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Self-deposition coating based on vinylidene chloride-acrylate copolymer latex and preparing method

A technology of copolymer latex and vinylidene chloride, which is applied in coatings, devices for coating liquid on the surface, etc., can solve problems such as poor color stability, and achieve good adhesion fastness, good anti-corrosion performance, and low cost. Effect

Inactive Publication Date: 2007-09-12
清远市美佳乐环保新材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the dehydrochlorination reaction of vinylidene chloride latex, the color stability is not good, and the prior art does not solve this problem well

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Synthesize vinylidene chloride-acrylate copolymer latex earlier, and its technique is as follows:

[0033] Put 45.0 grams of deionized water, 1.2 grams of K12, and 0.6 grams of NP-10 into a reactor and stir evenly, then add 4.0 grams of MAA, 2.0 grams of HPMAS, 1.0 grams of GMA, 26.0 grams of BA, 27.0 grams of MMA, and 37.6 grams of VDC and 0.1 g of TDM, stirred at room temperature for 0.5 hour at a rotation speed of 500-600 rpm to form a pre-emulsion. Then, in another stainless steel reaction kettle, 40.0 grams of deionized water and 0.2 grams of K12 were stirred and dissolved, nitrogen gas was passed to the pressure of the reaction system to 0.25MPa, and the temperature was raised to 60°C, and 0.06 grams of sodium persulfate, 0.06 grams of sodium bisulfite and The solution of 5.0 grams of water is used as the initial initiator, and the pre-emulsion of 1 / 10 is added as the seed emulsion. The reaction system is pan-blue, and the remaining pre-emulsion and the initiator ...

Embodiment 2

[0037] Synthesize vinylidene chloride-acrylate copolymer latex earlier, and its technique is as follows:

[0038] Put 45.0 grams of deionized water, 1.5 grams of 2A1, and 0.6 grams of CO-436 into a reactor and stir evenly, then add 5.0 grams of MAA, 3.0 grams of HPMAS, 1.0 grams of GMA, 28.0 grams of BA, 20.0 grams of MMA, and 13.0 grams of AN , 27.3 g of VDC and 0.1 g of TDM were stirred at room temperature for 0.5 hour at 500-600 rpm to form a pre-emulsion. Then in another stainless steel reaction kettle, stir and dissolve 40.0 grams of deionized water and 0.2 grams of 2A1, pass nitrogen gas until the pressure of the reaction system is 0.25MPa, raise the temperature to 60°C and add a solution of 0.1 grams of APS and 5.0 grams of water as the initial initiator , add 1 / 10 of the pre-emulsion as the seed emulsion, until the reaction system is bluish, and drop the remaining pre-emulsion and initiator at the same time, the initiator is a solution of 0.2 grams of APS and 30.0 gram...

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Abstract

The invention discloses an auto deposition coating and its preparation method based on vinylidene chloride-acrylate copolymer latex. This invention takes vinylidene chloride and acrylic as monomers synthesizing vinylidene chloride-acrylate copolymer latex, and then adds paint, hydrogen peroxide, iron powder, HF and deionized water to prepare the auto deposition coating, which can replace electrophoretic paint for the metal substrates, also the automobile body, trailers and small metal pieces.

Description

technical field [0001] The invention relates to a coating, in particular to a self-deposition coating based on vinylidene chloride-acrylate copolymer latex and a preparation method thereof. Background technique [0002] Self-deposition was invented by the American Am-chem company in the 1960s and began to be applied to industrial coatings in the mid-1970s. At present, the technology is very mature. Auto-deposition paint (also known as self-coating paint) is a full-immersion water-based paint method that automatically covers the surface of steel through a chemical reaction without electricity. It is composed of water, resins, pigments, oxidizing agents and acids. Relying on the chemical action of the micro-battery formed by steel parts (or other metals) in acidic solution, the latex particles (self-deposition coating) in the solution are demulsified and attached to the steel parts, forming a coating like powder coating, and then passing through Cured into a film. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/08C08F2/38C08F2/24C09D127/08C08F220/10C08F220/44C08F220/14B05D7/14
Inventor 王小妹张永彤范云玉张文参郭燕鹏
Owner 清远市美佳乐环保新材股份有限公司
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