JP2001081236A - Granular nucleating agent composition and polyolefin resin composition comprising the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition allowing excellent dispersion of a nucleating agent in a polyolefin resin thereby improving rigidity of a resultant resin by admixing in a specific ratio a nucleating agent, a metal soap and a binder comprising an organic compound having a lower melting point than the metal soap in a high-speed solid mixer equipped with a rotating blade thereby softening the binder resulting in granulation of the admixture. SOLUTION: A nucleating agent (A) is selected from metal salts of an organic phosphate ester of formula I (wherein R1 and R2 are each H or a 1-9C alkyl; and M is an alkali metal) or of formula II (wherein R3 and R4 are each H or a 1-9C alkyl; A is a 1=5C alkylidene; and M is an alkali metal) and metal salts of aromatic carboxylic acids of formula III (wherein R5 is H, a 1-9C alkyl or a 1-9C alkoxyl; M is an alkali metal or Al; and (n) is a valence number). As a metal soap (B), is employed an alkali metal salt of an 8-22C fatty acid, or the like. As a binder (C) is employed an organic compound having a melting point of 200 deg.C or below. The components A, B and C are compounded in an amount of 100 pts.wt., 10-100 pts.wt. and at least 10 pts.wt., respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a granular nucleating agent composition capable of uniformly dispersing a nucleating agent in a polyolefin resin, and a polyolefin resin obtained by blending such a granular nucleating agent composition. Composition.

[0002]

2. Description of the Related Art Polyolefin resins such as polyethylene, polypropylene and polybutene have a low crystallization rate after heat molding. Therefore, nucleation of the resin during molding is carried out for the purpose of improving the molding cycle and improving the rigidity of the molded product. Formulating agents is already well known.

Conventionally, as a nucleating agent, for example, alkali metal salts of phosphites and metal salts of aromatic carboxylic acids have been known. Such a nucleating agent is usually a powder, and in particular, when blended with a polyolefin resin, is required to be a fine powder so as to have excellent dispersibility.

[0004] However, if the nucleating agent is fine powder,
Secondary agglomeration is likely to occur, and on the contrary, the dispersibility is inferior. In addition, dust is generated at the time of work, which deteriorates the working environment and may cause a dust explosion. In addition, there is a problem that coagulation and blocking occur during storage and bridging occurs during transfer, which adversely affects productivity.

[0005] Therefore, it has already been proposed to add additives such as a stabilizer and a lubricant to the nucleating agent, produce pellets having a high concentration of the nucleating agent, and blend the pellets with the resin. However, although the nucleating agent composition formed into pellets in this way is effective for dust control, the dispersibility is still inferior, and the pellets require a long process for producing the It also causes up.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems in the conventional granulation of a nucleating agent, and it is an object of the present invention to improve the dispersibility of a nucleating agent in a polyolefin resin. It is an object of the present invention to provide a granular nucleating agent composition capable of improving the rigidity of the obtained polyolefin resin and a polyolefin resin composition obtained by blending the composition.

[0007]

According to the present invention, a binder 10 composed of an organic compound having a melting point lower than that of metal soap is 10 to 100 parts by weight based on 100 parts by weight of a nucleating agent. A granular nucleating agent composition comprising at least one part by weight is provided.

In particular, according to the present invention, based on 100 parts by weight of the nucleating agent, 10 to 100 parts by weight of metallic soap and 10 parts by weight or more of a binder made of an organic compound having a melting point lower than that of metallic soap. Is mixed with a high-speed solid mixer equipped with rotating blades, and the binder is softened to obtain a granular nucleating agent composition.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The nucleating agent used in the present invention is:
Including talc, any one may be used as long as it has been generally used as a nucleating agent in a polyolefin resin. Preferably, at least one selected from organic phosphoric acid ester metal salts and aromatic carboxylic acid metal salts is used. Is a seed.

