CN108547162B - Ultrafiber impregnated color paste and preparation method thereof - Google Patents
Ultrafiber impregnated color paste and preparation method thereof Download PDFInfo
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- CN108547162B CN108547162B CN201810268933.7A CN201810268933A CN108547162B CN 108547162 B CN108547162 B CN 108547162B CN 201810268933 A CN201810268933 A CN 201810268933A CN 108547162 B CN108547162 B CN 108547162B
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- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000000049 pigment Substances 0.000 claims abstract description 133
- 239000002270 dispersing agent Substances 0.000 claims abstract description 63
- 239000011347 resin Substances 0.000 claims abstract description 63
- 229920005989 resin Polymers 0.000 claims abstract description 63
- 239000002904 solvent Substances 0.000 claims abstract description 50
- 229920001410 Microfiber Polymers 0.000 claims description 125
- 239000003658 microfiber Substances 0.000 claims description 125
- 238000005470 impregnation Methods 0.000 claims description 91
- 239000010985 leather Substances 0.000 claims description 62
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 42
- 238000004040 coloring Methods 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 20
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 19
- 229920000570 polyether Polymers 0.000 claims description 19
- 238000000227 grinding Methods 0.000 claims description 18
- 239000003086 colorant Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 13
- 239000003960 organic solvent Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 7
- MYONAGGJKCJOBT-UHFFFAOYSA-N benzimidazol-2-one Chemical compound C1=CC=CC2=NC(=O)N=C21 MYONAGGJKCJOBT-UHFFFAOYSA-N 0.000 abstract description 6
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 abstract description 5
- 239000006229 carbon black Substances 0.000 abstract description 5
- 239000001056 green pigment Substances 0.000 abstract description 5
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 abstract description 5
- VHMICKWLTGFITH-UHFFFAOYSA-N 2H-isoindole Chemical compound C1=CC=CC2=CNC=C21 VHMICKWLTGFITH-UHFFFAOYSA-N 0.000 abstract description 4
- 239000004408 titanium dioxide Substances 0.000 abstract description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 30
- 238000004043 dyeing Methods 0.000 description 22
- 238000012360 testing method Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000002649 leather substitute Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000013508 migration Methods 0.000 description 5
- 230000005012 migration Effects 0.000 description 5
- 238000007598 dipping method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 235000010215 titanium dioxide Nutrition 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 238000011020 pilot scale process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000012463 white pigment Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012860 organic pigment Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- BHAROVLESINHSM-UHFFFAOYSA-N toluene Chemical compound CC1=CC=CC=C1.CC1=CC=CC=C1 BHAROVLESINHSM-UHFFFAOYSA-N 0.000 description 2
- 241001261506 Undaria pinnatifida Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 125000003010 ionic group Chemical group 0.000 description 1
- GWVMLCQWXVFZCN-UHFFFAOYSA-N isoindoline Chemical compound C1=CC=C2CNCC2=C1 GWVMLCQWXVFZCN-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012803 optimization experiment Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000013341 scale-up Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Abstract
本发明公开了一超纤含浸色浆及其制备方法。该超纤含浸色浆包括一重量比为10％～20％的颜料，一重量比为5％～10％的分散剂，一重量比为15％～30％的树脂以及一重量比为45％～60％的溶剂。该颜料选自由钛白颜料、炭黑颜料、异吲哚类颜料、苯并咪唑酮类颜料、喹吖啶酮类颜料、DPP类颜料和酞青绿颜料所组成的耐溶剂性颜料组中的一种或多种。
The invention discloses a superfiber-impregnated color paste and a preparation method thereof. The superfiber impregnated color paste comprises a pigment with a weight ratio of 10% to 20%, a dispersant with a weight ratio of 5% to 10%, a resin with a weight ratio of 15% to 30%, and a weight ratio of 45% ~60% solvent. The pigment is selected from a solvent-resistant pigment group consisting of titanium dioxide pigments, carbon black pigments, isoindole pigments, benzimidazolone pigments, quinacridone pigments, DPP pigments and phthalocyanine green pigments one or more.
