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Ultraviolet-cured waterborne polyurethane-acrylate glossy leather finishing agent

A polyurethane acrylate and leather finishing agent technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of long curing time, poor adhesion, low gel content, etc., and achieve the effect of fast curing speed

Inactive Publication Date: 2017-05-31
建德市顺发化工助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the double bond content of photocurable polyurethane prepared by this method is not very high, resulting in a long curing time and a low gel content.
The patent application number 200610038981.4 uses a reactive diluent to increase the double bond content, resulting in poor adhesion, and the irritation of the reactive diluent will cause damage to the construction workers

Method used

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  • Ultraviolet-cured waterborne polyurethane-acrylate glossy leather finishing agent
  • Ultraviolet-cured waterborne polyurethane-acrylate glossy leather finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 100g of polytetrahydrofuran ether diol to a four-necked flask equipped with a stirring paddle and a thermometer, dehydrate in vacuum at 110°C for 2 hours, then take 36g of isophorone diisocyanate into the four-necked flask, and add 0.018g of catalyst dilaurel Dibutyltin acid, reacted at 80°C for 2 hours; after the NCO group content was measured to be 3.46% of the theoretical value by the toluene-di-n-butylamine method, the temperature was lowered to 50°C, and then 2,2-dimethylolpropane was added Acid (DMPA) 7g, 1,4-butanediol (BDO) 4g, castor oil modified polyol (941#) 10g, heat up to 80°C for 2h; then lower the temperature to 50°C, add end-capping agent Hydroxyethyl acrylate (HEA) 6.5g, free radical inhibitor hydroquinone 0.3g, heat up to 65°C and react for 3h; lower the temperature to 30°C, add 4.23g of triethylamine (TEA) dissolved in acetone Neutralize the system for 10 minutes; finally, quickly add 205 g of ice deionized water under high-speed stirring, and qui...

Embodiment 2

[0039] Add 50g of polycaprolactone diol and 5g of hydroxyl-terminated reactive silicone Tech-2120 into a four-necked flask equipped with a stirring paddle and a thermometer, vacuum dehydrate at 110°C for 2 hours, and then take 78g of isophorone diisocyanate Add a four-necked flask, add 0.02g of catalyst dibutyltin dilaurate, and react at 80°C for 2h; use the toluene-di-n-butylamine method to measure the NCO group content to 13.8% of the theoretical value, then lower the temperature to 50°C , then add 10g of 2,2-dimethylolpropionic acid (DMPA), 12.9g of 1,4-butanediol (BDO), 10g of castor oil modified polyol (941#), and heat up to 80°C for 2h then lower the temperature to 50°C, add 14g of end-capping agent hydroxyethyl acrylate (HEA), 0.3g of free radical inhibitor hydroquinone, heat up to 65°C for 3h; lower the temperature to 30°C, add solvent Neutralize the system with 6.04g of triethylamine (TEA) in acetone for 10min; finally, quickly add 280g of ice-deionized water under hi...

Embodiment 3

[0042] Add 50g of polycaprolactone diol into a four-necked flask equipped with a stirring paddle and a thermometer, dehydrate in vacuum at 110°C for 2 hours, then take 76g of isophorone diisocyanate into the four-necked flask, and add 0.018g of catalyst two Dibutyltin laurate, reacted at 80°C for 2h; after the NCO group content measured by the toluene-di-n-butylamine method reached a theoretical value of 6.77%, lower the temperature to 50°C, and then add 2,2-dimethylol Propionic acid (DMPA) 11g, 1,4-butanediol (BDO) 8g, castor oil modified polyol (912#) 11g, heat up to 80°C for 2h; then lower the temperature to 50°C, add capping Agent hydroxyethyl acrylate (HEA) 13.5g, radical inhibitor hydroquinone 0.25g, heat up to 65°C and react for 3h; lower the temperature to 30°C, add triethylamine (TEA) 6.65g dissolved in acetone g to neutralize the system for 10 minutes; finally, quickly add 227 g of ice deionized water under high-speed stirring, and quickly disperse for 1 hour to obta...

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Abstract

The invention discloses an ultraviolet-cured waterborne polyurethane-acrylate glossy leather finishing agent, which is prepared by mixing the following components in percentage by weight: 10-30% of polyols, 10-40% of isocyanate, 2-10% of small-molecular dihydric alcohol with molecular weight of 150 below, 2-5% of hydrophilic chain extender, 2-5% of chain extension modifier, 3-8% of acrylate terminated agent, 0.01-0.1% of catalyst, 0.01-0.5% of free radical polymerization inhibitor, 1-3% of neutralizing agent, 0.5-1% of waterborne thickener, 3-5% of feeling agent, 0.5-1% of moisturizing agent, 0.04-0.1% of leveling agent, 0.01-0.5% of photoinitiator, and the balance of deionized water. The ultraviolet-cured waterborne polyurethane-acrylate glossy leather finishing agent has the characteristics of being low-viscosity, green and environment-friendly, high in curing speed and the like, and is especially suitable for being used as a leather or artificial leather finishing agent.

Description

technical field [0001] The invention relates to a leather finishing agent, in particular to an ultraviolet light curing water-based polyurethane acrylate glossy leather finishing agent. Background technique [0002] An important link in the production process of leather is finishing. In this process, the beauty and durability of the leather can be increased, the grade of the leather can be improved, and the artificial leather is closer to the genuine leather. Water-based polyurethane leather finishing agent has received widespread attention in recent years, and is loved by people because of its non-polluting, low cost, good wear resistance and convenient storage. Moreover, when water-based polyurethane is used for leather finishing, it has the advantages of good leveling, good film-forming performance, strong hiding power and adhesive fastness. The finished leather has the characteristics of brightness, plumpness, wear resistance, etc., and also has the advantages of good e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/16C08G18/48C08G18/42C08G18/61C08G18/32C08G18/34C08G18/36C08G18/75C08G18/66C08G18/67C08G18/24C08F283/00C08F220/36
CPCC08F283/008C08G18/0823C08G18/246C08G18/3206C08G18/348C08G18/36C08G18/4018C08G18/4277C08G18/4829C08G18/4854C08G18/664C08G18/6659C08G18/6662C08G18/6674C08G18/6692C08G18/6696C08G18/6705C08G18/755C09D175/16C08F220/36
Inventor 胡水仙朱张林王娟张亚楠
Owner 建德市顺发化工助剂有限公司