The organophosphate metal salt used in the present invention is preferably a compound represented by the following general formula (I):

[0011]

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(Wherein, R ₁ and R ₂ each represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms, and M represents an alkali metal) or the general formula (II)

[0013]

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(Wherein, R ₃ and R ₄ each represent a hydrogen atom or an alkyl group having 1 to 9 carbon atoms, and A represents 1 to 9 carbon atoms)
5 represents an alkylidene group, and M represents an alkali metal. ).

In the organophosphate metal salts represented by the general formulas (I) and (II), the alkali metal M
Is preferably lithium, potassium or sodium, and particularly preferably sodium.

In addition, in the organic phosphoric acid ester metal salt represented by the above general formula (I) or (II), R ₁ ,
Specific examples of the alkyl group represented by R ₂ , R ₃ or R ₄ include, for example, methyl, ethyl, propyl, isopropyl, s-butyl, t-butyl, isobutyl, amyl,
Examples thereof include t-amyl, hexyl, heptyl, octyl, isooctyl, t-octyl, 2-ethylhexyl, and nonyl. Examples of the alkylidene group represented by A include a methylene group, an ethylidene group, a propylidene group and a butylidene group.

Accordingly, preferred specific examples of the organic phosphoric acid ester metal salt represented by the above general formula (I) include, for example, sodium bis (4-t-butylphenyl) phosphate and sodium bis (4-t-amylphenyl) Phosphate, sodium bis (4-t-octylphenyl) phosphate, sodium bis (2,4-di-t-butylphenyl) phosphate, lithium bis (2,4-di-t-butylphenyl) phosphate and the like can be mentioned. it can.

Preferred examples of the organophosphate metal salt represented by the general formula (II) include, for example, sodium-2,2'-methylenebis (4-methyl-6
-T-butylphenyl) phosphate, sodium-2,
2'-methylenebis (4,6-di-t-butylphenyl) phosphate, lithium-2,2'-methylenebis (4,6-di-t-butylphenyl) phosphate, sodium-2,
2'-ethylidenebis (4,6-di-t-butylphenyl)
Phosphate, lithium-2,2'-ethylidenebis (4.6
-Di-t-butylphenyl) phosphate and the like.

According to the present invention, the organophosphate metal salt represented by the general formula (I) or (II) is used alone or as a mixture of two or more. The aromatic carboxylic acid metal salt used in the present invention is preferably
General formula (III)

[0020]

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(Wherein R ₅ represents a hydrogen atom, an alkyl group having 1 to 9 carbon atoms or an alkoxyl group having 1 to 9 carbon atoms,
M represents an alkali metal or aluminum, and n represents a metal M
Shows the valence of ) (Substituted) metal benzoate.

In the (substituted) metal benzoate represented by the general formula (III), the alkali metal M is lithium,
It is preferably potassium or sodium, especially
Preferably it is sodium.

Specific examples of the alkyl group represented by R ₅ include, for example, methyl, ethyl, propyl, isopropyl, s-butyl, t-butyl, isobutyl, amyl, t-amyl, hexyl, heptyl, octyl, Examples thereof include isooctyl, t-octyl, 2-ethylhexyl, and nonyl. Similarly, specific examples of the alkoxyl group represented by R ₅ include, for example, an alkoxyl group corresponding to the above-described alkyl group.

According to the present invention, the metal salt of (substituted) benzoic acid is preferably a sodium salt or an aluminum salt, particularly preferably a sodium salt or aluminum salt of (substituted) benzoic acid.

Accordingly, preferred specific examples of the above-mentioned (substituted) sodium or aluminum benzoate include, for example, sodium and aluminum salts such as benzoic acid, pt-butylbenzoic acid and p-methoxybenzoic acid. Can be.

