Preparation method of sodium carboxymethyl cellulose for food

A technology of sodium carboxymethyl cellulose and cellulose, which is applied in the field of polymer chemistry, can solve the problems of poor performance of cellulose pulp or wood pulp cellulose, high price of refined cotton raw materials, poor product replacement uniformity, etc., and achieves preparation The method is simple, the operation is convenient, and the effect of reducing the total production cost
CN101455286AInactive Publication Date: 2009-06-17上海长光企业发展有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
上海长光企业发展有限公司
Publication Date
2009-06-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a food sodium carboxymethylcellulose preparation method, which includes: principally adding a mixed cellulosic material composed of 100 parts of wood pulp and purified cotton with a mixing ratio of 0.25-1.5:1, ethanol solvent and sodium hydroxide aqueous solution into a kneader, performing quaternization for 50-100 minutes under the mixing condition of 20-40 EDG C, and then respectively slowly adding chloroacetic acid ethanol solution and sodium hydrate aqueous solution, and performing etherifying response for 40-100 minutes under the mixing condition of 75-80 EDG C, and then cooling down for discharging; preparing sodium carboxymethylcellulose by using acetic acid to neutralize the obtained material, and simultaneously using ethanol aqueous solution for washing twice, adding aqueous hydrogen peroxide solution once or twice at the same time of washing and the other steps. The preparation method has simple method, low-cost, high yield, convenient operation; its products have lower viscosity, low prices, and widely application in various types of food and drinks as a stabilizer of emulsion and suspension, playing a thickening role.
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Description

technical field

[0001] The invention relates to the technical field of polymer chemistry, and mainly relates to a preparation method of sodium carboxymethyl cellulose for food. Background technique

[0002] Sodium carboxymethyl cellulose, referred to as CMC, is a water-soluble ionic ether obtained by chemical modification with natural cellulose as the basic raw material. Its aqueous solution has the functions of thickening, bonding film, maintaining moisture, emulsifying and suspending. With the continuous improvement of CMC quality in the market, the different requirements for CMC viscosity make it gradually divided into high, medium, low, ultra-low, etc. Various models in different viscosity ranges. Ultra-low viscosity CMC products are mainly used in food, beverage, textile, paper and other industries.

[0003] At present, the industrial production of CMC mainly has the following three methods: water-based method, solvent method and solution method.

[0004] The water-c...

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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