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Mirror back lacquer resin and mirror back lacquer

A technology of mirror back paint and resin, which is applied in the chemical industry, can solve the problems of mirror back paint such as easy gelation, single performance, ferric chloride resistance, alkali resistance, and acid resistance, etc., to achieve edge grinding and cutting performance Good, satisfying post-processability, and satisfying the effect of comprehensive performance

Inactive Publication Date: 2008-09-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Mirror back paint for glass silver mirror as disclosed in CN100372899C "mirror back paint resin and curtain coating thereof", is a kind of acrylic acid modified medium oil alkyd resin, then use TDI modified resin, although the paint film made has Quick drying, high hardness and excellent water resistance, but the mirror back paint prepared with this resin is easy to gel, and the resistance to ferric chloride, alkali and acid is not very good
[0007] Mirror back paint for glass silver mirror as disclosed in CN100372900C "mirror back paint resin and curtain coating thereof", is a kind of acrylic acid, phenolic modified medium oil alkyd resin, although the paint film made has quick-drying, high hardness and Excellent water resistance, but the mirror back paint prepared with this resin is easy to gel, and the resistance to ferric chloride is not very good
[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

[0037] (1) Preparation of mirror back paint resin:

[0038] 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 3 hours, and keep the acid value below 20mgKOH / g; or dry Put the basic oil and polyol into the reaction kettle exhausted of air to raise the temperature, and pass in the inert gas. When the temperature rises to about 100°C, add LiOH or lead oxide alcoholysis catalyst, continue to heat up to 240°C, and keep warm until the alcoholysis product is free The volume ratio of water to methanol to the alcoholysis product is 3∽5:1. Transparent (25°C) is the end point of alcoholysis, then add polybasic acid and raise the temperature to 240°C, keep the acid value below 20mgKOH / g, then dilute with organic solvent to If the solid content is greater than 50.0wt%, it is the mirror back paint resin.

[0039] Table 1 (various raw materials in the table are in kilograms)

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Abstract

The invention relates to mirror back paint resin and mirror back paint thereof. The mirror back paint resin comprises the following components with the following weight percentage: dry oil or dry oleic acid is 20.0 to 50.0 percent, polyatomic acid is 20.0 to 50.0 percent, polyatomic alcohol is 10.0 to 40.0 percent and other component is organic solvent. The mirror back paint resin is dry alkyd resin with the acid value less than 20mgKOH / g and the solid content more than 50.0wt percent; the mirror back paint, which consists of the resin as well as the pigments, the extender pigment, the auxiliary agent, the amino resin and the organic solvent selected by the invention, has quick solidifying, high paint film rigidity, strong adhesive force and excellent chemical corrosion resistance; therefore, the mirror back paint is suitable to be used in the production line of the prior glass silver mirror.

Description

technical field [0001] The invention relates to a chemical compound, in particular to a mirror back paint resin and mirror back 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 " coating of glass " of CN1122127A, adopts al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/36C08G63/49C03C17/32
Inventor 罗漫
Owner SHANGHAI JIAO TONG UNIV
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