Description
Technical Field
The invention relates to the technical field of microfiber coloring, in particular to microfiber impregnation color paste and a preparation method thereof.
Background
The artificial leather production has been in industrial production for decades, and products thereof are continuously updated with the continuous application of various new materials. The superfine fiber synthetic leather (called superfine fiber leather for short) is developed on the basis of fully analyzing natural leather as one member of artificial leather. The microfiber leather has the advantages that the production process is different from that of common synthetic leather, peculiar smell is avoided in the production process, and the microfiber leather has excellent wear resistance, cold resistance, air permeability and aging resistance, so that the microfiber leather can almost perfectly replace high-grade leather materials. In addition, the microfiber leather is a good substitute for genuine leather, is regarded as a sunrise product of synthetic leather, has been widely used in high-end leather consumer industries such as furniture, clothing, ball making, shoe making, and automotive upholstery, and is expected to fully fill the blank market left by the withdrawal of natural leather.
Because the microfiber leather base cloth is usually white, the microfiber leather base cloth needs to be colored before the microfiber leather is finished to achieve a microfiber leather base cloth simulating effect. At present, the microfiber coloring treatment technology can be divided into dip-segment-containing pigment coloring and greige dye dyeing, but because the dip-segment-containing pigment coloring technology has the problems that the pigment is not resistant to toluene and the coloring brilliance is not high at present, the dye dyeing technology is usually adopted for products with high requirements on the coloring brilliance at present.
For the microfiber leather, the microfiber leather has the advantages of high dyeing speed and good migration property in the dye dyeing process due to the fact that the diameter of the microfiber in the microfiber leather is extremely small (usually, the fineness of the microfiber is only 0.0001-0.001 denier) and the specific surface area is large. However, this dye dyeing technique also has problems such as poor level-dyeing property, poor deep dyeing property, and low color fastness (such as soaping, rubbing, perspiration, light fastness). In addition, because the polyurethane molecules in the microfiber leather do not contain ionic groups, belong to hydrophobic substances and are not easy to swell in water, the microfiber leather has poor dye adsorption capacity in dyeing. Furthermore, because the acting force between the amorphous region molecular chains of the polyurethane molecules is weak, the dye absorbed in the microfiber leather is easy to migrate out, is not easy to dye deeply and has poor dyeing fastness. In addition, the process for dyeing the microfiber leather is relatively complex, has the problems of high energy consumption and pollution, and does not conform to the national sustainable development policy.
Disclosure of Invention
The invention aims to provide a microfiber impregnation color paste and a preparation method thereof, wherein the microfiber impregnation color paste can be used for pigment coloring treatment of an impregnation section of microfiber leather so as to improve the coloring brilliance of the microfiber leather.
The invention also aims to provide the microfiber impregnation color paste and the preparation method thereof, wherein the microfiber impregnation color paste has good storage stability.
The invention also aims to provide the microfiber impregnation color paste and the preparation method thereof, which can well disperse the pigment in the microfiber impregnation color paste and achieve good dispersibility and color development.
The invention also aims to provide the microfiber impregnation color paste and the preparation method thereof, wherein the microfiber impregnation color paste enables the coloring and the impregnation of microfiber leather to be carried out simultaneously, so that the processing time is greatly shortened, and the production cost is reduced.
The invention also aims to provide the microfiber impregnation color paste and the preparation method thereof, wherein the raw materials required for preparing the microfiber impregnation color paste are safe, non-toxic, green and environment-friendly, meet the international environmental protection index and meet the requirements of sustainable development of the current society.
The invention also aims to provide the microfiber impregnation color paste and the preparation method thereof, wherein the microfiber leather impregnated by the microfiber impregnation color paste can achieve uniform and bright color without a plurality of dyeing processes, so that the production cost is reduced, and the pollution to the environment is reduced.
The invention also aims to provide the microfiber impregnation color paste and the preparation method thereof, wherein the microfiber leather impregnated by the microfiber impregnation color paste has good dry rubbing color fastness, wet rubbing color fastness, migration resistance, heat resistance, light resistance, alkali resistance and toluene resistance, and solves the problem of coloring the conventional microfiber leather.
