Acrylic acid modified alkyd resin and preparation method thereof

An acrylic resin and alkyd resin technology, applied in the field of coatings, can solve the problems of easy delamination and turbidity of modified resins, affecting product quality, etc., and achieve the effects of good reactivity, not easy to entangle, and good molecular structure.

Active Publication Date: 2021-06-15
SHANGHAI CARPOLY PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Domestic research on alkyd resins began in the 1950s, and there have been research reports on acrylic-modified alkyd resins since the 1980s, but they basically focused on the research of one-component self-drying acrylic-modified alkyd resins. To study quick-drying and weather resistance, the technical routes include cold spelling method (which has been basically eliminated), monoglyceride method (first synthesize acrylic acid prepolymer with a relatively low molecular weight containing a certain amount of carboxyl groups, then react with monoglyceride, and then add Acrylic modified alkyd resin obtained by further esterification of dicarboxylic acid), copolymerization method (first synthesize an alkyd resin with a conjugated double bond, and then copolymerize with acrylic acid monomer in the presence of an initiator ), although the modified resin synthesized by the latter two methods has a fast drying speed, due to the polarity and compatibility problems of the system, the modified resin is prone to delamination and muddyness, which affects product quality

Method used

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  • Acrylic acid modified alkyd resin and preparation method thereof
  • Acrylic acid modified alkyd resin and preparation method thereof
  • Acrylic acid modified alkyd resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of acrylic acid modified alkyd resin, it is made up of the raw material of following mass fraction:

[0038]

[0039] Wherein, described modified acrylic resin is made up of the raw material of following mass fraction:

[0040]

[0041] The preparation method of above-mentioned acrylic acid modified alkyd resin, comprises the steps:

[0042] The preparation method of modified acrylic resin is:

[0043] S1. In the reactor equipped with a reflux device, according to the above mass fraction, xylene is used as a solvent, and the temperature is raised to a reflux state; then the hard monomer methyl methacrylate, soft monomer butyl acrylate, carboxyl-containing olefin Bulk methacrylic acid, molecular chain control monomer mercaptoethanol, functional monomer dimethylaminoethyl methacrylate, and initiator benzoyl peroxide are uniformly mixed to obtain a mixture and put it into a constant pressure funnel.

[0044] S2. Divide the mixture into four batches, and grad...

Embodiment 2

[0049] A kind of acrylic acid modified alkyd resin, it is made up of the raw material of following mass fraction:

[0050]

[0051] Wherein, described modified acrylic resin is made up of the raw material of following mass fraction:

[0052]

[0053] The preparation method of above-mentioned acrylic acid modified alkyd resin, comprises the steps:

[0054] The preparation method of modified acrylic resin is:

[0055] S1. In the reactor equipped with a reflux device, according to the above mass fraction, xylene is used as a solvent, and the temperature is raised to a reflux state; then the hard monomer methyl methacrylate, soft monomer butyl acrylate, carboxyl-containing olefin Bulk methacrylic acid, molecular chain control monomer mercaptoethanol, functional monomer dimethylaminoethyl methacrylate, and initiator benzoyl peroxide are uniformly mixed to obtain a mixture and put it into a constant pressure funnel.

[0056]S2. Divide the mixture into four batches, and gradu...

Embodiment 3

[0061] A kind of acrylic acid modified alkyd resin, it is made up of the raw material of following mass fraction:

[0062]

[0063] Wherein, described modified acrylic resin is made up of the raw material of following mass fraction:

[0064]

[0065] The preparation method of above-mentioned acrylic acid modified alkyd resin, comprises the steps:

[0066] The preparation method of modified acrylic resin is:

[0067] S1. In the reactor equipped with a reflux device, according to the above mass fraction, use xylene as a solvent, and heat up to a reflux state; then hard monomer styrene, soft monomer butyl methacrylate, carboxyl-containing vinyl monomer Methacrylic acid, molecular chain control monomer n-dodecyl mercaptan, functional monomer dimethylaminoethyl methacrylate, and initiator tert-butyl peroxybenzoate are mixed evenly to obtain a mixture and put it into constant pressure in the funnel.

[0068] S2. Divide the mixture into four batches, and gradually drop them ...

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PUM

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Abstract

The invention discloses acrylic acid modified alkyd resin. The resin is prepared from the following raw materials: modified acrylic resin, polyol, branched carboxylic acid, fatty acid and a catalyst. The modified acrylic resin is prepared from the following raw materials: a hard monomer, a soft monomer, a carboxyl-containing alkene monomer, a molecular chain control monomer, a functional monomer and an initiator. The acrylic acid modified alkyd resin has high hydroxyl content and high branching degree, is applied to double-component polyurethane wood lacquer, has the characteristics of environment friendliness, low VOC (volatile organic compound), good weather resistance, high solid content, low viscosity, good transparency, high cost performance and the like, and completely meets the requirements of a new edition national standard GB18581-2020.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an acrylic modified alkyd resin and a preparation method thereof. Background technique [0002] Alkyd resin was proposed by Kienle of General Electric Company of the United States in 1927. It is a kind of polymer prepared by polycondensation reaction with polyol, polyacid and vegetable oil (fatty acid) as the main raw materials. Due to the mature synthesis technology, easy availability of raw materials, and good comprehensive properties of resin coating films, alkyd resins have become one of the most used and widely used varieties of synthetic resins. Due to the defects of alkyd resin itself (slow drying speed and poor weather resistance), many companies have started research on its modification. The biggest advantage of acrylic resin is fast drying speed and good weather resistance. Acrylic acid can be used to modify alkyd resin has already received a lot of attention. Modification of ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C08G63/685C08G63/49C08G63/60C08F220/14C08F220/18C08F220/06C08F220/34C08F212/08C08G18/68C09D175/14
CPCC08G63/685C08G63/48C08G63/60C08F220/14C08F212/08C08G18/68C08G18/683C09D175/14C08F220/1804C08F220/06C08F220/34
Inventor王晓强谢昊杰郑振杰
OwnerSHANGHAI CARPOLY PAINT