Modified dry alkyd resin and mirror back curtain drenching paint

An alkyd resin and drying technology, applied in coatings, polyester coatings, etc., can solve the problems of unsatisfactory comprehensive performance and single performance of glass silver mirrors, and achieve comprehensive performance, post-processability, and edging and cutting performance Good, improve the effect of water resistance

Inactive Publication Date: 2008-09-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the current glass silver mirror back paint has a single performance, which cannot meet the high requirements of the comprehensive performance of the glass silver mirror.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1- Embodiment 8

[0038] (1) Preparation of modified dry alkyd resin:

[0039] According to Table 1, add dry oleic acid or dehydrated castor oil, polyhydric alcohol and polybasic acid into the reactor, heat up to 177°C, heat up to 240°C after heating for 3 hours, keep the acid value below 20mgKOH / g, and cool down to 200°C ℃, add phenolic resin, keep warm at 200-240 ℃ until the acid value is lower than 35mgKOH / g, then dilute with organic solvent until the solid content is greater than 50.0wt%; or put drying oil and polyol into the air-exhausted Raise the temperature in the reaction kettle, pass inert gas, add LiOH or lead oxide alcoholysis catalyst when the temperature rises to about 100°C, continue to heat up to 240°C, and keep warm until the volume ratio of the alcoholyzed product to anhydrous methanol to the alcoholyzed product is 3∽ After 5:1 transparency (25°C) is the end point of alcoholysis, then add polybasic acid and heat up to 240°C, keep the acid value below 20mgKOH / g, cool down to 20...

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PUM

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Abstract

The invention relates to modified drying alkyd resin and the mirror back curtain paint thereof. The modified drying alkyd resin comprises the following components with the contents by weight percentages: 30.0 percent to 51.0 percent dry oil or dry oleic acid, 30.0 percent to 51.0 percent polybasic acid, 20.0 percent to 41.0 percent polybasic alcohol, 5.0 percent to 20.0 percent phenol-formaldehyde resin and the rest of organic solvent. The modified drying alkyd resin is the phenol-formaldehyde modified drying alkyd resin, the acid value of the resin is lower than 35mgKOH / g, the solid content is larger than 50.0 percent by weight, the mirror back paint which is composed of the resin and pigment, body pigment, additive, amino resin and organic solvent that are selected by the invention has fast curing, high hardness of paint film, good adhesion and great chemical resistance, thus being applicable to the prior production assembly line of glass silver mirrors.

Description

technical field [0001] The invention relates to a compound in the technical field of chemical industry, in particular to a modified dry alkyd resin and a mirror back curtain paint. Background technique [0002] There are two kinds of glass mirrors: aluminum mirror and silver mirror. The performance of glass aluminum mirror is poor, and the quality of glass silver mirror is good. The production method of the glass silver mirror is to first coat a layer of metallic silver on the glass surface with a silver mirror chemical reaction method as a reflective layer, and then use a copper mirror chemical reaction method to coat a layer of metallic copper to increase the reflection effect of the silver film. In order to prevent the metal layer of the glass silver mirror from chemical corrosion and physical damage, primers and topcoats are also required to protect the metal layer on the metal layer of the glass silver mirror. [0003] Glass silver mirror mirror back paint as disclosed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/49C09D167/06
Inventor 罗漫
Owner SHANGHAI JIAO TONG UNIV
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