To achieve at least one of the above objects or other objects and advantages, the present invention provides a microfiber impregnation color paste, comprising:
10-20% of pigment by weight, wherein the pigment is selected from one or more of solvent-resistant pigment groups consisting of titanium white pigment, carbon black pigment, isoindole pigment, benzimidazolone pigment, quinacridone pigment, DPP pigment and phthalocyanine green pigment;
5 to 10 weight percent of dispersant;
15-30% of resin; and
45 to 60 percent of solvent.
In some embodiments of the present invention, the size of the microfiber impregnation color paste is less than 500 nm.
In some embodiments of the present invention, the color retention of the microfiber impregnation color paste after the TOL reduction is above 90%.
In some embodiments of the invention, the dispersant is a high molecular weight dispersant.
In some embodiments of the invention, the dispersant is a dispersant EFKA PX 4310.
In some embodiments of the invention, the resin is a high physical polyether resin.
In some embodiments of the invention, the resin is a polyether resin HF-4085.
In some embodiments of the invention, the solvent is dimethylformamide.
In some embodiments of the invention, the pigment is a pigment red p.r.177 SR 3C.
In some embodiments of the invention, the pigment is a pigment yellow p.r.180 HG 01.
In some embodiments of the present invention, the microfiber impregnation color paste is used for impregnation and coloring of microfiber leather.
According to another aspect of the present invention, the present invention further provides a method for preparing a microfiber impregnation color paste, comprising the following steps:
preparing a pigment, a dispersant, a resin and a solvent, wherein the pigment is selected from one or more of solvent-resistant pigment groups consisting of titanium white pigment, carbon black pigment, isoindole pigment, benzimidazolone pigment, quinacridone pigment, DPP pigment and phthalocyanine green pigment; (ii) a
Agitating the pigment, the dispersant, the resin, and the solvent to preliminarily wet the pigment; and
and grinding the pigment, the dispersing agent, the resin and the solvent to form the microfiber impregnation color paste.
In some embodiments of the present invention, the method for preparing a microfiber impregnation color paste further comprises the following steps:
and detecting the color paste particle size of the microfiber impregnation color paste to ensure that the color paste particle size of the microfiber impregnation color paste is below 500 nm.
In some embodiments of the present invention, in the step of grinding the pigment, the dispersant, the resin and the solvent to form the microfiber-impregnated paste, a nano grinder is used for grinding so that the particle size of the pigment is in the nano range.
In some embodiments of the present invention, the microfiber impregnation color paste contains 10 to 20 weight percent of the pigment; 5-10% by weight of the dispersant; 10-30% by weight of the resin; and 40-60% by weight of the solvent.
In some embodiments of the invention, the dispersant is a dispersant EFKA PX 4310.
In some embodiments of the invention, the resin is a polyether resin HF-4085.
In some embodiments of the invention, the solvent is dimethylformamide.
In some embodiments of the invention, the pigment is a pigment red p.r.177 SR 3C.
In some embodiments of the invention, the pigment is a pigment yellow p.r.180 HG 01.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.
Drawings
FIG. 1 is a schematic flow chart of a method for preparing a microfiber impregnation color paste according to a preferred embodiment of the present invention.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
In the present invention, the terms "a" and "an" in the claims and the description should be understood as meaning "one or more", that is, one element may be one in number in one embodiment, and the element may be more than one in number in another embodiment. The terms "a" and "an" should not be construed as limiting the number unless the number of such elements is explicitly recited as one in the present disclosure, but rather the terms "a" and "an" should not be construed as being limited to only one of the number.
