Multi-crosslinking modified nuclear-shell structure room-temperature self-crosslinking acrylic emulsion and preparation method thereof

A technology of self-crosslinking acrylic acid and core-shell structure is applied in the field of multi-crosslinking modified core-shell structure room temperature self-crosslinking acrylic emulsion and its preparation field, which can solve the problem of poor storage and transportation stability of coatings, affecting coating film performance, and high cost. problem, to achieve the effect of excellent adhesion, reduced water absorption, and low cost

Pending Publication Date: 2019-05-31
郑州中科新兴产业技术研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, modification by introducing functional monomers can only improve the single performance of the coating film, and the cost is high; although physical blending can improve the performance of the material to a certain extent, it is prone to phase separation, and the storage and transportation of the coating Poor stability, affecting the performance of the later coating film

Method used

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  • Multi-crosslinking modified nuclear-shell structure room-temperature self-crosslinking acrylic emulsion and preparation method thereof
  • Multi-crosslinking modified nuclear-shell structure room-temperature self-crosslinking acrylic emulsion and preparation method thereof
  • Multi-crosslinking modified nuclear-shell structure room-temperature self-crosslinking acrylic emulsion and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0024] A room temperature self-crosslinking acrylic acid emulsion with core-shell structure modified by multiple crosslinking, comprising the following components by weight:

[0025] Vinyl soft monomer: butyl acrylate and isooctyl acrylate, accounting for 18 and 7 parts respectively;

[0026] Vinyl hard monomer: methyl methacrylate and styrene, accounting for 10 and 5 parts respectively;

[0027] Functional monomers: methacrylic acid, maleic anhydride, and hydroxyethyl methacrylate, accounting for 1.5, 1, and 2 parts respectively;

[0028] Cross-linking monomers: diacetone acrylamide, acetoxyethyl methacrylate, N-methylol acrylamide, accounting for 2, 2, and 1 parts respectively;

[0029] Cross-linking agent: adipic acid dihydrazide, 1.5 parts;

[0030] Adhesion promoter: methacrylate based alkoxy phosphate, 1 part;

[0031] Emulsifier: allyloxy nonylphenol polyoxyethylene ether monophosphoric acid, dimethyl vinyl phosphate, accounting for 1 and 1 part respectively;

[003...

Embodiment 2

[0042] A room temperature self-crosslinking acrylic acid emulsion with core-shell structure modified by multiple crosslinking, comprising the following components by weight:

[0043]Vinyl soft monomer: butyl methacrylate, butyl acrylate, isooctyl acrylate, and isooctyl methacrylate, accounting for 6, 13, 7, and 2 parts respectively;

[0044] Vinyl hard monomers: methyl methacrylate, methyl acrylate, acrylonitrile, and styrene, accounting for 7, 4, 2, and 4 parts respectively;

[0045] Functional monomers: acrylic acid, methacrylic acid, maleic anhydride, and hydroxyethyl methacrylate, accounting for 1, 0.5, 0.5, and 1 part respectively;

[0046] Cross-linking monomers: diacetone acrylamide, acetoxyethyl methacrylate, N-methylol acrylamide, accounting for 2.5, 1, and 1 parts respectively;

[0047] Cross-linking agent: adipic acid dihydrazide, 2 parts;

[0048] Adhesion Promoter: Methacrylate Alkoxy Phosphate, 2 parts;

[0049] Emulsifier: allyloxy nonylphenol polyoxyethylene...

Embodiment 3

[0060] A room temperature self-crosslinking acrylic acid emulsion with core-shell structure modified by multiple crosslinking, comprising the following components by weight:

[0061] Vinyl soft monomer: butyl methacrylate, butyl acrylate, and isooctyl acrylate, accounting for 7, 15, and 2 parts respectively;

[0062] Vinyl hard monomers: methyl methacrylate, methyl acrylate, acrylonitrile, and styrene, accounting for 7, 4, 2, and 4 parts respectively;

[0063] Functional monomers: acrylic acid, maleic anhydride, and hydroxyethyl methacrylate, accounting for 1, 1, and 1 part respectively;

[0064] Cross-linking monomers: diacetone acrylamide, acetoxyethyl methacrylate, N-methylol acrylamide, accounting for 3, 1, and 1 parts respectively;

[0065] Cross-linking agent: adipic acid dihydrazide, 3 parts;

[0066] Adhesion Promoter: Methacrylate Alkoxy Phosphate, 2 parts;

[0067] Emulsifier: allyloxy nonylphenol polyoxyethylene ether, dimethyl vinyl phosphate, accounting for 2 a...

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Abstract

The invention discloses multi-crosslinking modified nuclear-shell structure room-temperature self-crosslinking acrylic emulsion and a preparation method thereof, and belongs to the field of polymer synthesis. The acrylic emulsion is synthesized by a pre-emulsification-semi-continuous seed core-shell polymerization process, the soft and hard monomer ratio of a nuclear layer and a shell layer is controlled, crosslinking monomers such as diacetone acrylamide, hydroxymethyl acrylamide and acetoxyethyl methacrylate are introduced into the shell layer, and the multi-crosslinking modified acrylic emulsion with a nuclear-shell structure is prepared. The acrylic emulsion has excellent storage and transportation stability and a wide application prospect and can be subjected to multi-crosslinking reaction and cured into a film at room temperature, the water resistance and the mechanical performance of the acrylic film is remarkably improved, and the adhesion of the film for metal, glass and plastic base materials is improved.

Description

technical field [0001] The invention relates to the technical field of polymer synthesis, in particular to a multiple cross-linking modified core-shell structure self-crosslinking acrylic acid emulsion at room temperature and a preparation method thereof. Background technique [0002] Organic solvents account for 50%-80% of traditional solvent-based coatings. These organic solvents are volatile and difficult to recycle, which can easily cause fires, explosions, and serious pollution. They have become the second source of air pollution. With the enhancement of people's awareness of environmental protection and the promulgation of a series of environmental protection laws, environmental friendliness has become the theme of development in the 21st century, and the coating industry is also developing in the direction of energy conservation and environmental protection, and water-based acrylic coatings are a rapidly developing field of environmental protection coatings. . [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F212/08C08F220/06C08F222/06C08F220/20C08F220/58C08F220/28C08F220/48C08F230/02C08F283/06C08F2/30
Inventor 袁东明杨天朝张延强贾永高
Owner 郑州中科新兴产业技术研究院
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