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Email: info@carboxy-methyl-cellulose.com 

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Factors Affecting The Purity Of Hydroxypropyl Methyl Cellulose

In building thermal insulation mortar, the purity of hydroxypropyl methyl cellulose directly affects the quality assurance of engineering construction. What are the factors that affect the purity of hydroxypropyl methyl cellulose? Gomes chemicals to take you to this question.

In the HPMC production process, the residual oxygen in the reactor causes hydroxypropyl methyl cellulose degradation and molecular weight reduction, but the residual oxygen is limited, so long as the broken molecules are reconnected, it is not very difficult. However, the rate of water saturation is also related to the content of hydroxypropyl group. Some factories only want to reduce costs and prices, and do not want to increase the content of hydroxypropyl, so the quality can not reach the level of similar products. The water retention rate of hydroxypropyl methyl cellulose and hydroxypropyl have a great relationship, but for the whole reaction process also determines its water retention rate, alkalization effect, methyl chloride and propylene oxide ratio, concentration and water with refined cotton alkali ratio determines the product performance.

The quality of the raw material. The effect of alkalinity. The effect of process proportioning, solvent proportioning and neutralization, some hydroxypropyl methyl cellulose dissolve after it is very turbid like adding milk, some are milky white, others are yellow and some are clear and transparent. If you want to solve it, you can adjust it from the above points. Sometimes acetic acid can seriously affect the transmittance. Acetic acid is best diluted. The most important influence is whether the agitation is uniform or not, and whether the system proportion is stable (some material moisture and content is unstable, such as solvent used for recycling), in fact, many factors are affecting. The production should be stable when the equipment is stable and the operator is trained skillfully. The transmittance of the substituent group is not more than 2%, and the substituent uniformity of the substituent group should be controlled. It will be better to replace the uniform and the light transmittance.

Hangzhou Hongbo New Materials Co., Ltd 

Address: Yushan Zone, Fuyang, Zhejiang Province, China.

Contact Person : Mison WANG

Email: info@carboxy-methyl-cellulose.com 

Mobile: 86-15990171382


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