According to the present invention, such a nucleating agent 100
10 to 100 parts by weight of metal soap is used in combination with parts by weight. Metal soap is useful for improving the dispersibility of a nucleating agent in a polyolefin resin. Nucleating agent 1
When the ratio of the metal soap is less than 10 parts by weight, the dispersibility of the nucleating agent in the polyolefin resin is not sufficient, and the polyolefin resin composition having excellent rigidity is extended. I can't get it. On the other hand, if the metal soap exceeds 100 parts by weight with respect to 100 parts by weight of the nucleating agent, the dispersibility of the nucleating agent is not further enhanced.

In the present invention, the metal soap is preferably a fatty acid having 8 to 22 carbon atoms, such as an alkali metal salt such as lithium, potassium or sodium, or an alkaline earth metal salt such as calcium or magnesium. Salts and zinc salts. The fatty acid may be a saturated fatty acid or an unsaturated fatty acid, may be linear or branched, and may have a hydroxyl group or a carbonyl group in the molecule. Although the melting point is not particularly limited, it is usually in the range of 100 to 250 ° C. so that it is easily mixed and granulated in a high-speed solid mixer equipped with a rotating blade according to the present invention. Some are preferred.

Accordingly, specific examples of such metal soaps include, for example, 2-ethylhexanoic acid, lauric acid, palmitic acid, stearic acid, behenic acid, oleic acid,
The above metal salts such as linoleic acid, ricinoleic acid and 12-hydroxystearic acid can be mentioned. Of these, stearic acid is particularly preferred. The metal salt is particularly preferably a calcium salt or a magnesium salt.

The granular nucleating agent composition according to the present invention is preferably prepared by adding 100 parts by weight of the nucleating agent to the metal soap 10-1.
By mixing 00 parts by weight and 10 parts by weight or more of a binder made of an organic compound having a melting point lower than that of the metal soap in a high-speed solid mixer equipped with rotating blades, the binder is softened. And a composition obtained by granulating these nucleating agent, metallic soap and binder into granules.

In the present invention, since the binder is used to collectively granulate the nucleating agent and the metal soap, the binder is lower than the melting point of the metal soap used. Various organic compounds can be used without particular limitation as long as they have a melting point. However, usually, the binder has a melting point of 200 ° C. or less, preferably about 50 to 150 ° C. Those having a melting point are preferred.

Accordingly, examples of such a binder include higher fatty acids, higher alcohols, polypropylene glycol, fatty acid alkyl esters, polycarboxylic acids which may have a hydroxyl group and esters thereof, polyhydric alcohol fatty acid esters, and the like. Examples include polyoxyethylene higher alkyl ether, polyoxyethylene alkyl phenyl ether, aliphatic hydrocarbon, oil and fat, higher fatty acid amide, rosin and derivatives thereof.

As the above-mentioned higher fatty acid, for example, a saturated or unsaturated fatty acid having 14 to 40 carbon atoms, preferably 16 to 24 carbon atoms is preferable. Specific examples thereof include stearic acid, isostearic acid, behenic acid, and dimer. Acids and the like can be mentioned.

As the higher alcohol, for example, a linear or branched saturated or unsaturated aliphatic alcohol having 8 to 40 carbon atoms, preferably 16 to 24 carbon atoms is preferable. As a specific example, for example, stearyl alcohol , Behenyl alcohol, 2-ethylhexyl alcohol, 2-octyldodecanol, 2-decyltetradecanol and the like.

Polypropylene glycol has a molecular weight of 40
Those having about 0 to 7000 are preferably used.

Examples of the fatty acid alkyl ester include a saturated or unsaturated fatty acid having 8 to 22 carbon atoms, preferably 14 to 18 carbon atoms, and a linear or branched saturated aliphatic alcohol having 4 to 22 carbon atoms. Are preferred, and specific examples include, for example, butyl stearate, octyl stearate and the like.

