Views:7 Author:Site Editor Publish Time: 2019-11-28 Origin:Site
HPMC is widely used in building materials, coatings, synthetic materials, ceramics, medicine, food, textile, agriculture, cosmetics, tobacco and other industries. Domestic HPMC is practically building grade. In building grade, putty powder is used In a large amount, about 90% of which is used for putty powder, and the rest is used for cement mortar and glue.The content and viscosity of hydroxypropyl group are two indicators that most users are concerned about. High hydroxypropyl content, water retention is generally better. Viscosity, water retention, relative (rather than absolute) is better, and viscous, better in cement mortar.HPMC is a multi-functional medicinal auxiliary, can be used as thickener, dispersant, emulsifier and film forming agent.As a film coating and adhesive in oral solid preparation, it can significantly improve the stability and dissolution of drugs, and enhance the water-resistance of tablets.
It can also be used as suspension aid for suspension, as matrix material for ophthalmic preparation, as skeleton material for hydrophilic gel skeleton sustained release tablets and gastric floating tablets.HPMC, combined with other macromolecular compounds or colloidal drugs, can prevent the separation of water or ethanol from transparent colloidal drugs, and has the effect of water retention.
HPMC can also be used as thickener and emulsifier in food industry and daily chemical industry to improve the rheological properties of products.
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Hydroxypropyl methyl cellulose is divided into two kinds of ordinary hot soluble cold water instantly soluble. Hydroxypropyl methyl cellulose uses are 1, Gypsum series In the gypsum series of products, cellulose ethers are mainly used to retain water and increase smoothness. Together they play a cer
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