CN103360952A - Special modified rosin resin for road marking paint and preparation method of special modified rosin resin - Google Patents

Abstract

The invention discloses a special modified rosin resin for road marking paint and a preparation method of the special modified rosin resin. The modified rosin resin comprises the following raw materials in percentage by weight: 67.4%-84.8% of gum rosin, 10%-18% of glycerol, 2%-8% of fumaric acid, 3%-6% of lauric acid, 0.1% - 0.3% of antioxidant and 0.1% - 0.3% of ultraviolet light absorber. The preparation method of the special modified rosin resin comprises the following steps of: adding the gum rosin to a reaction kettle, introducing nitrogen, heating so as to dissolve rosin, adding the fumaric acid, the antioxidant, the glycerol and the lauric acid so as to carry out polymerization esterification reaction, then adding the ultraviolet light absorber, uniformly stirring, and cooling to a room temperature, thus obtaining the product. The modified rosin resin produced by the method can be used for ensuring the strong adhesive force of coatings and has good flexibility and the advantages of cost conversation and environmental protection.

Description

Dedicated modified Gum Rosin of a kind of road mark paint and preparation method thereof

Technical field

The present invention relates to a kind of Gum Rosin, particularly dedicated modified Gum Rosin of a kind of road mark paint and preparation method thereof.

Background technology

At present, road mark paint is to realize one of requisite material of Highway Traffic Modernization, guarantee that traffic safety is unimpeded, and roadmarking plays very important effect.Traffic paint divides traditional solvent-borne type and hot-melting type, solvent-borne type traffic paint filmogen adopts chlorinated rubber more, acrylic resin, but because China's chlorinated rubber turnout is less and less, and price rises steadily, so that the development of this class traffic paint is restricted, traffic paint take acrylic resin as filmogen because the usage period is short, wears no resistance, time of drying is long, price is high, often after the rain block the disengaging occur, and since during construction the organic solvent in the coating volatilize in a large number, serious environment pollution, harm workmen's health, therefore, substantially superseded at home and abroad.Hot melt road marking paint is take synthetic materialss such as natural resin, petroleum resin, polyamide resin, vibrin as filmogen, and along with the variation of world oil supply conditions, petroleum resin price increase, resource shortage.Therefore, for overcoming the above problems, in the urgent need to the film forming matter of a kind of cheap and resourceful material as traffic paint.

Summary of the invention

The purpose of this invention is to provide dedicated modified Gum Rosin of a kind of road mark paint and preparation method thereof.

For realizing above purpose, the technical solution used in the present invention:

The dedicated modified Gum Rosin of a kind of road mark paint comprises the raw material of following weight percent: rosin 67.4%-84.8%, glycerine 10%-18%, fumaric acid 2%-8%, lauric acid 3%-6%, oxidation inhibitor 0.1%-0.3%, UV light absorber 0.1%-0.3%.

The preparation method of the dedicated modified Gum Rosin of a kind of road mark paint may further comprise the steps:

(1) goes out the weight of rosin, glycerine, fumaric acid, lauric acid, oxidation inhibitor and UV light absorber according to designed component content range computation;

(2) get in the rosin adding reactor of the 1st step gained weight, load onto water trap, prolong, thermometer and agitator, pass into nitrogen, intensification begins to melt rosin, about 180 ℃, starts stirring, slowly add fumaric acid, the control temperature that heats up is again reacted 1h at 200 ℃ under this temperature;

(3) add oxidation inhibitor, glycerine, lauric acid, 200 ℃ of reaction 3h are warmed up to 230 ℃ again, keep 2h, continue to be warming up to 250 ℃, keep 1h, be warming up to again 270 ℃, reaction 7h, reaction process is discharged the water that esterification generates, and sampling detects acid number, qualified, vacuumize, extract remaining micromolecular compound out, cool to 220 ℃;

(4) add UV light absorber, stir, namely get product.

