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High-solid low-viscosity acrylic resin and preparation method thereof

A technology of acrylic resin and acrylate, which is applied in the field of resin, can solve the problems of shortening the synthesis time of acrylic resin, small polymer molecular weight, and reducing production cost, and achieve the effects of shortening synthesis time, small molecular weight, and reducing production cost

Inactive Publication Date: 2015-06-03
SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a kind of high-solid low-viscosity acrylic resin and its preparation method, which shortens the synthesis time of acrylic resin, reduces the production cost, and the molecular weight of the polymer is small and the degree of branching is low; Ordinary acrylic resins have high viscosity, acid and alkali resistance, and poor water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A high-solid and low-viscosity acrylic resin, which includes the following formula components in parts by weight: 28 parts of butyl acetate, 4 parts of methacrylic acid, 17 parts of glycidyl tertiary carbonate, 13 parts of styrene, 2 parts of styrene dimer 2 parts, 2 parts of initiator, 11 parts of methyl methacrylate, 10 parts of hydroxyethyl acrylate, 7 parts of n-butyl acrylate, 6 parts of isooctyl acrylate.

[0036] The preparation method of the high-solid low-viscosity acrylic resin specifically comprises the following steps:

[0037] (1) Stir the mixed solution of 25.2 parts of butyl acetate and 15.3 parts of glycidyl tertiary carbonic acid ester to heat up, and keep it under reflux for 0.5h when the temperature reaches 140°C;

[0038] (2) Add 1.6 parts of the mixture of initiator, acrylate, styrene, styrene dimer and methacrylic acid dropwise for copolymerization reaction, the dropping time is controlled at 2 h, and keep warm for 1 h after the dropping is complet...

Embodiment 2

[0041] A high-solid and low-viscosity acrylic resin, which includes the following formula components in parts by weight: 30 parts of butyl acetate, 5 parts of methacrylic acid, 11 parts of glycidyl tertiary carbonate, 16 parts of styrene, and 1 part of styrene dimer 1 part, 1 part of initiator, 12 parts of methyl methacrylate, 10 parts of hydroxyethyl acrylate, 10 parts of n-butyl acrylate, 4 parts of isooctyl acrylate.

[0042] The preparation method of the high-solid low-viscosity acrylic resin specifically comprises the following steps:

[0043] (1) Stir the mixed solution of 27 parts of butyl acetate and 9.9 parts of glycidyl tertiary carbonate to heat up, and keep it under reflux for 1 hour when the temperature reaches 130°C;

[0044] (2) Add 0.8 parts of initiator, acrylate, styrene, styrene dimer and methacrylic acid mixture dropwise for copolymerization reaction, the dropping time is controlled at 2.5 h, and keep warm for 1.5 h after the dropping is completed;

[0045...

Embodiment 3

[0047] A high-solid and low-viscosity acrylic resin, which includes the following formula components in parts by weight: 32 parts of butyl acetate, 4 parts of methacrylic acid, 13 parts of glycidyl tertiary carbonate, 11 parts of styrene, 1 part of styrene dimer parts, 2 parts of initiator, 12 parts of methyl methacrylate, 11 parts of hydroxyethyl acrylate, 9 parts of n-butyl acrylate, and 5 parts of isooctyl acrylate.

[0048] The preparation method of the high-solid low-viscosity acrylic resin specifically comprises the following steps:

[0049] (1) Stir and heat up the mixed solution of 28.8 parts of butyl acetate and 11.7 parts of glycidyl tertiary carbonate, and keep it under reflux for 0.7 hours when the temperature reaches 135°C;

[0050] (2) Add 1.6 parts of the mixture of initiator, acrylate, styrene, styrene dimer and methacrylic acid dropwise for copolymerization reaction, the dropping time is controlled at 3 h, and keep warm for 0.5 h after the dropping is complete...

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Abstract

The invention discloses high-solid low-viscosity acrylic resin and a preparation method thereof. The high-solid low-viscosity acrylic resin comprises butyl acetate, methylacrylic acid, glycidyl tertiary carboxylic ester, styrene, styrene dimer, an initiating agent and acrylate. The preparation method of the high-solid low-viscosity acrylic resin comprises the following steps: stirring mixed solution of part of butyl acetate and part of glycidyl tertiary carboxylic ester, heating, carrying out heat preservation, and refluxing for 0.5-1 hour; then dropwise adding part of mixture of initiating agent, acrylate, styrene, styrene dimer and methylacrylic acid, carrying out copolymerization reaction, and then carrying out heat preservation for 0.5-1.5 hours; and finally dropwise adding the rest mixture of butyl acetate, initiating agent and glycidyl tertiary carboxylic ester, then carrying out heat preservation for 1-2 hours, cooling and discharging. The high-solid low-viscosity acrylic resin disclosed by the invention has the advantages that the acrylic resin synthesis time is shortened, the production cost is reduced, the polymer molecular weight is low, and the branching degree is low; meanwhile, the problems that common acrylic resin on the market is high in viscosity and poor in acid and alkali resistance and water resistance are solved.

Description

technical field [0001] The invention relates to the field of resins, in particular to a high-solid and low-viscosity acrylic resin and a preparation method thereof. Background technique [0002] Acrylic resin is a resin synthesized from acrylate or methacrylate as the main raw material, and the paint with acrylic resin as the main base material is an acrylic paint. Acrylic resins are usually transparent and are the most important of vinyl resins in coating applications. The main absorption peak of acrylate resins for light is outside the solar spectrum range. Therefore, the acrylic paint made of it has particularly excellent light resistance and outdoor aging resistance, is not easy to decompose or turn yellow under ultraviolet radiation, and can maintain the original luster and color for a long time. The main chain of the polymer chain generated by the polymerization reaction is a carbon-carbon structure, which has strong thermal and chemical stability. It does not decomp...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/14C08F220/28C08F220/18C08F220/06C09D125/14C09D133/12C09D175/04
Inventor 郑磊卞建华戴红艳
Owner SHANGHAI ZHENHUA HEAVY IND CHANGZHOU COATINGS CO LTD
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