Method for making polycarboxylic salt as detergent aids

A detergent builder and polycarboxylate technology, which is applied in the direction of organic detergent compositions, etc., can solve the problems of difficult rinsing of washing items, excessive algae reproduction, and large rinse water consumption, and achieve excellent washing aid function, low cost, The effect of short process route

Inactive Publication Date: 2005-05-18
宋广军
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current laundry detergents use sodium tripolyphosphate as a washing aid. After discharge, the algae in the water will multiply excessively, and a large area of ​​red tide will occur, which seriously pollutes the environment.
The 4A zeolite used in the current promotion of phosphorus-free washing powder is a white insoluble powder, and its deposition in water will also cause environmental degradation
Moreover, the washing items are not easy to rinse, and the water consumption for rinsing is very large
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. It can be seen that the pollution of 4A zeolite is more serious than that of sodium tripolyphosphate, and it is not an ideal. substitution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The production method of polycarboxylate as a washing aid: mix cornmeal with water, add catalyst before forming colloid, circulate through air or oxygen, keep the reactor in an aerobic state, and react at 60-150°C for 30 -420 minutes, from 30 minutes to 60 minutes, start to detect the complexing ability, reach the complexing calcium ability of 80-108mgCa / g, complete the reaction, and carry out dehydration treatment.

[0019] The catalyst is a mixture of one or several of zinc oxide, aluminum oxide, calcium oxide, magnesium oxide metal oxides and silicon dioxide non-metal oxides in any proportion, and the weight and number ratio of the added amount is It is starch:catalyst=100:0.01-1.

[0020] The dehydration method is to carry out thin film evaporation and vacuum distillation, and then dry.

Embodiment 2

[0022] The polycarboxylate is a carboxyl-containing polysaccharide formed by hydrolysis and oxidation of cornstarch under the action of a catalyst, wherein -CH on the starch ring 2 OH is oxidized to -COOH.

[0023] The catalyst is a mixture of one or several of zinc oxide, aluminum oxide, calcium oxide, magnesium oxide metal oxides and silicon dioxide non-metal oxides in any proportion, and the weight and number ratio of the added amount is It is starch:catalyst=100:0.01-1.

Embodiment 3

[0025] When the above-mentioned polycarboxylate as a washing aid is used as a washing aid, the weight and number ratio of the amount added to the amount of washing powder is 1-1.5: 4, and it is added to the washing powder to replace sodium tripolyphosphate and laundry detergent. The ratio of parts by weight of the powder is: washing powder 100: this product 20 or 25 or 30 or 35 or 40.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Preparation method of polycarboxylate as detergent builder and polycarboxylate. The phosphorus-free washing powder currently promoted uses 4A zeolite, which is a white insoluble powder, and its deposition in water will also cause environmental degradation. In the method of the invention, the cornmeal is mixed with water, added with a catalyst before forming a colloid, keeping the aerobic state, reacting at 60-150 for 30-420 minutes, detecting complexing ability, and performing dehydration treatment. The polycarboxylate is a carboxyl-containing polysaccharide formed by hydrolysis and oxidation of cornstarch under the action of a catalyst, wherein -CH on the starch ring 2 OH is oxidized to -COOH. The catalyst is a mixture of one or several of zinc oxide, aluminum oxide, calcium oxide, magnesium oxide metal oxides and non-metallic oxides of silicon dioxide in any proportion, and the weight and number ratio of the added amount is about 100%. :catalyst=100:0.01-1. This product is used as a substitute for phosphorus-containing additives in detergents. The effect is higher than that of phosphorus-containing additives, and the price is lower than that of phosphorus-containing additives.

Description

technical field [0001] The present invention relates to a polycarboxylate as a washing aid and a method for preparing the polycarboxylate. Background technique [0002] my country has a large population and is a big consumer of washing powder. Most of the current laundry detergents use sodium tripolyphosphate as a detergent aid. After the discharge, the algae in the water will multiply excessively, and a large area of ​​red tide will occur, seriously polluting the environment. The 4A zeolite used in the currently promoted non-phosphorus laundry detergent is a white insoluble powder, and its deposition in water will also cause environmental degradation. And washing article is difficult for rinsing, and the water consumption of rinsing is very large. 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. It can be seen ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08B31/00C11D3/37
Inventor 姜文勇郭宗文刘波
Owner 宋广军
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap