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High-adhesion room-temperature self-crosslinking acrylic resin, and preparation method and application thereof

An acrylic resin, high-adhesion technology, used in adhesive types, coatings, primers, etc., can solve the problems of poor substrate adhesion, long construction time, and troublesome construction, and achieve strong adhesion and improved adhesion. The effect of joint density and easy construction

Active Publication Date: 2020-04-24
广东华珀科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the room temperature self-crosslinking technology that has been studied the most is basically the introduction of diacetone acrylamide and acrylate copolymers, and then modifying the acrylic resin with adipic acid dihydrazide (ADH). The obtained acrylic resin is almost All are water-based acrylic emulsions, while oily room temperature self-crosslinking system acrylic resins are less reported
At the same time, the weather-resistant coating has poor adhesion, long construction time, troublesome construction or poor adhesion on other substrates in the protective application of spraying polyurea.

Method used

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  • High-adhesion room-temperature self-crosslinking acrylic resin, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of high adhesion room temperature self-crosslinking type acrylic resin, the specific implementation steps are as follows:

[0027] Mix 25 parts of xylene and 20 parts of propylene glycol methyl ether acetate solvent and heat up to 120°C, put in 3 parts of high-chlorinated polypropylene resin, stir and dissolve, and keep warm for 30 minutes; In the mixed solvent of the resin, and carry out the polymerization reaction, maintain the polymerization reaction temperature at 120 ° C, and drop the reaction time for 3 hours. The mixed monomer is made of the following weight fractions: 19 parts of methyl methacrylate, butyl methacrylate 14.3 parts, 3 parts of butyl acrylate, 0.4 part of acrylic acid, 3 parts of ethyl isocyanate acrylate, 0.2 part of di-tert-butyl peroxide; mix the remaining 12 parts of butyl acetate and 0.1 part of di-tert-butyl peroxide, Add dropwise to the reactor within 30 minutes, raise the temperature and maintain the reaction temperatur...

Embodiment 2

[0029] A preparation method of high adhesion room temperature self-crosslinking type acrylic resin, the specific implementation steps are as follows:

[0030] Heat 35 parts of xylene and 10 parts of butyl acetate solvent to 110°C, put in 2.5 parts of high-chlorinated polypropylene resin, stir and dissolve, and keep warm for 30 minutes; add the mixed monomer dropwise to the mixed solvent dissolved in high-chlorinated polypropylene resin and carry out the polymerization reaction, maintain the polymerization reaction temperature at 130 ° C, and drop the reaction time for 5 hours. The mixed monomers are made of the following weight fractions: 22 parts of methyl methacrylate, 12.3 parts of butyl methacrylate, acrylic acid 3.0 parts of butyl ester, 0.4 part of acrylic acid, 2.5 parts of ethyl isocyanate acrylate, 0.2 part of di-tert-butyl peroxide; mix the remaining 12 parts of xylene and 0.1 part of di-tert-butyl peroxide, and drop them within 30 minutes , heat up and maintain the ...

Embodiment 3

[0032] A preparation method of high adhesion room temperature self-crosslinking type acrylic resin, the specific implementation steps are as follows:

[0033] Heat 45 parts of xylene solvent to 150°C, put in 3.5 parts of high-chlorinated polypropylene resin, stir and dissolve, and keep warm for 40 minutes; drop the mixed monomer into the mixed solvent dissolved in high-chlorinated polypropylene resin, and carry out polymerization Reaction, keep the polymerization reaction temperature at 125°C, dropwise reaction time is 4h, the mixed monomers are made of the following weight fractions: 15 parts of methyl methacrylate, 17.8 parts of butyl methacrylate, 4 parts of butyl acrylate, 0.4 parts of acrylic acid, 2 parts of isocyanate ethyl acrylate, 0.2 parts of di-tert-butyl peroxide; mix the remaining 12 parts of propylene glycol methyl ether acetate and 0.1 parts of di-tert-butyl peroxide, drop them within 30 minutes, and heat up And maintain the reaction temperature at 138°C; maint...

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Abstract

The invention relates to a resin, and a preparation method and an application thereof, and discloses a high-adhesion room-temperature self-crosslinking acrylic resin, and a preparation method and an application thereof. The resin is prepared from, by weight, 15 to 22 parts of methyl methacrylate, 12 to 18 parts of butyl methacrylate, 3 to 7 parts of butyl acrylate, 0.3 to 1 part of acrylic acid, 2to 5 parts of high chlorinated polypropylene resin, 1 to 5 parts of ethyl isocyanate acrylate, 0.2 to 0.5 part of di-tert-butyl peroxide and 40 to 65 parts of an organic solvent. The high-adhesion room-temperature self-crosslinking acrylic resin can be used to prepare various kinds of paints or can be directly brushed, has the advantages of good film-forming property, excellent water resistance and chemical resistance, easiness in construction and high adhesive force, and particularly has strong adhesive force on spraying polyurea, epoxy resin, bi-component PU and other base materials, so that the resin is particularly suitable for being used as an interlayer overlapping agent of epoxy resin or spraying polyurea or bi-component PU and other base materials.

Description

technical field [0001] The invention relates to a resin and its preparation method and application, in particular to a high adhesion room temperature self-crosslinking acrylic resin and its preparation method and application. Background technique [0002] Acrylic resin is a resin made by the copolymerization of acrylates, methacrylates and other ethylenic monomers. By choosing different resin structures, different formulas and different functional monomers, different types, different properties and different applications can be synthesized. Acrylics for occasions. [0003] Self-crosslinking acrylic resin generally introduces crosslinking groups or crosslinking systems on the main chain of the acrylic resin. When the acrylic resin is dried into a film, a polymer with a network structure is formed through the reaction between the crosslinking groups. Thereby changing the characteristics of acrylic resin, such as poor solvent resistance, high water absorption, hot stickiness a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F255/02C08F220/14C08F220/36C08F220/18C09D151/06C09J151/06
CPCC08F255/023C09D151/06C09D5/002C09J151/06C08F220/14C08F220/36
Inventor 王杰明
Owner 广东华珀科技有限公司
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