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Polyanion cellulose preparation method

A polyanion and cellulose technology, applied in the field of fine chemicals, can solve the problems of incomplete alkalization and etherification, unsatisfactory product performance indicators, low production efficiency, etc., and achieve the effects of superior effect, superior water retention performance and improved production efficiency

Active Publication Date: 2010-02-24
SHANDONG YITENG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, on the basis of a large number of experiments, the inventor found that on the basis of the traditional preparation process of polyanionic cellulose, the use of "ternary composite solvent" and "multi-step slurry method" can overcome the alkali Incomplete etherification, product performance indicators do not meet the requirements, technical problems of low production efficiency

Method used

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  • Polyanion cellulose preparation method
  • Polyanion cellulose preparation method
  • Polyanion cellulose preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Mix the following components to prepare a ternary composite solvent for the preparation of polyanionic cellulose: A, isopropanol (concentration ≥ 98%), 87%; B, ethanol (concentration ≥ 95%), 10%; C, Soft water (hardness≤3), 3%.

Embodiment 2

[0048] The following components are mixed to prepare a ternary composite solvent for preparing polyanionic cellulose: A, isopropanol, 71%; B, ethanol, 20%; C, soft water, 9%.

Embodiment 3

[0050] The following components are mixed to prepare a ternary composite solvent for preparing polyanionic cellulose: A, isopropanol, 78%; B, ethanol, 14%; C, soft water, 8%.

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Abstract

The present invention discloses polyanionic cellulose with a special quality, the multi-step slurry process for preparing the polyanionic cellulose and the ternary complex solvent required. The complex solvent is composed of (A) from 71 percent to 87 percent by weight of isopropyl alcohol, (B) from 10 percent to 20 percent by weight of alcohol and from 71 percent to 87 percent by weight of the soft water. The multi-step slurry process for preparing the polyanionic cellulose has a more excellent technical effect on material economizing, time saving and the properties of product than the traditional one-step slurry process for preparing the polyanionic cellulose. Compared with the properties the product produced by the traditional method, the acid resistance is raised by more than 20 percent, and the viscosity is greatly improved. The polyanionic cellulose is widely used in the fields like petroleum, paint, detergent, building materials, textile industry, paper marking, medicines, foodstuff, etc.

Description

Technical field [0001] The invention belongs to the field of fine chemical industry, especially the ternary composite solvent of polyanionic cellulose (PAC), the multi-step slurry method for preparing polyanionic cellulose by using the solvent, and the polyanionic cellulose prepared by the method and its application in petroleum, Applications in coatings, detergents, building materials, textiles, papermaking, medicine, food and other fields. Background technique [0002] The cellulose derivative industry in my country started in the 1960s and has a history of more than 40 years. Among them, carboxymethyl cellulose (CMC) is the longest-produced and largest-scale cellulose derivative in China. Compared with foreign countries, there are too many cellulose ether production enterprises in my country, their production capacity is greater than demand, the enterprise scale and technical level are quite different, the scientific research investment is lacking, and the product update and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B11/00C08B1/08C08K5/05
Inventor 滕鸿儒刘庆秀刘廷盛李坤武家卫
Owner SHANDONG YITENG NEW MATERIAL CO LTD
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