Rosin is that various kinds of resin acid and a small amount of lipid acid, neutrals get mixture, its main component is resinous acid, account for 90% of its total amount, resinous acid is that a kind of molecular formula is the summation of the isomers of C19H29COOH, has the luxuriant and rich with fragrance shelf structure of a triatomic ring, two two keys and a carboxyl.At first, rosin conjugated double bond structures and FUMARIC ACID TECH GRADE acid anhydride generation diels-alder reaction under 200 ℃ condition of heating (being the diene synthesis reaction) generate affixture, increased the functionality of molecule, improve softening temperature, acid number, this affixture produces pet reaction with glycerine again, reduce acid number by esterification, increase along with the pet reaction degree, the relative molecular mass of resin increases, further improved softening temperature, simultaneously, also so that the viscosity of resin sharply increase, filmogen as hot melt road marking paint, its viscosity should be not excessive, if viscosity is excessive, mobile bad and dispersed color and filler difficulty then must affect mobile and other performances of paint vehicle, and solution is introduced straight chain group exactly, through test of many times, think a kind of saturated straight chain lipid acid: lauric acid, molecular formula: CH3 (CH2) 10COOH, the carboxyl on this molecule and the hydroxyl reaction on the resin structure lengthen the molecule straight chain, hydroxyl reaction in while and the partial glycerol, form oligopolymer, the reaction final product is so that the modest viscosity of resin, as filmogen, make the good fluidity of traffic paint, fragility is little.

UV light absorber is a kind of photostabilizer, can absorb the ultraviolet part in sunlight and the fluorescence light source, and itself does not change.Unsaturated double-bond in the modified rosin resin molecule because of ultraviolet effect, produces Auto-oxidation reaction under daylight and fluorescence, cause the degraded of polymkeric substance and deteriorated, and outward appearance and mechanical property are degenerated.Optionally absorb this high-octane ultraviolet ray after adding UV light absorber, make it to become harmless energy and discharge or consume.

The present invention has possessed following condition through the UV light absorber of test and Selection:

(1) can absorb consumingly ultraviolet ray.

(2) Heat stability is good, even work in-process can be because heat change yet, hot volatility is little.

(3) chemical stability is good, with in the mixture does not get material component generation adverse effect.

(4) compatibility is good, can be evenly dispersed in the material, and no blooming does not ooze out.

(5) photochemical stability of absorption agent itself is good, does not decompose nondiscoloration.

(6) colourless, nontoxic, odorless.

The present invention has following beneficial effect:

The present invention introduces a kind of saturated fatty acid lauric acid, and special anti-yellowing weather-proof additive UV light absorber, through the polymerization esterification reaction, the gained molecular structure is compatible with other raw materials of traffic paint better, not only reach the desired flowability of traffic paint, and has better toughness, adding polymeric UV absorber makes paint film have stronger chemical stability, the molecular structure that it is special and Gum Rosin polymkeric substance have preferably consistency, and be not painted, hydrolysis, pollution-free, heat-resisting processibility is good, with oxidation inhibitor and usefulness, has good synergy.The modified rosin resin of filling a prescription and producing with the present invention, its all technical all can satisfy the properties requirement of road mark paint take Gum Rosin as film forming matter, the assurance coating adhesion is strong, snappiness is good, and wear resistance, ultimate compression strength, colour fastness, weathering resistance, sliding resistance etc. all reach the detection index.

Rosin have the irreplaceable advantage of some petroleum resin, and China is rosin production big country as the renewable resource of natural product, with modified rosin resin be raw material as the film forming matter of traffic paint, both utilized the advantage of china natural resources, saved again cost.The present invention's favorable reproducibility of filling a prescription, production process is easily controlled, and whole reaction process is atmospheric pressure state, non-pollutant discharge, safety and environmental protection has the saving cost, economizes on resources and the advantage of protection of the environment.

