Hydroxyalkyl cationic guar gum and its preparation method and application

A hydroxyalkyl cation and a technology for preparing hydroxyalkyl cation are applied in the directions of adding non-fiber pulp, textile and paper making, fiber raw material processing, etc., and can solve the problems of no disclosed method, low degree of product substitution, complex synthesis steps, etc., To achieve the effect of reducing energy consumption, shortening reaction time and shortening reaction cycle
CN1318694CInactive Publication Date: 2007-05-30SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2007-05-30
Estimated Expiration
Not applicable ยท inactive patent
Patent Text Reader

Abstract

A process for preparing the cationic hydroxyalkyl guar gum includes such steps as dispersing the raw powder of guar gum in the aqueous solution of low-carbon alcohol, adding high-alkaline catalyst, immersing, adding cationic etherifying agent, cationic graft reaction, adding phase-transfer catalyst and alkoxy etherifying agent, hydro-xyalkylating reaction, neutralizing and filtering. It can be used as the retention aid or filter aid of paper pulp.
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Description

technical field

[0001] The invention relates to the field of retention and drainage aids for paper pulp, specifically uses guar gum as a raw material to prepare waste paper pulp, wood pulp and straw pulp systems and retention and drainage aids in the process of making high-grade functional paper, especially relates to hydroxyalkyl cations Guar gum one-step slurry preparation method. Background technique

[0002] At present, modified starch and cationic polyacrylamide (CPAM) are generally used as retention and drainage aids in the paper industry, but domestic starch raw materials come from different sources, there are many types, and the proportions of amylose and amylopectin are different, which seriously affects its modification. The stability of product quality limits its popularization and application. Larger domestic paper mills had to use wet-end additives produced by large foreign companies, resulting in increased paper costs. On the other hand, cationic polyacrylami...

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
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