Examples of the polyvalent carboxylic acid which may have a hydroxyl group and esters thereof include, for example, a polyvalent carboxylic acid having about 2 to 18 carbon atoms which may have a hydroxyl group such as di-, tri- or tetracarboxylic acid. Esters of acids with saturated or unsaturated aliphatic alcohols having 2 to 22 carbon atoms, especially
Di- or triesters are preferred. Specific examples of the polyvalent carboxylic acid which may have a hydroxyl group include, for example, succinic acid, citric acid, malic acid, acetyl citric acid, adipic acid, sebacic acid, hexahydrophthalic acid, butanetetracarboxylic acid and the like. Can be mentioned. On the other hand, examples of the saturated or unsaturated aliphatic alcohol having 2 to 22 carbon atoms include butanol, 2-ethylhexyl alcohol, isononyl alcohol, lauryl alcohol, stearyl alcohol, oleyl alcohol, cetyl alcohol, behenyl alcohol, and n-octyl. Alcohol and the like can be mentioned.

Accordingly, specific examples of such esters of polycarboxylic acids which may have a hydroxyl group include, for example, monostearyl malate, mono-, di- or tristearyl citrate, tributyl acetyl citrate,
Examples thereof include 2-ethylhexyl adipate, n-octyl adipate, diisononyl adipate, lauryl adipate and the like.

The polyhydric alcohol fatty acid ester may be a whole ester or a partial ester, and is preferably an ester of a di- to hexa-valent polyhydric alcohol and a fatty acid having 8 to 22 carbon atoms. In particular, mono-, di- or triesters of glycerin and the above fatty acids, and acetylated products thereof, sorbitan, ethylene glycol, propylene glycol,
Sucrose, pentaerythritol, trimethylolpropane, polyglycerin, polyoxyethylene glycerin,
Polyoxyethylene sorbitan, polyethylene glycol, polypropylene glycol, etc. and the above carbon number of 8 to 22
Esters with fatty acids are preferred. Of these,
Particularly, pentaerythritol stearate, trimethylolpropane laurate, diglycerin stearate and the like are preferably used.

As the polyoxyethylene higher alkyl ether, for example, those obtained by adding about 1 to 20 mol of ethylene oxide to a higher alcohol having about 12 to 22 carbon atoms are preferable. Examples of the polyoxyethylene alkyl phenyl ether include phenol having an alkyl group having about 1 to 18 carbon atoms and ethylene oxide 1
What adds about 20 mol is preferable.

Examples of the aliphatic hydrocarbon include liquid paraffin, synthetic paraffin, cumarone resin, indene resin, white mineral oil, petroleum resin, hydrogenated petroleum resin, petroleum wax,
Examples include microcrystalline wax, montan wax, polyethylene wax, polypropylene wax, and odorless light hydrocarbons. In particular, in the present invention, among these, a polyolefin wax such as a polyethylene wax having a number average molecular weight of about 400 to 8000 and a polypropylene wax having a number average molecular weight of about 200 to 9000, a hydrogenated petroleum resin and the like are preferably used.

Examples of fats and oils include hydrogenated edible fats and oils, hydrogenated castor oil, hydrogenated macaque oil, bran wax and the like.

Examples of the higher fatty acid amide include fatty acid amides having 8 to 22 carbon atoms and ethylenebisfatty acid amide. A typical example of the rosin derivative is a rosin ester.

In particular, according to the present invention, among the various binders mentioned above, stearic acid, behenic acid, dimer acid, stearyl alcohol, behenyl alcohol, 2-phenyl
Hexyldecanol, 2-octyldodecanol, 2-
Decyltetradecanol, butyl stearate, octyl stearate, citric acid, malic acid, succinic acid, adipic acid, butanetetracarboxylic acid, mono-, di- or tristearyl citrate, monostearyl malate, tributyl acetyl citrate , 2-ethylhexyl adipate, octyl adipate, diisononyl adipate, lauryl adipate, bran wax, pentaerythritol stearate, trilaurate, diglycerin stearate, polyethylene wax, polypropylene wax, hydrogenated petroleum resin,
Monoglycerides such as glycerin monostearate and glycerin monolaurate, erucamide, stearamide, oleic amide and the like are preferably used.

