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Polyurethane cured acrylic resin anti-fogging and abrasion-resistant paint and preparation method thereof

An acrylic and wear-resistant coating technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of affecting the popularization and use, poor wear resistance of the coating surface, etc., and achieve low production cost, transparency and wear resistance. Good, improve the effect of surface wear resistance

Inactive Publication Date: 2013-01-09
上海旺俊化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface wear resistance of the coating is poor, which affects its popularization and use.

Method used

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  • Polyurethane cured acrylic resin anti-fogging and abrasion-resistant paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Preparation of blocked polyether isocyanate curing agent:

[0038] After polypropylene glycol is dehydrated, get 32g and add in the 500mL four-necked flask that is equipped with thermometer, stirrer, condenser, under N 2 Under air protection, 24 g of isophorone diisocyanate and 279 mL of ethylene glycol monoethyl ether solvent were added, and after reacting at 85° C. for 4 hours, a milky white transparent liquid polyether isocyanate prepolymer was obtained.

[0039] Then weigh 200g of polyether isocyanate prepolymer and add it into a 500mL four-necked flask equipped with a thermometer, a stirrer and a condenser. Dissolve 17g of methyl ethyl ketone oxime with solvent methyl ethyl ketone, transfer it to a 100mL dropping funnel, add the blocking agent dropwise under stirring, the temperature during dropping is 35°C, and the dropping time is 9min. After adding the blocking agent dropwise, keep the temperature for 1 hour, then raise the temperature to 80°C and continue t...

Embodiment 2

[0049] 1. Preparation of blocked polyether isocyanate curing agent:

[0050] After the polypropylene glycol is dehydrated, get 20g and add it into a 500mL four-necked flask equipped with a thermometer, stirrer and condenser, 2 Add 15 g of isophorone diisocyanate and 174 mL of ethylene glycol monoethyl ether solvent under air protection, and react at 75°C for 3 hours to obtain a milky white transparent liquid polyether isocyanate prepolymer.

[0051] Then weigh 350g of polyether isocyanate prepolymer and add it into a 500mL four-necked flask equipped with a thermometer, a stirrer and a condenser. Dissolve 58g of methyl ethyl ketone oxime with solvent methyl ethyl ketone, transfer it into a 100mL dropping funnel, add the blocking agent dropwise under stirring, the temperature during dropping is 40°C, and the dropping time is 30min. After adding the blocking agent dropwise, keep it warm for 1 hour, then raise the temperature to 80°C and continue the reaction for 6 hours to obtain ...

Embodiment 3

[0059] 1. Preparation of blocked polyether isocyanate curing agent:

[0060] After polypropylene glycol is dehydrated, get 26g and add in the 500mL four-neck flask that is equipped with thermometer, stirrer, condenser, under N 2 Add 19 g of isophorone diisocyanate and 226 mL of ethylene glycol monoethyl ether solvent under air protection, and react at 80°C for 3.5 hours to obtain a milky white transparent liquid polyether isocyanate prepolymer.

[0061] Then weigh 300g of polyether isocyanate prepolymer and add it into a 500mL four-necked flask equipped with a thermometer, a stirrer and a condenser. Dissolve 40 g of methyl ethyl ketone oxime with solvent methyl ethyl ketone, transfer it to a 100 mL dropping funnel, and add the blocking agent dropwise under stirring. After adding the blocking agent dropwise, keep the temperature for 1 hour, then raise the temperature to 80°C and continue the reaction for 5.5 hours to obtain blocked polyether isocyanate as a curing agent.

[0...

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Abstract

The invention discloses polyurethane cured acrylic resin anti-fogging and abrasion-resistant paint and a preparation method thereof. The paint is prepared from the following components in parts by weight: 130-190 parts of hydrophilic acrylic resin, 210-525 parts of blocked polyether-isocyanate used as curing agent and 2.00-5.00 parts of butyltin dilaurate used as catalyst, wherein the blocked polyether-isocyanate curing agent uses polypropylene glycol and isophorone diisocyanate as raw materials. The preparation method of the paint comprises the following steps: reacting to obtain polyether-isocyanate prepolymer and then reacting with methyl ethyl ketoxime used as sealing agent. The test result shows that the paint prepared by the method has high anti-fogging property, good transparency and abrasion resistance and low production cost; and under the premise of ensuring the good anti-fogging property of the paint, the surface wear resistance can be increased and the application prospectis wide.

Description

technical field [0001] The invention relates to a polyurethane cured acrylate resin anti-fog wear-resistant coating and a preparation method thereof. Background technique [0002] In daily life, transparent plastics are widely used, such as automobile lighting fixtures, plastic insulation greenhouses, etc., but in the process of use, as the environment changes in temperature and humidity, fogging will occur on the surface . Fog exists in the form of tiny water droplets. These small water droplets will refract and reflect light, thereby significantly reducing the light transmittance of transparent substrates and bringing inconvenience to life and work. For example, the lighting fixtures of automobiles will condense into fog on the inner wall of the light distribution mirror, and in severe cases, the light transmittance can be reduced by about 20%, which will affect the safety of driving. Therefore, how to solve the anti-fog problem of car lights has attracted extensive atte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C08F220/14C08G18/80C08G18/48
Inventor 王俊俊陈正昊董绍天高云鹤
Owner 上海旺俊化工有限公司
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