At present, the prior art of microfiber coloring treatment generally includes pigment coloring with dipping segments and dyeing with gray cloth. Although the dyeing of the microfiber leather by the gray cloth dye dyeing technology can obtain high-quality color brilliance, the gray cloth dye dyeing technology still has many problems, such as poor level-dyeing property, poor deep dyeing property, poor dyeing fastness, complex dyeing process, high energy consumption and pollution, and does not meet the national policy of sustainable development, so that the impregnation section pigment dyeing technology becomes a better choice for dyeing the microfiber leather. However, the pigments used in the prior art cannot resist toluene and have low color brilliance, so the pigment coloring technology cannot be used in products with high requirements for color brilliance.
In order to solve the problems, the invention provides a microfiber impregnation color paste, which comprises 10-20% by weight of pigment, 5-10% by weight of dispersant, 15-30% by weight of resin and 45-60% by weight of solvent. When the coloring technology of the dipping segment-containing pigment is used for coloring the microfiber leather, the use of the microfiber dipping color paste enables the coloring of the microfiber leather and the dipping of the microfiber leather to be carried out synchronously, so that the processing time of the microfiber leather is greatly shortened, the production cost of the microfiber leather is reduced, and the problem of coloring the traditional microfiber leather is solved.
Preferably, the pigment is implemented as a high physical organic pigment, wherein the original structure of the pigment can reach the nanometer level, and the pigment has good physical properties, especially toluene resistance and alkali resistance. The pigment may be, for example, an organic pigment produced by clariant, oregon, basf, england, or an inorganic pigment produced by bayer, germany.
More specifically, the microfiber impregnation color paste is produced by adopting imported titanium dioxide pigment, carbon black pigment, isoindole pigment, benzimidazolone pigment, quinacridone pigment, DPP pigment, phthalocyanine green pigment and other solvent-resistant pigments, a dispersant, resin, a solvent and other raw materials through a series of special dispersion processes, so that the microfiber impregnation color paste has good storage stability.
In addition, the retention rate of the color of the microfiber impregnation color paste can reach more than 90% after TOL (toluene) is reduced, and uniform and bright color can be achieved without carrying out a plurality of dyeing processes, so that the production cost of the microfiber impregnation color paste is reduced, and the pollution to the environment is reduced.
It should be understood that the microfiber-impregnated color paste can also be used for coloring the microfiber leather at the same time when the microfiber-impregnated color paste is used for impregnating the microfiber leather. That is to say, the microfiber impregnation color paste enables coloring and impregnation of microfiber leather to be carried out simultaneously, so that the processing time is greatly shortened, and the production cost of the microfiber leather is reduced.
Further, the dispersant is implemented as a high molecular weight dispersant, wherein the dispersant can well wet and disperse the pigment so as to achieve good dispersibility and color rendering property, and can stabilize the storage of the microfiber impregnation color paste. The high molecular weight dispersant may be, for example, a dispersant such as those produced by EFKA of the netherlands or byke of germany.
Preferably, the dispersant is a dispersant EFKA PX4310 (model number of the dispersant is EFKA PX 4310).
The resin is preferably embodied as a high-physical-property polyether resin. For example, the high-physical property polyether resin may be a resin produced by wakame corporation.
Preferably, the resin is a polyether resin HF-4085 (the polyether resin is of the type HF-4085).
Further, the solvent may be embodied as various organic solvents capable of dissolving the pigment. For example, the solvent may be an organic solvent produced by chemical engineering in Jiangshan.
Preferably, the solvent is embodied as a dimethylformamide.
It should be understood that the pigment and the resin meet environmental requirements of the european union and elsewhere for pipe-limiting materials. In addition, the raw materials used in the invention are all safe, nontoxic, green and environment-friendly, meet the international environmental protection index, and are the choices for sustainable development of the current society.
As shown in fig. 1, the preferred embodiment of the present invention further provides a method for preparing the microfiber impregnation color paste, which comprises the following steps:
(a) preparing a pigment, a dispersing agent, a resin and a solvent;
(b) agitating the pigment, the dispersant, the resin, and the solvent to preliminarily wet the pigment; and
(c) and grinding the pigment, the dispersing agent, the resin and the solvent to form the microfiber impregnation color paste.