In the present invention, the binder is used in an amount of 10 parts by weight or more, preferably 15 parts by weight or more with respect to 100 parts by weight of the nucleating agent, so that the rotating blades together with the nucleating agent and the metal soap are used. By mixing with a high-speed solid mixer equipped with, it can be granulated simultaneously into granules. However, for 100 parts by weight of the nucleating agent, 1
When the amount is less than 0 parts by weight, it is difficult to granulate the nucleating agent and the metallic soap into granules. On the other hand, if the binder is used in an amount of more than 100 parts by weight, no further effect on granulation is observed and it is uneconomical. Therefore, in the present invention, the binder is usually 10 to 10 parts by weight based on 100 parts by weight of the nucleating agent.
0 parts by weight, preferably 15 to 80 parts by weight.

According to the present invention, the nucleating agent, the metallic soap and the binder can be simultaneously granulated by mixing them with a high-speed solid mixer equipped with rotating blades.
As such a high-speed solid mixer, for example, a Henschel mixer is preferably used. The number of rotations of the rotating blades depends on the particle size of the target granules, but is usually 500 to
The range may be 3000 rpm, preferably 10 rpm.
The range is from 00 to 2500 rpm. Usually 500 rp
It is preferred to premix at a rotation speed less than m.

In the present invention, the average particle size of the granular nucleating agent composition is usually in the range of 50 μm to 2 mm,
Preferably, the nucleating agent is in the range of 150 μm to 1 mm, and the granular nucleating agent composition having such an average particle size is blended with a polyolefin resin and melt-kneaded using, for example, an extruder. Can be uniformly dispersed as compared with the case where the powder of (1) is blended with the polyolefin resin and melt-kneaded and dispersed, and thus the obtained polyolefin resin composition has excellent strength.

In the present invention, the polyolefin resin includes α, such as ethylene, propylene, butene, pentene, hexene, 4-methylpentene, heptene and octene.
-Olefin homopolymers and copolymers, and copolymers thereof with other monomers having an α-olefin unit content of 50% by weight or more, for example, vinyl esters such as vinyl acetate, acrylic acid, methacrylic acid And copolymers with a derivative such as an unsaturated acid having a polymerizable double bond such as maleic anhydride or its ester or amide.

Specifically, for example, low, medium or high density polyethylene, polypropylene, polybutene-1, ethylene-propylene random copolymer, ethylene-propylene block copolymer, ethylene-propylene-butene copolymer, ethylene -Butene copolymer, ethylene-4-
Examples thereof include a methylpentene copolymer, a propylene-hexene copolymer, and a propylene-hexene-butene copolymer.

The polyolefin resin composition of the present invention is prepared by adding the above granular nucleating agent composition to 100 parts by weight of the above-mentioned polyolefin resin in an amount of 0.005 to 5 in terms of nucleating agent.
Such a resin composition is obtained by blending the granular nucleating agent composition with a polyolefin resin and, for example, melt-kneading using an extruder. Can be. Polyolefin resin 10
When the mixing ratio of the granular nucleating agent composition is less than 0.005 parts by weight in terms of nucleating agent with respect to 0 parts by weight, the effect of the nucleating agent is insufficient. In the resin composition, improvement in rigidity cannot be obtained. On the other hand, based on 100 parts by weight of polyolefin resin,
Even if the compounding ratio of the granular nucleating agent composition exceeds 5 parts by weight in terms of the nucleating agent, further improvement in rigidity cannot be obtained in the obtained polyolefin resin composition,
It is also uneconomical.

The polyolefin resin composition according to the present invention may further comprise, if necessary, an antioxidant,
An ultraviolet absorber, an antistatic agent, a pigment, a filler, a flame retardant, a lubricant, a processing aid, and the like may be appropriately blended.

[0051]

EXAMPLES The present invention will be described below with reference to examples.
The present invention is not limited by these examples.

