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Thermoplastic acrylic resin and preparation method thereof

A technology of thermoplastic acrylic acid and butyl acrylate, which is applied in the field of acrylic resin and its preparation, can solve the problems of poor workability and high viscosity of acrylic resin, and achieve the effect of plump appearance, low VOC emission and good dryness

Inactive Publication Date: 2015-08-12
CHONGQING BODUO PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared acrylic resin has high viscosity and poor workability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 30 g of methyl methacrylate, 25 g of butyl acrylate, 18 g of isobornyl methacrylate, 3 g of hydroxyethyl acrylate, 1 g of acrylic acid and 39 g of butyl acetate into the reaction kettle, stir, and heat up to reflux. Then the benzoyl peroxide of 1g is dissolved in 39g butyl acetate, drips in reactor, and dropwise time is about 4h, after dripping, insulation reflux reaction 1h, cooling discharge, obtains thermoplastic acrylic resin, and its solid content is 50.2%, the Gage tube viscosity is 15S (23±2°C).

Embodiment 2

[0038] Add 25g of methyl methacrylate, 20g of butyl acrylate, 2g of hydroxyethyl acrylate, 10g of isobornyl acrylate, 5g of cyclohexyl methacrylate, 2g of acrylic acid and 53g of butyl acetate into the reaction kettle, stir, and heat up to reflux . Then 2g of azobisisobutyronitrile is dissolved in 13g of butyl acetate, and is dropped into the reaction kettle for about 4 hours. The content is 49.9%, and the Gage tube viscosity is 10S (23±2°C).

Embodiment 3

[0040] Methyl methacrylate 40g, butyl acrylate 30g, hydroxyethyl acrylate 5g, tert-butyl cyclohexyl methacrylate 10g, methacrylate 3.3.5. Trimethylcyclohexyl 20g, acrylic acid 2g and butyl acetate Add 87g of ester into the reaction kettle, stir, and heat up to reflux. Then 2g of tert-butyl peroxybenzoate is dissolved in 22g of butyl acetate, dripped into the reactor, and the dropwise addition time is about 4h. After dripping, it is incubated and refluxed for 1h, cooled and discharged to obtain thermoplastic acrylic resin. The content is 51.2%, and the Grizzard tube viscosity is 12S (23±2°C).

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Abstract

The invention discloses a thermoplastic acrylic resin. The thermoplastic acrylic resin is characterized by comprising the raw materials in parts by weight: 25-40 parts of methyl methacrylate, 20-30 parts of butyl acrylate, 15-30 parts of alkyl-containing acrylic monomer, 2-5 parts of hydroxyethyl acrylate, 1-2 parts of acrylic acid, and 1-2 parts of initiator, wherein the alkyl-containing acrylic monomer is one of isobornyl methacrylate, isobornyl acrylate, cyclohexyl methacrylate, tert-butyl cyclohexyl methacrylate and 3,3,5-trimethyl cyclohexyl methacrylate, or the compound thereof. The invention further provides a preparation method for the thermoplastic acrylic resin. The thermoplastic acrylic resin disclosed by the invention is high in Tg value, low in viscosity, good in application property, levelling property and dryness, full and bright in appearance, not easy to generate indentations, low in VOC (volatile organic compounds) discharge, and environment-friendly.

Description

technical field [0001] The invention relates to an acrylic resin and a preparation method thereof, in particular to a thermoplastic acrylic resin and a preparation method thereof. Background technique [0002] Thermoplastic acrylic resin can be melted and dissolved in an appropriate solvent. The coating prepared from it depends on the aggregation of macromolecules after the solvent volatilizes to form a film. There is no cross-linking reaction during film formation. It is a non-reactive coating and is widely used in the coating industry. [0003] At present, there are many researches on thermoplastic acrylic resin, but most of its formulations use styrene, resulting in poor weather resistance, low glass transition temperature Tg, and high viscosity. At the same time, most of its preparation process is to drop raw materials and initiators into the reaction kettle together. Reaction, this reaction method determines its wide molecular weight distribution, low molecular weight, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/28C08F220/06C09D133/08C09D133/12C09D133/10
Inventor 杨中贵高仕全何柯李增梅付丽娟
Owner CHONGQING BODUO PAINT
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