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Polycarbonate resin for elastic hand feeling paint, preparation method thereof, and elastic hand feeling paint

A technology of polycarbonate resin and hand-feel paint, applied in polycarbonate coatings, coatings, etc., can solve the problems of high freezing point, weak weather resistance, poor elasticity, etc., and achieve the effect of good softness

Active Publication Date: 2020-06-05
东莞市左镕工实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of preparing polycarbonate resins from these saturated dihydric alcohols are poor elasticity, relatively weak weather resistance, high freezing point and high hardness. Application in Elastic Touch Paint

Method used

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  • Polycarbonate resin for elastic hand feeling paint, preparation method thereof, and elastic hand feeling paint
  • Polycarbonate resin for elastic hand feeling paint, preparation method thereof, and elastic hand feeling paint
  • Polycarbonate resin for elastic hand feeling paint, preparation method thereof, and elastic hand feeling paint

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preparation example Construction

[0028] The present invention also provides a kind of preparation method of polycarbonate resin, and preparation step comprises:

[0029] (1) 40-60 parts of propylene carbonate, 20-30 parts of 1,4 butanediol, 10-20 parts of 3-methyl-1,5-pentanediol, 20-40 parts of butanediol Alkenediol, 0.1-0.5 parts of antioxidant and 0.02-0.1 part of catalyst are put into the reactor, and the temperature is raised;

[0030] (2) The temperature of the reaction kettle material is raised to 240-250°C, and the top temperature of the rectification column of the reaction kettle is not higher than 196°C to steam out the reaction by-products 1 and 2 propylene glycol. internal temperature;

[0031] (3) When the material temperature in the reactor is kept at 250 DEG C, and nitrogen is started to flow into the reactor, the reaction time is 20-30 hours, and when the rectifying column top temperature drops to 190 DEG C, carry out underpressure distillation to obtain polycarbonate resin.

[0032] Prefer...

Embodiment 1

[0039] In parts by weight, the raw materials for preparing polycarbonate resin for elastic handle paint include:

[0040] 40 parts of propylene carbonate;

[0041] 1. 20 parts of 4-butanediol;

[0042] 30 parts of butylene glycol;

[0043] 20 parts of 3-methyl-1,5-pentanediol;

[0044] Sodium methoxide 0.02 part;

[0045] 2. 0.4 part of 6 di-tert-butyl-4-methylphenol.

[0046] Adopt above-mentioned raw material to prepare polycarbonate resin for elastic handle paint, preparation method comprises:

[0047] (1) 40 parts of propylene carbonate, 20 parts of 1,4 butanediol, 20 parts of 3-methyl-1,5-pentanediol, 30 parts of butylene glycol, 0.4 parts of 2 , 6 di-tert-butyl-4-methylphenol and 0.02 parts of sodium methoxide are dropped into the reactor, and the temperature is raised;

[0048] (2) The temperature of the reactor material is raised to 240-250°C, and the top temperature of the rectification column of the reactor is not higher than 196°C to steam out the reaction by-...

Embodiment 2

[0051] The raw materials of this embodiment and the polycarbonate resin used in the preparation of elastic hand paint in embodiment 1 are basically the same, the difference is that the catalyst used in embodiment 2 is magnesium-aluminum hydrotalcite, and the catalyst used in embodiment 1 is sodium methylate. Its preparation method is the same as that of Example 1, and will not be described in detail here.

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Abstract

The invention provides polycarbonate resin for elastic hand feeling paint, which comprises unsaturated double bonds and hydroxyl. The polycarbonate resin for the elastic hand feeling paint contains unsaturated double bonds and hydroxyl groups; compared with the prior art, the polycarbonate resin for the paint with the elastic hand feeling can be subjected to double-bond oxidation self-crosslinkingcuring, and can also be subjected to crosslinking curing with an isocyanate curing agent to form macromolecules, so that the polycarbonate resin for the paint with the elastic hand feeling has dual-curing performance, so that the polycarbonate resin for the paint with the elastic hand feeling has good air-drying performance, softness, hydrolysis resistance, weather resistance and low-temperaturenon-solidification. The invention further provides a preparation method of the polycarbonate resin for the elastic hand feeling paint and the elastic hand feeling paint prepared by taking the polycarbonate resin for the elastic hand feeling paint as a raw material.

Description

technical field [0001] The invention relates to the technical field of elastic feel paint, in particular to a polycarbonate resin for elastic feel paint and a preparation method thereof. Background technique [0002] Polycarbonate resin is a polymer with hydroxyl groups at both ends of the molecule, and is widely used in elastomers, elastic touch paints, and synthetic leathers. The polycarbonate resin used in the market for elastic hand paints is currently mainly 1, 6-hexanediol, 1, 4-butanediol and ethylene glycol and other glycols, which are added to the reaction kettle together with small molecule carbonates and catalysts for esterification. Exchange production, preparation of polycarbonate resin. The disadvantages of preparing polycarbonate resins from these saturated dihydric alcohols are poor elasticity, relatively weak weather resistance, high freezing point and high hardness. Application in elastic touch paint. [0003] Therefore, there is an urgent need to provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/30C08G64/02C09D169/00C09D7/63
CPCC08G64/305C08G64/0291C09D169/00C09D7/63C08K2201/014C08K5/098C08K5/13
Inventor 黄志
Owner 东莞市左镕工实业有限公司
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