Example 1 (Production of granular nucleating agent composition)
20 parts by weight of calcium stearate and 15 parts by weight of monoglyceride stearate are mixed with 100 parts by weight of aluminum t-butyl benzoate, and the mixture is charged into a Henschel mixer, pre-mixed at a rotation speed of the rotating blades of 500 rpm, and then premixed. At a rotation speed of 1800 rpm, and the mixture was granulated into granules having an average particle diameter of 350 μm while stirring and mixing.

(Preparation of Polypropylene Resin Composition) The granular nucleating agent composition was prepared by mixing polypropylene (ethylene-propylene block copolymer,
The melt was kneaded using a single-screw extruder (cylinder temperature: 200 ° C.) and extruded into pellets at a temperature of 230 ° C. under a load of 2.16 kgf (melt flow rate: 8 g / 10 minutes).

(Evaluation of Dispersibility of Nucleating Agent in Polypropylene Resin Composition) Next, it was visually observed whether or not white foreign matter was attached to an 80-mesh screen in front of a breaker plate of an extruder. The dispersibility of the nucleating agent was evaluated. When there was no foreign matter or the foreign matter was slightly observed, ○ was shown when the foreign matter was observed, and × when the foreign matter was adhered to the entire surface of the screen. Table 1 shows the results.

(Measurement of Tensile Strength of Polypropylene Resin Composition) The above pellet was injected into an injection molding machine (cylinder temperature 250
C., a mold temperature of 50 ° C.) was used to form a tensile test piece (JIS No. 2 type), and the tensile strength was measured according to JIS K7113. Further, in the same manner as above, the same tensile test piece was formed, and the parallel portion was used to form a JIS K71.
According to No. 16, the flexural modulus was measured. The measurement was performed five times for each case, and the average value of the three points excluding the maximum and minimum values of the tensile strength and the flexural modulus was shown. Table 1 shows the results.

Examples 2 to 16 As shown in Tables 1 and 2, a metal nucleating agent was mixed with metallic soap and a binder.
Granulated into 500 μm granules. Using each of the granular nucleating agent compositions thus prepared, the polypropylene resin composition was extruded into pellets in the same manner as in Example 1, and the dispersibility of the nucleating agent in the resin composition was evaluated. Further, in the same manner as in Example 1, the pellet was formed into a tensile test piece (JIS No. 2 type), and the tensile strength and the flexural modulus were measured. The results are shown in Tables 1 and 2.

Comparative Examples 1 and 2 As shown in Table 2, a metal nucleating agent was mixed with metallic soap and a binder, and granulated into a granule having an average particle diameter of 250 μm in the same manner as in Example 1. Using each of the granular nucleating agent compositions thus prepared, the polypropylene resin composition was extruded into pellets in the same manner as in Example 1, and the dispersibility of the nucleating agent in the resin composition was evaluated. Further, in the same manner as in Example 1, the pellet was subjected to a tensile test piece (JIS
(No. 2 shape), and the tensile strength and the flexural modulus were measured. Table 2 shows the results.

COMPARATIVE EXAMPLE 3 100 parts by weight of aluminum pt-butyl benzoate and 60 parts by weight of calcium stearate were each used in the form of powder, and 1000 parts by weight of aluminum pt-butyl benzoate was used.
pm, polypropylene (ethylene-propylene block copolymer, temperature 230 ° C, load 2.16 kgf
Melt flow rate of 8 g / 10 min), melt-kneaded using a single screw extruder (cylinder temperature 200 ° C.), extruded into pellets, and evaluated the dispersibility of the nucleating agent in the resin composition. Further, in the same manner as in Example 1, the pellet was formed into a tensile test piece (JIS No. 2), and the tensile strength and the flexural modulus were measured. Table 2 shows the results.

