Preparation method of matte hydroxy acrylic resin

A matte hydroxy acrylic and resin technology, applied in the coating and other directions, can solve the problems of precipitation and flocculation of matting agent, influence effect, difficulty in matting of acrylic resin, etc., and achieve the effect of reducing workload, convenient operation and improving matte effect.

Pending Publication Date: 2021-07-30
泰兴盛嘉树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, among the three resins of alkyd resin, polyester resin and acrylic resin, alkyd resin and polyester resin are relatively easy to matte, and acrylic resin is difficult to matt.
The preparation method of the traditional matt paint is generally to disperse various matting agents such as silicon dioxide, wax emulsion, etc. in the resin solution through a high-speed dispersion process to achieve a certain matte effect; but this method requires the resin, matting Accurate selection, design and matching of additives, additives and dispersion process, otherwise it is easy to cause matting agent precipitation and flocculation, affecting the effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of matte hydroxyacrylic resin, comprising the steps of:

[0023] (1) drop into 35 parts of xylenes and 5 parts of modified graft polypropylenes in reactor;

[0024] (2) Put 45 parts of comonomers (20 parts of ethyl methacrylate, 15 parts of methyl methacrylate, 10 parts of acrylic acid) and 0.5 parts of peroxide-3,5,5-trimethylmethacrylate into the dropping kettle tert-butyl hexanoate, after stirring and mixing uniformly, obtain the copolymerization premix;

[0025] (3) Heat up the reaction kettle to 100°C, and drop the copolymerized premixed solution obtained in step (2) into the reaction kettle by using a dropping kettle, the time for the addition is 4h, and after the addition is completed, under the temperature condition of 100°C, Insulation reaction for 1 hour;

[0026] (4) Add 0.5 parts of tert-butyl peroxy-3,5,5-trimethylhexanoate, and continue the heat preservation reaction for 2 hours;

[0027] (5) The temperature of the reaction kettle w...

Embodiment 2

[0031] A preparation method of matte hydroxyacrylic resin, comprising the steps of:

[0032] (1) drop into 45 parts of xylenes and 10 parts of modified graft polypropylenes in reactor;

[0033] (2) 55 parts of comonomers (20 parts of ethyl methacrylate, 15 parts of methyl methacrylate, 10 parts of n-butyl acrylate, 10 parts of acrylic acid) and 1 part of peroxide-3 are dropped into the dropping kettle. , tert-butyl 5,5-trimethylhexanoate, after stirring and mixing uniformly, obtain the copolymerization premix;

[0034] (3) Heat up the reaction kettle to 100°C, and drop the copolymerized premixed solution obtained in step (2) into the reaction kettle by using a dropping kettle, the time for the addition is 4h, and after the addition is completed, under the temperature condition of 100°C, Insulation reaction for 1 hour;

[0035] (4) Add 1 part of tert-butyl peroxy-3,5,5-trimethylhexanoate, and continue the heat preservation reaction for 2 hours;

[0036] (5) The temperature o...

Embodiment 3

[0040] A preparation method of matte hydroxyacrylic resin, comprising the steps of:

[0041] (1) drop into 55 parts of xylenes and 15 parts of modified graft polypropylenes in reactor;

[0042] (2) 60 parts of comonomers (25 parts of ethyl methacrylate, 15 parts of methyl methacrylate, 10 parts of n-butyl acrylate, 10 parts of acrylic acid) and 1.5 parts of peroxide-3 are dropped into the dropping kettle. , tert-butyl 5,5-trimethylhexanoate, after stirring and mixing uniformly, obtain the copolymerization premix;

[0043] (3) Heat up the reaction kettle to 100°C, and drop the copolymerized premixed solution obtained in step (2) into the reaction kettle by using a dropping kettle, the time for the addition is 4h, and after the addition is completed, under the temperature condition of 100°C, Insulation reaction for 1 hour;

[0044] (4) Add 1.5 parts of tert-butyl peroxy-3,5,5-trimethylhexanoate, and continue the heat preservation reaction for 2 hours;

[0045] (5) The tempera...

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PUM

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Abstract

The invention discloses a preparation method of matte hydroxy acrylic resin. The preparation method comprises the following steps: adding a solvent and modified grafted polypropylene into a reaction kettle, wherein the modified grafted polypropylene is formed by grafting polypropylene and a grafting monomer, adding a comonomer and a part of a copolymerization initiator into a dropwise adding kettle, and uniformly stirring and mixing to obtain a copolymerization premixed solution; raising the temperature of the reaction kettle to 100 DEG C, dropwise adding the copolymerization premixed liquid into the reaction kettle by utilizing a dropwise adding kettle, and after dropwise adding is completed, carrying out heat preservation reaction for 1-3 hours under the temperature condition of 100 DEG C; supplementing the other part of the copolymerization initiator, and continuously carrying out heat preservation reaction for 2-4 hours; and cooling the reaction kettle to 60-80 DEG C, and discharging to obtain the matte hydroxy acrylic resin. According to the method, the modified grafted polypropylene is introduced into the acrylic resin, so that the glossiness of the acrylic resin is reduced by utilizing the modified grafted polypropylene, and the hydroxy acrylic resin with a relatively good matte effect is obtained.

Description

technical field [0001] The invention belongs to the technical field of acrylic paints, in particular to a preparation method of a matt hydroxy acrylic resin. Background technique [0002] In the coatings industry, some automotive coatings and furniture coatings have special requirements, requiring resins to be easily matted to form a matte effect. At present, among the three resins of alkyd resin, polyester resin and acrylic resin, alkyd resin and polyester resin are relatively easy to matte, and acrylic resin is difficult to matt. The preparation method of the traditional matt paint is generally to disperse various matting agents such as silicon dioxide, wax emulsion, etc. in the resin solution through a high-speed dispersion process to achieve a certain matte effect; but this method requires the resin, matting Accurate selection, design and matching of additives, additives and dispersion process, otherwise it is easy to cause precipitation and flocculation of matting agen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F220/18C08F220/14C08F220/06C08F255/02C08F222/06C09D151/00
CPCC08F285/00C08F255/02C09D151/003
Inventor 张丹军梁成良
Owner 泰兴盛嘉树脂有限公司
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