Highly-crosslinked acrylate copolymer as well as preparation method and application thereof as thickening agent

A technology of cross-linking acrylates and acrylates, applied in the direction of multi-color effect coatings, etc., can solve the problems of inability to protect multi-color paint, unable to meet the application, thickening efficiency defects, etc., and achieve good system compatibility and storage stability , to ensure the effect of suspension and stability, surface densification

Pending Publication Date: 2019-07-02
WANHUA CHEMICAL (NINGBO) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above patents are methods for synthesizing thickeners, but some of the raw materials or processes used have defects in thickening efficiency, and some cannot form an effective structure with protective glue to protect the integrity and stability of color particles in colorful paints.
Unable to meet the application in colorful paint

Method used

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  • Highly-crosslinked acrylate copolymer as well as preparation method and application thereof as thickening agent
  • Highly-crosslinked acrylate copolymer as well as preparation method and application thereof as thickening agent
  • Highly-crosslinked acrylate copolymer as well as preparation method and application thereof as thickening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A highly cross-linked acrylic acid ester copolymer, the composition of its synthetic formula is as shown in Table 1:

[0045] Table 1

[0046] raw material Mass / g AAA 40 HEMA 40 TMPDE 0.82 Hypermer B246 0.16 AIBN 0.08 BPO 0.08 Cyclohexane 160 n-Hexane 160 ethyl acetate 400

[0047] The steps of the highly cross-linked acrylic copolymer synthesized by this formula are as follows:

[0048] 1) Add 160g of cyclohexane, 160g of n-hexane and 400g of ethyl acetate into a four-necked flask, connect the condenser, start stirring, and mix well;

[0049] 2) Add 40g monomer AA, 40g monomer HEMA, 0.82g crosslinking agent TMPDE, 0.16g stabilizer Hypermer B246 and 0.08g initiator AIBN and 0.04g initiator BPO into a four-necked flask until the initiator is completely dissolved. Bubble nitrogen for 20-30 minutes;

[0050] 3) Heating in a water bath, raising the temperature to 75°C, reacting for 3 hours, raising the ...

Embodiment 2

[0054] A highly cross-linked acrylic ester copolymer, its synthetic formula composition is as shown in Table 2:

[0055] Table 2

[0056]

[0057]

[0058] The synthesis steps of Example 2 are similar to those of Example 1, and will not be repeated here. The product C2 and sample A2 obtained according to this formula.

Embodiment 3

[0060] A highly cross-linked acrylic acid ester copolymer, its synthetic formula composition is as table 3:

[0061] table 3

[0062] raw material Mass / g AAA 25 MAA 15 HEMA 30 triallyl sucrose ether 0.3 TMPDE 0.4 Hypermer B246 0.14 AIBN 0.07 BPO 0.07 Cyclohexane 150 n-Hexane 150 ethyl acetate 330

[0063] The synthesis steps of Example 3 are similar to those of Example 1, and will not be repeated here. The product C3 and sample A3 obtained according to this formula.

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Abstract

The invention relates to a highly-crosslinked acrylate copolymer as well as a preparation method and application thereof as a thickening agent. The copolymer is prepared by precipitation polymerization triggered by free radicals of a monomer composition containing the following monomers in a solvent: a) 10-80wt% of first monomer component selected from one or more of olefin monounsaturated monomers containing at least one carboxyl group; b) 89.9-15wt% of second olefin monounsaturated monomer component selected from one or more of C1-C4 hydroxyl alkyl esters of a straight chain or a branched chain of (methyl)acrylic acid; and c)0.01-5wt% of crosslinked component selected from polyalkenyl polyether with at least two polymerizable olefin unsaturated double bonds. The highly-crosslinked acrylate copolymer disclosed by the invention shows excellent performances such as high thickening efficiency as well as good system compatibility and storage stability in a multi-color coating.

Description

technical field [0001] The invention relates to a highly cross-linked acrylate copolymer and its preparation method and its use as a thickener for water-based colorful paint systems, replacing the cellulose thickener, and the thickener (rheology modification) It can be dissolved or swelled in water to form a transparent liquid, and at the same time, it can form a structure with the protective glue of the colorful system, so that the color particles in the colorful paint can be kept stable, and the water-whitening resistance of the colorful paint can be improved. Background technique [0002] With the rapid development of my country's architectural coatings industry and the improvement of people's requirements for decoration, water-in-water multi-color paints have received more and more attention. As an exterior wall coating, colorful paint can replace granite and other stones, reduce the mining of natural stones, and protect the environment. At the same time, it avoids the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/20C08F216/14C08F222/14C09D5/29
CPCC08F220/06C09D5/29C08F220/20C08F216/1416C08F222/102
Inventor 冯聪聪张抒刘娇娇乔义涛孙家宽
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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