[0059]

[Table 1]

[0060]

[Table 2]

In the granular nucleating agent composition according to Comparative Example 1, since the ratio of the binder to the nucleating agent was small, a uniform granular granulated product could not be obtained. Dispersion in the polyolefin resin is insufficient, and a polyolefin resin having excellent rigidity is not provided. Since the granular nucleating agent composition according to Comparative Example 2 has a small ratio of metal soap to the nucleating agent, the resulting composition is not sufficiently dispersed in the polyolefin resin, and a polyolefin resin having excellent rigidity is obtained. Do not give.

On the other hand, in Comparative Example 3, a nucleating agent and metallic soap were added as fine powder to a polyolefin resin, melt-kneaded and formed into pellets, and the nucleating agent was uniformly mixed in the polyolefin resin. And the resulting resin composition is inferior in rigidity.

[0063]

As described above, the granular nucleating agent composition according to the present invention is obtained by mixing a nucleating agent, metallic soap and a binder with a high-speed solid mixer equipped with rotating blades. A composition obtained by softening a binder and granulating into granules,
By blending this with a polyolefin resin and melt-kneading, it is possible to significantly disperse the nucleating agent in a powdery state as it is, as compared with a case where the nucleating agent is blended with the polyolefin resin and melt-kneaded.

Therefore, the polyolefin resin composition obtained in this manner has a remarkably higher rigidity improving effect than the resin composition obtained by blending the nucleating agent in powder form with the polyolefin resin. Since the amount of the nucleating agent required to give the same performance to the resin can be reduced, the production cost of the resin composition can be reduced.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hideo Tsujimoto 5-1-1 Ebishima-cho, Sakai City, Osaka Prefecture F-term (reference) 4J002 AE032 AE042 AE052 AF022 BA012 BB031 BB032 BB041 BB051 BB061 BB071 BB081 BB091 BB101 BB121 BB122 BB141 BB151 BB171 BP021 CH022 DJ046 EA018 EC068 EF008 EF018 EG027 EG037 EG047 EG076 EH038 EH048 EH058 EH088 EH148 EP008 EW046 FD202 FD208

Claims (12)

[Claims] 1. Granular nucleation comprising 10 to 100 parts by weight of metal soap and 10 parts by weight or more of a binder comprising an organic compound having a melting point lower than that of metal soap based on 100 parts by weight of nucleating agent. Composition. 2. A rotating blade comprising 10 to 100 parts by weight of metal soap and 10 parts by weight or more of a binder made of an organic compound having a melting point lower than that of metal soap based on 100 parts by weight of nucleating agent. A granular nucleating agent composition obtained by mixing with a high-speed solid mixer and softening the binder to form granules. 3. The granular nucleating agent composition according to claim 1, wherein the nucleating agent is at least one selected from organic phosphoric acid ester metal salts and aromatic carboxylic acid metal salts. 4. The granular nucleating agent composition according to claim 3, wherein the organophosphate metal salt is an alkali metal salt. 5. The organic phosphate metal salt is a lithium salt,
The granular nucleating agent composition according to claim 4, which is a potassium salt or a sodium salt. 6. The granular nucleating agent composition according to claim 3, wherein the aromatic carboxylic acid metal salt is an alkali metal salt. 7. The granular nucleating agent composition according to claim 3, wherein the metal salt of the aromatic carboxylic acid is a sodium salt. 8. The granular nucleating agent composition according to claim 3, wherein the metal salt of the aromatic carboxylic acid is an aluminum salt. 9. The granular nucleating agent composition according to claim 6, wherein the metal salt of an aromatic carboxylic acid is a metal salt of benzoic acid. 10. The granular nucleating agent composition according to claim 1, which has an average particle size in a range of 50 μm to 2 mm. 11. A polyolefin resin obtained by mixing 0.005 to 5 parts by weight of a granular nucleating agent composition according to any one of claims 1 to 10 with 100 parts by weight of a polyolefin resin in terms of a nucleating agent. Composition. 12. The polyolefin resin composition according to claim 11, wherein the polyolefin resin is polyethylene or polypropylene.