Further, the preparation method of the microfiber impregnation color paste further comprises the following steps:
(d) detecting the color paste particle size of the microfiber impregnation color paste to ensure that the color paste particle size of the microfiber impregnation color paste is below 500 nm.
More specifically, the pigment, the dispersant, the resin, and the solvent are prepared, and the pigment, the dispersant, the resin, and the solvent are put into a stirring tank; then, stirring the pigment, the dispersant, the resin and the solvent in the stirring tank by a disperser to preliminarily wet the pigment; then, grinding the pigment, the dispersing agent, the resin and the solvent by a nano grinder until the microfiber impregnation color paste is formed in the stirring kettle, so that the color paste granularity of the microfiber impregnation color paste reaches a preset requirement.
Preferably, the preset requirement of the color paste granularity is below 500nm so as to meet the relevant specified requirement.
Further, in order to ensure that the color paste particle size of the prepared microfiber impregnation color paste meets the requirement, after the grinding step, a laser particle size distribution instrument is required to detect the color paste particle size of the microfiber impregnation color paste so as to judge whether the microfiber impregnation color paste is qualified. If the granularity of the color paste of the microfiber impregnation color paste is below 500nm, the preparation process of the microfiber impregnation color paste is completed; if the granularity of the color paste of the microfiber impregnation color paste is larger than 500nm, the grinding step and the detecting step are repeatedly executed until the granularity of the color paste of the microfiber impregnation color paste is below 500 nm.
It is noted that the pigment is preferably embodied as a solvent-resistant pigment such as an imported titanium white pigment, a carbon black pigment, an isoindoline-based pigment, a benzimidazolone-based pigment, a quinacridone-based pigment, a DPP-based pigment, a phthalocyanine green pigment, and the like.
Illustratively, the pigment is a pigment red p.r.177 SR3C, wherein the pigment red p.r.177 SR3C is the DPP-based pigment; or the pigment is a pigment yellow p.r.180 HG01, wherein the pigment yellow p.r.180 HG01 is the benzimidazolone pigment.
The dispersant is preferably embodied as a high molecular weight dispersant. Illustratively, the dispersant is dispersant EFKA PX 4310.
The resin is preferably embodied as a high-physical-property polyether resin. For example, the resin is a polyether resin HF-4085.
The solvent is preferably embodied as a dimethylformamide. It should be understood that the raw materials required for preparing the microfiber impregnation color paste are safe, non-toxic, green and environment-friendly, meet the international environmental protection index and meet the requirements of the sustainable development of the current society.
In order to prepare the qualified microfiber impregnation color paste, the whole production route is designed in detail through a small test, and the method comprises the following steps: the pigment, the dispersant, the resin and the solvent are put into a 2kg stirring tank; stirring for 30min by using a dispersion machine at the rotating speed of 2000 r/min; adding the stirred pigment, the dispersant, the resin and the solvent into a nano-grinder, and grinding for 8-12h by using the nano-grinder to form the microfiber impregnation color paste; and finally, testing the grain diameter of the color paste of the microfiber impregnation color paste by using a laser grain size distribution instrument, wherein the grain diameter of the color paste is required to be below 500 nm.
Then, determining the process formula of the microfiber impregnation color paste through multiple orthogonal optimization experiments, namely when preparing the microfiber impregnation color paste by adopting the process proportion of 10-20% by weight of the pigment, 5-10% by weight of the dispersant, 15-30% by weight of the resin and 45-60% by weight of the solvent, the pigment in the microfiber impregnation color paste can be well dispersed so as to achieve good dispersibility and color spreading property, and meanwhile, the microfiber impregnation color paste also has good storage stability.
It is worth noting that in the whole process of preparing the microfiber impregnation color paste, the grinding process is a key step in the preparation method of the microfiber impregnation color paste, so that the key grinding equipment device is designed, and a process regulation and control optimization control scheme corresponding to a production device is established, so that the grinding efficiency is greatly improved, and the preparation efficiency of the microfiber impregnation color paste is effectively improved.
