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A kind of acrylate latex with bridge particles

A technology of acrylate glue and acrylate, which is applied in the field of acrylate latex with bridge particles and acrylate latex, which can solve the problems of poor hardness and adhesion, and achieve easy control of the reaction, good stability, and gel volume. little effect

Active Publication Date: 2019-07-09
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects of poor hardness and poor adhesion in the existing acrylate emulsion, the present invention proposes an acrylate latex with bridge particles

Method used

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  • A kind of acrylate latex with bridge particles
  • A kind of acrylate latex with bridge particles
  • A kind of acrylate latex with bridge particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 8.4g butyl acrylate, 8g methyl methacrylate, 57.5g deionized water, 0.14g potassium persulfate, 0.24g sodium bicarbonate, 0.2g sodium dodecylbenzenesulfonate and 0.8g nonylphenol polyoxygen Vinyl ether was mixed and stirred at 18000rpm for 5 minutes to prepare a pre-emulsion; the pre-emulsion was stirred and reacted at 85°C for 0.5h to obtain a light blue emulsion, and then slowly added dropwise within 3h. Methyl ester, 57.5g deionized water, 0.28g potassium persulfate, 0.4g sodium dodecylbenzenesulfonate, 1.6g nonylphenol polyoxyethylene ether and 1.1g urushiol mixed and emulsified at a high speed of 18000rpm; After the dropwise addition was completed, the constant temperature reaction was continued for 2 hours, then the temperature was raised to 88° C. for 1 hour, the temperature was lowered to room temperature, and the product was discharged.

Embodiment 2

[0018] 20kg ethyl acrylate, 10kg methyl methacrylate, 124kg deionized water, 0.4kg potassium persulfate, 0.8kg sodium bicarbonate, 0.4kg sodium lauryl sulfate and 1.2kg octylphenol polyoxyethylene ether were mixed and Stir at 18000rpm at high speed for 5 minutes to prepare a pre-emulsion; stir the pre-emulsion at 82°C for 0.5 h to obtain a light blue emulsion, then slowly add 80 kg of ethyl acrylate, 40 kg of methyl methacrylate, and 124 kg of Ionized water, 0.8kg potassium persulfate, 0.8kg sodium lauryl sulfate, 2.4kg octylphenol polyoxyethylene ether and 12.6kg urushiol were mixed and emulsified by 18000rpm high-speed stirring; after the dropwise addition, continue to react at constant temperature for 2h , and then the temperature was raised to 87° C. for 1 hour, the temperature was lowered to room temperature, and the product was discharged.

Embodiment 3

[0020] 12g butyl acrylate, 8g methyl methacrylate, 60g deionized water, 0.12g potassium persulfate, 0.12g sodium bicarbonate, 0.2g sodium lauryl sulfate and 0.6g nonylphenol polyoxyethylene ether were mixed and Stir at 18000rpm at high speed for 5 minutes to prepare a pre-emulsion; stir the pre-emulsion at 84°C for 0.5 h to obtain a light blue emulsion, then slowly add 48 g of butyl acrylate, 32 g of methyl methacrylate, and 60 g of Ionized water, 0.24g potassium persulfate, 0.4g sodium dodecylbenzene sulfonate, 1.2g nonylphenol polyoxyethylene ether and 0.4g urushiol are stirred and emulsified at a high speed at 18000rpm; React for 2 hours, then raise the temperature to 88°C for 1 hour, then drop the temperature to room temperature, and discharge to obtain the product.

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Abstract

The invention relates to an acrylate latex with bridge particles, which is composed of functional monomer urushiol, acrylate soft monomer, acrylate hard monomer, initiator, emulsifier, sodium bicarbonate and water through seed emulsion prepared by polymerization. The functional monomer urushiol has multiple functional groups and is also an emulsifier. A small amount of it is introduced into the acrylate emulsion system, and the latex of polyacrylate particles containing linear bridges is formed through polymerization reaction, so that the propionate latex film The adhesion and hardness can be raised from grade 6 and B to grade 2 and 3H respectively. The latex of the invention has good stability, and the use of the renewable resource urushiol as a modifier also makes the acrylate latex more green and environment-friendly.

Description

technical field [0001] The invention relates to an acrylate latex, in particular to an acrylate latex with bridge particles. The invention belongs to the field of synthetic polymer coatings. Background technique [0002] Acrylate latex is widely used in adhesives, coatings and other fields due to its excellent weather resistance, chemical resistance and gloss and color retention, but it also has certain limitations, such as poor water resistance, hardness , low adhesion, etc. Therefore, the modification of acrylate latex is highly valued by scholars. At present, modification methods are mainly used to improve its performance, such as organic fluorine modification, cross-linking modification, nano particle modification, etc. The patent with the publication number CN102766241A discloses a preparation method of a core-shell structure nano-silica / polyacrylate emulsion. The nano-silica polyacrylate emulsion particles have the characteristics of low emulsifier, obvious core-sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F220/14C08F2/26C08F2/28
CPCC08F2/26C08F2/28C08F220/14C08F220/18C08F220/1804C08F220/1802
Inventor 杨建红沈琴
Owner CHANGZHOU UNIV