Polycarboxylic acid polymer emulsifier and preparation method thereof

A polymer emulsifier, polycarboxylic acid technology, applied in the direction of botany equipment and methods, biocides, biocides, etc., can solve the problem of less application of small molecule emulsifiers, polymer emulsifiers, etc., to achieve excellent performance, good The effect of stability

Active Publication Date: 2020-06-12
中化化工科学技术研究总院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the shortage of small molecule emulsifiers used in the prior art and the problem that existing polymer emulsifiers are rarely used in the field of pesticides, the present invention provides a polypropylene carboxylic acid polymer emulsifier and a preparation method thereof

Method used

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  • Polycarboxylic acid polymer emulsifier and preparation method thereof
  • Polycarboxylic acid polymer emulsifier and preparation method thereof
  • Polycarboxylic acid polymer emulsifier and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Polycarboxylic acid polymer emulsifier and its preparation method: add 100 parts of water and 50 parts of isopropanol into the reactor, and heat while stirring; when the temperature of the solution in the reactor rises to 70°C, drop 10 Parts of acrylic acid, 15 parts of isooctyl acrylate and 30 parts of initiator ammonium persulfate solution were added dropwise within 1 hour, and then incubated for 2 hours; after the insulation reaction was completed, the temperature was cooled to room temperature while stirring, and the pH was adjusted with sodium hydroxide solution to 7.2, that is, the polymer emulsifier is prepared.

[0031] The weight-average relative molecular weight of the polymer emulsifier detected by GPC is 38800.

Embodiment 2

[0033] Polycarboxylate polymer emulsifier and its preparation method: Add 100 parts of water and 50 parts of isopropanol into the reactor, and heat while stirring; when the temperature of the solution in the reactor rises to 80°C, drop 15 Parts of acrylic acid, 20 parts of isooctyl acrylate and 30 parts of initiator ammonium persulfate solution were added dropwise within 1 hour, and then incubated for 2 hours; after the insulation reaction was completed, the temperature was cooled to room temperature while stirring, and the pH was adjusted with sodium hydroxide solution to 7.2, that is, the polymer emulsifier is prepared.

[0034] The weight-average relative molecular weight of the polymer emulsifier detected by GPC is 40600.

Embodiment 3

[0036] Polycarboxylate polymer emulsifier and its preparation method: add 100 parts of water and 50 parts of isopropanol into the reactor, heat while stirring; when the temperature of the solution in the reactor rises to 85°C, add 15 parts dropwise Parts of acrylic acid, 20 parts of isooctyl acrylate and 30 parts of initiator ammonium persulfate solution were added dropwise within 1.5 hours, and then incubated for 2 hours; after the insulation reaction was completed, the temperature was cooled to room temperature while stirring, and the pH was adjusted with sodium hydroxide solution to 7.2, that is, the polymer emulsifier is prepared.

[0037] The weight-average relative molecular weight of the polymer emulsifier detected by GPC is 41500.

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Abstract

The invention relates to a polycarboxylic acid polymer emulsifier and a preparation method thereof, and belongs to the technical field of polymer material preparation. The polycarboxylic acid polymeremulsifier is prepared from the following components in parts by weight: 10-70 parts of an acrylic monomer, 5-50 parts of an acrylate monomer, 20-100 parts of alcohols, 10-40 parts of an initiator, 1-40 parts of alkali and 50-200 parts of water; wherein the molar mass ratio of the acrylic monomer to the acrylate monomer is (1-6):(1-5). According to the invention, the HLB value of the emulsifier isadjusted by controlling the addition ratio of the acrylic monomer to the acrylate monomer, so that the method is simple and convenient, and the emulsifier is endowed with excellent performance, and the prepared emulsion has good stability.

Description

technical field [0001] The invention relates to the technical field of polymer material preparation, and specifically provides a polycarboxylic acid polymer emulsifier and a preparation method thereof. Background technique [0002] An emulsifier is a substance used to prepare an emulsion and give it a minimum degree of stability, and is an essential component. Common emulsifiers are small molecule emulsifiers, mainly nonionic emulsifiers such as alkylphenol polyoxyethylene ethers and fatty alcohol polyoxyethylene ethers, and anionic emulsifiers such as alkylbenzene sulfonates. Polymer emulsifiers generally refer to polymer compounds with a relative molecular mass of several thousand or more and surface-active functions. According to the source, polymer surfactant compounds can be divided into natural polymer surfactants, natural modified (or semi-synthetic) polymer surfactants and chemically synthesized polymer surfactants. Natural polymer surfactants exist in animals and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/06A01N25/04A01N43/70A01P13/00
CPCC08F220/18C08F220/06A01N25/04A01N43/70
Inventor 朱建秀卢忠利张宗俭
Owner 中化化工科学技术研究总院有限公司
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