In order to adapt to large-batch industrial production, the invention also performs a pilot scale test on the preparation of the microfiber impregnation color paste so as to verify the feasibility and the accuracy of a pilot scale process and obtain industrial utilization value. The procedure of this pilot scale-up test is specifically as follows: charging the pigment, the dispersant, the resin and the solvent into an 80kg stirring tank; stirring for 30min by using a dispersion machine at the rotating speed of 2000 r/min; adding the stirred pigment, the dispersant, the resin and the solvent into a nano-grinder, and grinding for 8-12h by using the nano-grinder to form the microfiber impregnation color paste; and finally, testing the grain diameter of the color paste of the microfiber impregnation color paste by using a laser grain size distribution instrument, wherein the grain diameter of the color paste is required to be below 500 nm.
It is worth noting that through a plurality of pilot scale tests, the preliminary design of the process flow for industrially producing the microfiber impregnation color paste in large scale is provided, the device of the grinding equipment is designed, and quantitative automatic circulation feeding is adopted, so that the dispersion precision of the microfiber impregnation color paste is improved, and the grinding efficiency is greatly improved.
It should be understood that in the present invention, the microfiber impregnation color paste of different colors can be prepared by using pigments of different colors. For example, when pigment RED P.R.177 SR3C is selected as the pigment, the prepared microfiber impregnation color paste is bright RED paste PW 3177 RED; when pigment YELLOW P.R.180 HG01 is selected as the pigment, the prepared microfiber impregnation color paste is YELLOW color paste PW 1180 YELLOW.
Example 1: preparation of bright RED color paste PW 3177 RED
1. The selected feed ratios are shown in table 1 below:
table 1: feed proportioning
| Item of material | Weight ratio (%) |
| Pigment Red P.R.177 SR3C | 10 |
| Polyether resin HF-4085 | 25 |
| Dimethyl formamide | 56.5 |
| Dispersant EFKA PX4310 | 8.5 |
2. The preparation process of the bright RED color paste PW 3177 RED comprises the following steps: according to the charging proportion in the table 1, the pigment red p.r.177 SR3C, the polyether resin HF-4085, the dimethylformamide and the dispersant EFKA PX4310 are charged into a 2kg stirring kettle; then, stirring for 30min by using a dispersion machine under the operation state of the rotating speed of 2000 r/min; then, adding the stirred pigment red P.R.177 SR3C, the polyether resin HF-4085, the dimethylformamide and the dispersing agent EFKA PX4310 into a nano grinder to grind for 8-12h to prepare the scarlet color paste; and finally, testing the particle size of the bright red paste by using a laser particle size distribution instrument, wherein the particle size of the bright red paste is required to be below 500 nm.
3. The detection results of the prepared bright red paste are shown in the following table 2:
table 2: color paste test results
4. The scarlet color paste PW 3177 RED prepared in the example 1 is used to perform impregnation and coloring treatment on a microfiber leather, and tests related items are performed on an impregnated microfiber leather sample, and the obtained test results are shown in table 3 below:
table 3: test results of impregnated microfiber leather sample
| Serial number | Name of item | Index (I) | Actual measurement result |
| 1 | Color fastness to dry rubbing | 4-5 stages | 4.5 |
| 2 | Color fastness to wet rubbing | 4-5 stages | 4 |
| 3 | Migration resistance | 4-5 stages | 4.5 |
| 4 | Heat resistance | 4-5 stages | 4.5 |
| 5 | Light resistance | 4-5 stages | 4.5 |
| 6 | Alkali resistance | 4-5 stages | 5 |
| 7 | Resistance to toluene | Toluene liquid does not fade | Toluene liquid does not fade |
Example 2: preparation of YELLOW color paste PW 1180 YELLOW
1. The selected feed ratios are shown in table 4 below:
table 4: feed proportioning
| Item of material | Weight ratio (%) |
| Pigment yellow P.R.180 HG01 | 15 |
| Polyether resin HF-4085 | 27 |
| Dimethyl formamide | 48.5 |
| Dispersant EFKA PX4310 | 9.5 |
2. The preparation process of the YELLOW color paste PW 1180 YELLOW comprises the following steps: according to the charging ratio in the table 1, the pigment yellow p.r.180 HG01, the polyether resin HF-4085, the dimethylformamide and the dispersant EFKA PX4310 were charged into a 2kg stirred tank; then, stirring for 30min by using a dispersion machine under the operation state of the rotating speed of 2000 r/min; then, adding the stirred pigment yellow P.R.180 HG01, the polyether resin HF-4085, the dimethylformamide and the dispersing agent EFKA PX4310 into a nano grinding machine for grinding for 8-12h to prepare yellow color paste; and finally, testing the particle size of the yellow color paste by using a laser particle size distribution instrument, wherein the particle size of the yellow color paste is required to be below 500 nm.
