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Aqueous latex containing polymer particles with core-shell structure, preparation method of aqueous latex and coating formed by aqueous latex

A technology of polymer particles and water-based latex, which is applied in the direction of coating, etc., and can solve problems such as poor alcohol resistance, coating damage, and splashing

Inactive Publication Date: 2018-12-28
GUANGDONG HUARUN PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in real life, it often happens that alcoholic beverages are spilled on the dining table. In this case, the surface of the coating with poor alcohol resistance will be damaged, and the color will darken, thus weakening the effect on the underlying layer. Substrate Protection

Method used

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  • Aqueous latex containing polymer particles with core-shell structure, preparation method of aqueous latex and coating formed by aqueous latex

Examples

Experimental program
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Effect test

preparation example Construction

[0027] Preparation of water-based latex

[0028] According to another aspect of the present invention, a kind of method for preparing aqueous latex is provided, and described aqueous latex comprises the polymer particle with core-shell structure, and described method comprises the steps:

[0029] a. Emulsion polymerizing the monomer mixture used to form the polymer core to form particles for the polymer core; and

[0030] b. Emulsion polymerizing another monomer mixture for forming the polymer shell in the presence of a seed emulsion containing said polymer core, thereby forming polymer particles having a core-shell structure,

[0031]Wherein, at least one of the polymer core and the polymer shell is formed from a monomer mixture containing isobornyl (meth)acrylate in an amount relative to that used to form the The monomer mixture of the polymer core or the polymer shell is present in the corresponding monomer mixture in an amount ranging from 1% to 40% by weight of the mon...

Embodiment 1

[0089] Example 1: General procedure for the preparation of aqueous latex

[0090] In a four-necked flask, add 50-60wt% styrene, 0-10wt% 2-ethylhexyl acrylate, 0-5wt% methacrylic acid relative to the total weight of the monomer mixture forming the polymer core and a homogeneous mixture of 40-50 wt% methyl methacrylate as a monomer mixture. Next, the monomer mixture is emulsified in a certain amount of water in the presence of a certain amount of an emulsifier to form a pre-emulsion. In another four-necked flask equipped with a stirrer, a thermocouple, and a condenser, add a certain amount of initiator, stir and raise the temperature, and start to add the pre-emulsion dropwise after the temperature rises to a predetermined temperature, and the dropwise addition is completed within 2 hours. After the dropwise addition is completed, the temperature is continued to be maintained at a predetermined temperature for a certain period of time, thereby forming a seed emulsion.

[0091]...

Embodiment 2

[0095] Example 2: Ethanol Wipe Resistance :

[0096]The water-based latex of the above Examples 1-6 was coated on PVC with a 200 μm applicator to form a film, and dried at 50° C. for a certain period of time to prepare the coating to be tested. The water-based latex prepared according to Example 11 of Chinese patent CN101838370A was used as a comparison water-based latex, which was dried and solidified under the same conditions to form a contrast coating. Then according to the standard HG / T4756-2014, under the load of 500g, the ethanol wiping resistance of various coatings was measured with 99% ethanol for up to 1 hour. The test results are summarized in Table 2 below.

[0097] Table 2: Ethanol Wipe Resistance of Various Coatings

[0098] curing conditions

[0099] As can be seen from the structure shown in the above table 2, compared with the water-based latex with higher isobornyl methacrylate prepared by the method of CN121838370A, the water-based latex of the...

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Abstract

The invention relates to aqueous latex containing polymer particles with a core-shell structure, a preparation method of the aqueous latex and a coating formed by the aqueous latex. According to the polymer particles, at least one of a polymer core and a polymer shell is formed by a monomer mixture containing (methyl) isobornyl acrylate, and the (methyl) isobornyl acrylate exists in the monomer mixture in the amount accounting for 1-40% of the total weight of the monomer mixture used for forming the polymer core or the polymer shell.

Description

technical field [0001] The invention relates to a water-based latex and a preparation method thereof. Specifically, the present invention relates to an aqueous latex containing polymer particles having a core-shell structure. The present invention also relates to a coating formed from the above-mentioned aqueous latex having excellent ethanol resistance. Background technique [0002] The aqueous coating composition can be applied to form a coating on various products used in various applications such as residential applications, commercial applications, and industrial applications to provide decorative effects. In addition to providing a decorative effect, it is also desirable for a coating to provide effective protection to its underlying substrate. As we all know, coatings used in home decoration or furniture, especially dining tables, are inevitably attacked by alcohols. For example, in real life, it often happens that alcoholic beverages are spilled on the dining tabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F257/02C08F220/18C08F220/06C08F220/14C08F220/58C08F220/56C08F226/02C09D151/00
CPCC08F257/02C09D151/003C08F220/18C09D4/00C08F265/06C08L2207/53C08F220/1811C09D7/70C09D5/00C09D125/14C09D133/062
Inventor 陈晓锐段刚赵熙
Owner GUANGDONG HUARUN PAINT CO LTD
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