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A kind of preparation method for the cross-linking network intermediate used in the preparation of aqueous two-component system acrylic resin

A technology of acrylic resin and cross-linked network, which is applied in the field of polymers, can solve the problems of low adhesion, strict environmental protection requirements, hardness, insufficient chemical resistance in hardness development, etc., achieve good chemical resistance, promote development trends, and quickly The effect of hardness development

Active Publication Date: 2021-07-27
科思创树脂制造(佛山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional 2K resins contain a large amount of solvents, which cannot meet the increasingly stringent environmental protection requirements under the general trend of comprehensive water-based
At the same time, most of the current water-based two-component system resins are insufficient in hardness, hardness development and chemical resistance, and cannot meet the requirements of high-end woodware
Patent CN106318091 A new type of resin for water-based two-component organic-inorganic hybrid coatings and its preparation method, through inorganic modification, while improving the performance of ordinary two-component materials such as aging resistance, water resistance, and wear resistance, it ensures organic-inorganic composite The stability of the material in water, water can be used as a diluent to further reduce the VOC of the system, but the hardness of the coating is poor, and it cannot solve the problem of water-based two-component self-drying coatings
Patent CN108624240 Normal temperature ketone hydrazine self-crosslinking acrylic resin aqueous dispersion and its preparation method and application, the hardness and rigidity of the resin are further improved through the self-crosslinking structure, but this method is mainly used for peelable glue, and the adhesion is low, so it is not applicable for wood coatings

Method used

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  • A kind of preparation method for the cross-linking network intermediate used in the preparation of aqueous two-component system acrylic resin
  • A kind of preparation method for the cross-linking network intermediate used in the preparation of aqueous two-component system acrylic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Weigh cobalt oxalate and methacrylic acid according to the molar ratio of cobalt oxalate and methacrylic acid of 10%:90%, then put the two into the reaction bottle, and react at 160°C for 1 hour, and add oxidation copper as a catalyst. After the reaction is completed, it is confirmed by FT-IR, and the crosslinking network intermediate for preparing the water-based two-component system acrylic resin can be formed after cooling down to room temperature.

[0016] According to the molar percentage of methyl methacrylate, styrene, butyl acrylate, butyl methacrylate, isooctyl acrylate, hydroxyethyl methacrylate, mercaptopropionic acid is 20%: 14%: 10%: 25% : 25%: 5%: 1%, stir evenly, then add deionized water to make it into an aqueous solution with a solid content of 40%, add 2% ethylene glycol dimethacrylate, 1% sodium sulfite, and react at 80°C for 1 hours and keep warm for 1 hour, then cool down to 50°C.

[0017] Add 10% of the above-mentioned synthetic cross-linked netw...

Embodiment 2

[0021] Weigh cobalt oxalate and methacrylic acid according to the molar ratio of cobalt oxalate and methacrylic acid of 20%:80%, then put the two into the reaction bottle, and react for 1 hour at 160°C. During the reaction, add Copper oxide acts as a catalyst. After the reaction is completed, it is confirmed by FT-IR, and the crosslinking network intermediate for preparing the water-based two-component system acrylic resin can be formed after cooling down to room temperature.

[0022] According to the molar percentage of methyl methacrylate, styrene, butyl acrylate, butyl methacrylate, isooctyl acrylate, hydroxyethyl methacrylate, and mercaptopropionic acid is 20%: 14%: 10%: 25% : 25%: 5%: 1%, stir evenly, then add deionized water to make it an aqueous solution with a solid content of 40%, add 2% ethylene glycol dimethacrylate, 1% sodium sulfite, and react at 80 ° C for 1 hours and keep warm for 1 hour, then cool down to 50°C.

[0023] Add 10% of the above-mentioned syntheti...

Embodiment 3

[0027] Weigh cobalt oxalate and methacrylic acid according to the molar ratio of cobalt oxalate and methacrylic acid of 10%:90%, then put the two into the reaction bottle, and react for 1 hour at 160°C. During the reaction, add Copper oxide acts as a catalyst. After the reaction is completed, it is confirmed by FT-IR, and the crosslinking network intermediate for preparing the water-based two-component system acrylic resin can be formed after cooling down to room temperature.

[0028] According to the molar percentage of methyl methacrylate, styrene, butyl acrylate, butyl methacrylate, isooctyl acrylate, hydroxyethyl methacrylate, and mercaptopropionic acid is 20%: 14%: 10%: 25% :25%:5%:1%, stir well, then add deionized water to make it solid and 40% aqueous solution, add 3% ethylene glycol dimethacrylate, 1% sodium sulfite, react at 80 ° C 1 hour and keep warm for 1 hour, then lower the temperature to 50°C.

[0029] Add 20% of the above-mentioned synthetic cross-linked netw...

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Abstract

A method for preparing a cross-linked network intermediate for preparing an aqueous two-component system acrylic resin, characterized in that: cobalt salt and methacrylic acid monomer are added in a certain proportion, and react at a certain temperature under the action of a catalyst For a period of time, use FT‑IR to measure, so that at 1800cm ‑1 When a large absorption peak appears, it proves that the reaction is complete, and the cross-linked network intermediate for preparing the water-based two-component system acrylic resin can be formed after cooling down to room temperature. The present invention is applied in the process of preparing the water-based two-component system acrylic resin, enabling various polymers to achieve network interpenetration, realizing the precise design of the polymer network structure and endowing it with specific properties, and using the network interpenetration technology to make each network The organic phase dissolves in the structure, avoiding phase separation, thereby greatly improving the hardness, hardness development and chemical resistance of the paint film, thereby realizing the replacement of the traditional 2KPU topcoat and promoting the development trend of comprehensive water-based.

Description

technical field [0001] The invention relates to an intermediate used for a resin and a synthesis method thereof, in particular to a cross-linked network intermediate used in the synthesis method of an aqueous two-component system acrylic resin with an interpenetrating network structure, and belongs to the technical field of macromolecules. Background technique [0002] With the improvement of people's material and cultural living standards, consumers have higher and higher requirements for the coating effect of furniture, which in turn promotes the rapid development of domestic wood coatings. The coating effect of the furniture surface will directly affect consumers' choice of furniture, which puts forward higher requirements for wood coatings. [0003] In the high-end wood coating market, the traditional 2KPU topcoat has good gloss, excellent chemical resistance, high hardness and rapid hardness development, and has gradually become the best choice for high-end wood coating...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/06C08F220/18C08F220/14C08F212/08C08F220/20C09D133/10C09D133/08C09D133/02
Inventor 袁智成陶伟余杰
Owner 科思创树脂制造(佛山)有限公司
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