3. The detection result of the prepared YELLOW color paste PW 1180 YELLOW is shown in the following table 5:
table 5: color paste test results
| Serial number | Name of item | Index (I) | Actual measurement result |
| 1 | Particle size (nm) | ≤500 | 350 |
| 2 | Pigment content (%) | 10-20 | 15 |
| 3 | Viscosity (cps/25 ℃ C.) | 50-3000 | 1800 |
4. The YELLOW paste PW 1180 YELLOW ow prepared in example 2 is used to perform impregnation and coloring treatment on microfiber leather, and tests related items are performed on an impregnated microfiber leather sample, and the obtained test results are shown in table 6 below:
table 6: test results of impregnated microfiber leather sample
| Serial number | Name of item | Index (I) | Actual measurement result |
| 1 | Color fastness to dry rubbing | 4-5 stages | 4.5 |
| 2 | Color fastness to wet rubbing | 4-5 stages | 4 |
| 3 | Migration resistance | 4-5 stages | 4.5 |
| 4 | Heat resistance | 4-5 stages | 4.5 |
| 5 | Light resistance | 4-5 stages | 4.5 |
| 6 | Alkali resistance | 4-5 stages | 5 |
| 7 | Resistance to toluene | Toluene liquid does not fade | Toluene liquid does not fade |
In summary, the particle size, pigment content and viscosity of the microfiber impregnation color paste prepared according to the above examples 1 and 2 of the present invention all satisfy the required indexes. Meanwhile, the microfiber leather impregnated by the microfiber impregnation color paste has dry color fastness, wet color fastness, migration resistance, heat resistance, light resistance, alkali resistance and toluene resistance which meet corresponding indexes, and the problem of coloring of the conventional microfiber leather is solved.
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.
Claims (16)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094737A (en) * | 1994-04-16 | 1994-11-09 | 钱澄 | Wet-type colour polyurethane paste and method for making thereof |
| CN103410009A (en) * | 2013-04-19 | 2013-11-27 | 晋江市闽高纺织科技有限公司 | High-breathability superfine fiber polyurethane suede synthetic leather, preparation technology and products prepared from synthetic leather |
| CN105803816A (en) * | 2016-05-25 | 2016-07-27 | 山东同大海岛新材料股份有限公司 | Preparation method of easy-dyeing microfiber leather |
| CN106283704A (en) * | 2016-08-19 | 2017-01-04 | 安徽安利材料科技股份有限公司 | The preparation method of colourless migration playshoes suede Synthetic Leather |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1094737A (en) * | 1994-04-16 | 1994-11-09 | 钱澄 | Wet-type colour polyurethane paste and method for making thereof |
| CN103410009A (en) * | 2013-04-19 | 2013-11-27 | 晋江市闽高纺织科技有限公司 | High-breathability superfine fiber polyurethane suede synthetic leather, preparation technology and products prepared from synthetic leather |
| CN105803816A (en) * | 2016-05-25 | 2016-07-27 | 山东同大海岛新材料股份有限公司 | Preparation method of easy-dyeing microfiber leather |
| CN106283704A (en) * | 2016-08-19 | 2017-01-04 | 安徽安利材料科技股份有限公司 | The preparation method of colourless migration playshoes suede Synthetic Leather |
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