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Core-shell-type styrene-acrylic emulsion with dual-gradient structures contained in shell layers and preparing method thereof

A styrene-acrylic emulsion and dual-gradient technology, applied in the field of core-shell styrene-acrylic emulsion and its preparation, can solve the problems of low paint film property, styrene-acrylic emulsion cannot have both scrub resistance and the like, and achieve good and excellent paint film effect. The effect of scrub resistance and low film forming temperature

Inactive Publication Date: 2015-12-23
SKSHU PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a core-shell styrene-acrylic emulsion with a double-gradient structure in the shell layer and a preparation method thereof, which solves the problem that the styrene-acrylic emulsion on the market cannot have excellent scrub resistance, paint film performance and low film-forming temperature technical problem

Method used

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  • Core-shell-type styrene-acrylic emulsion with dual-gradient structures contained in shell layers and preparing method thereof
  • Core-shell-type styrene-acrylic emulsion with dual-gradient structures contained in shell layers and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Accurately weigh 6 parts of deionized water, 0.05 part of alkyl polyoxyethylene sodium sulfate, 0.05 part of alkyl polyoxyethylene ether, 1.0 part of ethyl acrylate, 3 parts of butyl acrylate and 0.05 part of glycidyl acrylate. In the emulsification tank of cylinder A, then adjust the stirring speed to 1500r / min, and stir for 10min to prepare the core layer monomer pre-emulsion.

[0025] 2) Accurately weigh 12 parts of deionized water, 0.05 parts of alkyl polyoxyethylene sodium sulfate, 0.05 parts of alkyl polyoxyethylene ether, 13 parts of shell monomer styrene in cylinder B of the emulsification kettle, 4 parts of ethyl acrylate and Put 0.05 part of glycidyl acrylate in the emulsification kettle of tank B, then adjust the stirring speed to 1500r / min, and stir for 10 min to prepare the shell monomer pre-emulsion of tank B.

[0026] 3) Accurately weigh 12 parts of deionized water, 0.05 parts of alkyl polyoxyethylene sodium sulfate, 0.05 parts of alkyl polyoxyethylene...

Embodiment 2

[0029] 1) Accurately weigh 7 parts of deionized water, 0.1 part of alkyl polyoxyethylene sodium sulfate, 0.1 part of alkyl polyoxyethylene ether, 1.6 parts of ethyl acrylate, 6 parts of butyl acrylate and 0.25 parts of glycidyl acrylate. In the emulsification tank of cylinder A, then adjust the stirring speed to 2000r / min, and stir for 10min to prepare the core layer monomer pre-emulsion.

[0030] 2) Accurately weigh 13 parts of deionized water, 0.1 part of alkyl polyoxyethylene sodium sulfate, 0.1 part of alkyl polyoxyethylene ether, 16 parts of shell monomer styrene in cylinder B of emulsification kettle, 7 parts of ethyl acrylate and Put 0.25 parts of glycidyl acrylate in the tank B emulsification kettle, then adjust the stirring speed to 2000r / min, and stir for 10 minutes to prepare the shell monomer pre-emulsion of tank B.

[0031] 3) Accurately weigh 13 parts of deionized water, 0.1 part of alkyl polyoxyethylene sodium sulfate, 0.1 part of alkyl polyoxyethylene ether, 10...

Embodiment 3

[0034] 1) Accurately weigh 6 parts of deionized water, 0.1 parts of anionic emulsifier ARICO25180, 0.1 part of nonionic emulsifier EmulsogenLCN4070, 6 parts of butyl acrylate, 0.2 parts of glycidyl acrylate, 0.2 parts of methacrylic acid and acrylamide 0.4 parts were placed in the emulsification kettle of cylinder A, and then the stirring speed was adjusted to 2000r / min, and stirred for 10 minutes to prepare the core layer monomer pre-emulsion.

[0035] 2) Accurately weigh 12 parts of deionized water, 0.1 parts of anionic emulsifier ARICO25180, 0.1 part of nonionic emulsifier EmulsogenLCN4070, 13 parts of styrene, 6 parts of butyl acrylate, 0.1 part of divinylbenzene, methacrylic acid 0.2 parts and 0.4 parts of acrylamide were placed in the B tank emulsification kettle, then the stirring speed was adjusted to 2000r / min, and stirred for 10 minutes to prepare the B tank shell monomer pre-emulsion.

[0036]3) Accurately weigh 12 parts of deionized water, 0.1 parts of anionic emul...

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Abstract

The invention relates to core-shell-type styrene-acrylic emulsion with dual-gradient structures contained in shell layers. The core-shell-type styrene-acrylic emulsion is prepared from, by weight, 47.5 parts to 53 parts of deionized water, 18.0 parts to 28.6 parts of (methyl) acrylate monomers, 20 parts to 26 parts of styrene, 0.1 part to 0.5 part of cross-linking monomers, 0.5 part to 1.5 parts of emulsifying agents, 0.05 part to 0.3 part of initiators, 0.01 part to 0.05 part of pH buffering agents and 0.1 part to 0.5 part of pH regulating agents. The core-shell-type styrene-acrylic emulsion has the advantages that the styrene-acrylic emulsion is of a double-core-shell structure, the shell layers are of soft-hard-soft structures and are of the gradient structures, and the styrene-acrylic emulsion is good in film painting effect and has excellent scrubbing resistance and low film forming temperature.

Description

technical field [0001] The invention belongs to the technical field of synthesis in polymer chemistry, and in particular relates to a core-shell type styrene-acrylic emulsion with a double gradient structure in the shell layer and a preparation method thereof. Background technique [0002] With the introduction of the concept of "particle structure" in the last century, the synthesis of core-shell emulsions has become the focus of research. What attracts attention is that the core-shell emulsion has a significant effect on controlling VOC emissions. Under the same formula system, the design of inner-hard and outer-soft emulsion can effectively reduce the minimum film-forming temperature of the coating film without affecting other physical properties, thereby reducing the amount of film-forming aids and achieving the purpose of reducing VOC emissions. [0003] Styrene-acrylic emulsion is one of the emulsions with the largest amount of paint, and its performance has attracted...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/32C08F2/26C08F2/30C08F220/06C08F220/56C08F212/36C09D125/14
Inventor 洪杰李祥文
Owner SKSHU PAINT
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