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Special modified rosin resin for road marking paint and preparation method of special modified rosin resin

A technology for modifying rosin and road markings, which is applied in the field of rosin resin, which can solve the problems of endangering the health of construction workers, long drying time, and polluting the environment, and achieves the effects of good photochemical stability, good thermal stability, and good flexibility

Inactive Publication Date: 2013-10-23
GUANGXI ZHONGCHANG RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Road marking paints are divided into traditional solvent-type and hot-melt type. The film-forming materials of solvent-type road marking paints are mostly chlorinated rubber and acrylic resin. The development of lacquer has been limited. The road marking paint with acrylic resin as film-forming substance has short service life, poor wear resistance, long drying time and high price. A large amount of organic solvents volatilizes, seriously pollutes the environment, and endangers the health of construction workers. Therefore, it has been basically eliminated at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put 67.4kg of rosin into the reaction kettle, install a water separator, condenser, thermometer and agitator, pass in nitrogen, start to melt the rosin when the temperature rises, start stirring at about 180°C, slowly add 8kg of fumaric acid, and then control the temperature The temperature is 200°C, react at this temperature for 1 hour, then add 0.3 kg of antioxidant, 18 kg of glycerin, and 6 kg of lauric acid, react at 200°C for 3 hours, then raise the temperature to 230°C, keep for 2 hours, continue to heat up to 250°C, and keep for 1 hour , then raise the temperature to 270°C, react for 7 hours, discharge the water generated by esterification during the reaction process, take a sample to detect the acid value, if it is qualified, vacuumize, extract the remaining small molecular compounds, cool down to 220°C, add 0.3 kg of ultraviolet absorber, and stir evenly , the product is obtained.

Embodiment 2

[0026] Put 76.6kg of rosin into the reaction kettle, install a water separator, condenser, thermometer and agitator, pass in nitrogen, start to melt the rosin when the temperature rises, start stirring at about 180°C, slowly add 5kg of fumaric acid, and then control the temperature The temperature is 200°C, react at this temperature for 1 hour, then add 0.2 kg of antioxidant, 14 kg of glycerin, and 4 kg of lauric acid, react for 3 hours at 200°C, then raise the temperature to 230°C, keep for 2h, continue to heat up to 250°C, and keep for 1h , then raise the temperature to 270°C, react for 7 hours, discharge the water generated by esterification during the reaction process, take a sample to detect the acid value, if it is qualified, vacuumize, extract the remaining small molecular compounds, cool down to 220°C, add 0.2 kg of ultraviolet absorber, and stir evenly , the product is obtained.

Embodiment 3

[0028] Add 84.8kg rosin to the reaction kettle, install a water separator, condenser, thermometer and agitator, pass in nitrogen, start to melt the rosin when the temperature rises, start stirring at about 180°C, slowly add 2kg of fumaric acid, and then raise the temperature to control The temperature is 200°C, react at this temperature for 1 hour, then add 0.1 kg of antioxidant, 10 kg of glycerin, and 3 kg of lauric acid, react at 200°C for 3 hours, then raise the temperature to 230°C, keep for 2 hours, continue to heat up to 250°C, and keep for 1 hour , then raised the temperature to 270°C, and reacted for 7 hours. During the reaction process, the water generated by esterification was discharged, and the acid value was tested by sampling.

[0029] Add 0.1 kg of the mixture and stir evenly to obtain the product.

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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

technical field [0001] The invention relates to a rosin resin, in particular to a special modified rosin resin for road marking paint and a preparation method thereof. Background technique [0002] At present, road marking paint is one of the essential materials to realize the modernization of road traffic. To ensure safe and smooth traffic, road markings play a very important role. Road marking paints are divided into traditional solvent-type and hot-melt type. The film-forming materials of solvent-type road marking paints are mostly chlorinated rubber and acrylic resin. The development of lacquer has been limited. The road marking paint with acrylic resin as film-forming substance has short service life, poor wear resistance, long drying time and high price. A large amount of organic solvents volatilize, seriously pollute the environment, and endanger the health of construction workers. Therefore, they have been basically eliminated at home and abroad. Hot-melt road mark...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04C09D193/04C09D7/12
Inventor 宣景建黄桂彬
Owner GUANGXI ZHONGCHANG RESIN
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