Synthesis method of acroleic acids co-polymer for washing assistant

A kind of copolymer-like, synthetic method technology, applied in the direction of organic cleaning compositions, etc., can solve the problems of deposition, less than ideal washing effect, large amount of rinsing water and the like

Active Publication Date: 2009-02-11
广州星业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 4A zeolite widely used in phosphorus-free laundry detergent is not ideal in washing effect, and it is easy to deposit on the surface of the fabric, and the amount of water used for rinsing is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 200g of water, 0.003g of manganese sulfate and 30g of maleic anhydride to a 500g reactor, then neutralize with 61.2g of 40% sodium hydroxide solution, heat to 80°C, and then add 60g of acrylic acid dropwise into the reactor , 20g mass fraction are 50% 2-acrylamide-2-methylpropanesulfonic acid aqueous solution and 100g composite initiator, composite initiator is made up of 1g ammonium persulfate, 20g mass fraction is 50% hydrogen peroxide and 79g deionized water , the dropping time is 180 minutes, and the reaction temperature is 79-81°C.

Embodiment 2

[0015] Add 200g of water, 0.003g of manganese sulfate and 30g of maleic anhydride to a 500g reactor, then neutralize with 61.2g of a 40% sodium hydroxide solution, heat to 80°C, and then add 65g of acrylic acid dropwise into the reactor , 10g mass fraction are 50% 2-acrylamide-2-methylpropanesulfonic acid aqueous solution and 100g composite initiator, composite initiator is made up of 50% hydrogen peroxide and 79g deionized water by 1g ammonium persulfate, 20g mass fraction , the dropping time is 180 minutes, and the reaction temperature is 79-81°C.

Embodiment 3

[0017] Add 200g of water, 0.003g of manganese sulfate and 30g of maleic anhydride to a 500g reactor, then neutralize with 61.2g of 40% sodium hydroxide solution, heat to 80°C, and then drop 70g of acrylic acid into the reactor And 100g composite initiator, the composite initiator is made up of 1g ammonium persulfate, 20g mass fraction of 50% hydrogen peroxide and 79g deionized water, the dropping time is 180 minutes, and the reaction temperature is 79-81°C.

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Abstract

The invention relates to a method for synthesizing an acrylic copolymer and an application thereof in a detergent. The synthesis method of the copolymer is as follows: maleic anhydride is used as a subcoat and a few catalysts and right amount of water are added; alkali is added for neutralization. Comonomers such as acrylic acid (methacrylic acid), 2-acrylamido-2-methyl-propanesulfonic acid (AMPS), and the like, and an evocating agent are added in a dropwise manner. The dropwise time is 30-300 minutes and the reaction temperature ranges from 60 DEG C to 130 DEG C. The copolymer has comparatively high calcium dispersion force and calcium complexation value as well as good effect of assistance in cleaning, and the adding amount of the copolymer in the detergent is 0.1-20 percent.

Description

technical field [0001] The present invention relates to a method for synthesizing an acrylic copolymer for detergent builders. Background technique [0002] Detergent is one of the most widely used daily chemicals. It is of great significance to improve people's living standards to reduce the production cost of detergent, enhance the washing effect of detergent, and reduce environmental pollution. Currently, 4A zeolite, which is widely used in phosphorus-free laundry detergent, has an unsatisfactory washing effect, is easy to deposit on the surface of fabrics, and consumes a lot of water for rinsing. According to the Delphi cumulative integral prediction technology used by the British environmental protection authority, the impact of phosphate on the environment is 107 points, while that of 4A zeolite is 110 points. It can be seen that 4A zeolite also has a significant impact on the environment. Acrylic copolymer has a strong function of complexing calcium and magnesium ion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/02C08F220/54C11D3/37
Inventor 黄育苗孟巨光
Owner 广州星业科技股份有限公司
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