Embodiment

Embodiment 1:

67.4kg rosin is added in the reactor, load onto water trap, prolong, thermometer and agitator pass into nitrogen, intensification begins to melt rosin, about 180 ℃, starts stirring, slowly add fumaric acid 8kg, heat up the control temperature at 200 ℃ again, under this temperature, react 1h, then add oxidation inhibitor 0.3 kg, glycerine 18kg, lauric acid 6 kg, 200 ℃ of reaction 3h, be warmed up to again 230 ℃, keep 2h, continue to be warming up to 250 ℃, keep 1h, be warming up to again 270 ℃, reaction 7h, reaction process is discharged the water that esterification generates, sampling detects acid number, qualified, vacuumize, extract remaining micromolecular compound out, cool to 220 ℃, add UV light absorber 0.3 kg, stir, namely get product.

Embodiment 2:

76.6kg rosin is added in the reactor, load onto water trap, prolong, thermometer and agitator pass into nitrogen, intensification begins to melt rosin, about 180 ℃, starts stirring, slowly add fumaric acid 5kg, heat up the control temperature at 200 ℃ again, under this temperature, react 1h, then add oxidation inhibitor 0.2 kg, glycerine 14kg, lauric acid 4 kg, 200 ℃ of reaction 3h, be warmed up to again 230 ℃, keep 2h, continue to be warming up to 250 ℃, keep 1h, be warming up to again 270 ℃, reaction 7h, reaction process is discharged the water that esterification generates, sampling detects acid number, qualified, vacuumize, extract remaining micromolecular compound out, cool to 220 ℃, add UV light absorber 0.2 kg, stir, namely get product.

Embodiment 3:

84.8kg rosin is added in the reactor, load onto water trap, prolong, thermometer and agitator pass into nitrogen, intensification begins to melt rosin, about 180 ℃, starts stirring, slowly add fumaric acid 2kg, the control temperature that heats up is again reacted 1h at 200 ℃ under this temperature, then add oxidation inhibitor 0.1 kg, glycerine 10kg, lauric acid 3 kg, 200 ℃ of reaction 3h are warmed up to 230 ℃ again, keep 2h, continue to be warming up to 250 ℃, keep 1h, be warming up to again 270 ℃, reaction 7h, reaction process is discharged the water that esterification generates, and sampling detects acid number, and is qualified, vacuumize, extract remaining micromolecular compound out, cool to 220 ℃, add ultraviolet radiation absorption

Agent 0.1 kg stirs, and namely gets product.

Claims (2)

1. dedicated modified Gum Rosin of road mark paint and preparation method thereof, it is characterized in that: described modified rosin resin comprises the raw material of following weight percent: rosin 67.4%-84.8%, glycerine 10%-18%, fumaric acid 2%-8%, lauric acid 3%-6%, oxidation inhibitor 0.1%-0.3%, UV light absorber 0.1%-0.3%.

2. dedicated modified Gum Rosin of road mark paint and preparation method thereof, its feature is being: the preparation method of described modified rosin resin may further comprise the steps:

(1) goes out the weight of rosin, glycerine, fumaric acid, lauric acid, oxidation inhibitor and UV light absorber according to designed component content range computation;

(2) get in the rosin adding reactor of the 1st step gained weight, load onto water trap, prolong, thermometer and agitator, pass into nitrogen, intensification begins to melt rosin, about 180 ℃, starts stirring, slowly add fumaric acid, the control temperature that heats up is again reacted 1h at 200 ℃ under this temperature;

(3) add oxidation inhibitor, glycerine, lauric acid, 200 ℃ of reaction 3h are warmed up to 230 ℃ again, keep 2h, continue to be warming up to 250 ℃, keep 1h, be warming up to again 270 ℃, reaction 7h, reaction process is discharged the water that esterification generates, and sampling detects acid number, qualified, vacuumize, extract remaining micromolecular compound out, cool to 220 ℃;

(4) add UV light absorber, stir, namely get product.