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Email: info@carboxy-methyl-cellulose.com 

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Synthesis Of Hydroxypropyl Methyl Cellulose (HPMC) By Etherification

Hydroxypropyl methyl cellulose (HPMC), cellulose (raw material, can be refined cotton, wood pulp can also be, in the process of alkaline or alkaline the crushing is very necessary, is crushed by mechanical energy to destroy the cellulose material aggregation structure, to reduce the crystallinity and degree of polymerization, increases the surface area to improve the response, reagent of cellulose molecules of glucose ring based on three hydroxyl accessibility and chemical reaction ability.

Hydroxypropyl methyl cellulose (HPMC) as substrates for lipid production, to achieve full sugar utilization, improve the utilization rate of raw materials, reduce the residual amount of substrate in fermentation liquid, reduce the cost of wastewater treatment, the properties of hydroxypropyl methyl cellulose for batch, fed batch, and continuous fermentation process were optimized. To avoid a series of problems in the control of culture medium and the dilution rate; but also conducive to the regulation of fermentation process. The hydroxypropyl methyl cellulose (HPMC) with the performance of other water soluble ether can be used for similar, latex paint and water soluble resin coating composition as film-forming agent, thickener, emulsifier and stabilizer, the coating has excellent wear resistance, uniform coating and adhesion, and improved surface the pH stability and tension, compatibility of metallic pigment.

Hydroxypropyl methyl cellulose (HPMC) has a good effect as a white water based polyvinyl acetate thickener. The degree of substitution of cellulose ether increased and the resistance to bacteria was also enhanced.

Although the principle of etherification synthesis of hydroxypropyl methyl cellulose (HPMC) is not complex, it has been converted to alkali, comminution and alkalization of raw materials. Etherification, solvent recovery, centrifugal separation, washing and drying are related to a large number of technical key and rich knowledge.

For different varieties of products, the environment has the most recent control conditions, such as temperature, time, pressure and flow control. The auxiliary equipment and the control instrument are the stable quality of the product and the reliable guarantee of the production system.

Hangzhou Hongbo New Materials Co., Ltd 

Contact Person : Mison WANG

Email: info@carboxy-methyl-cellulose.com 

 Mobile: 86-15990171382

 

 

 


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