Preferred hydroxypropyl methyl cellulose ethers of high quality manufacturers

Hydroxypropyl methyl cellulose functions and parameters: instead of a characteristic group characteristics of the so-called groups, mainly refers to hydroxypropyl methylcellulose in place group volume or size. Instead of the base of the volume, the more easy to make macromolecular chains separated by spacer molecules increases, hydrogen reduction, instead of dissolving the desired reduced accordingly. On the contrary, if the volume of the smaller group HPMC instead, want to give the desired solubility, the demand for more instead, that the higher the substitution degree hydroxypropyl methylcellulose demand. Because cellulose occurs when replaced along with Vice reaction occurs and follow DS increased, Vice reaction also increases, and therefore a corresponding increase in cost of repercussions reagents. Therefore, that the use of a large group of hydroxypropyl methylcellulose instead of to some cheap. However, it should be noted that in place of the low, easy to cause instead of uniform. Hydroxypropyl methyl cellulose, hydroxypropyl methyl cellulose Profile is one water-soluble polymer, its water-soluble and methoxy content in HPMC, and when low levels of a methoxy group when it can be dissolved alkali and no thermodynamic gel point. During follow-methoxy-added content, hydroxypropyl methyl cellulose to water-swellable even more active, and can dissolve in dilute alkali, weak base. Assumed methoxy content of> 38%, can be dissolved in water, and also soluble in a halogenated hydrocarbon. But when the periodate participate HPMC, HPMC will be active relax in water, then derails caking insoluble substances. This is mainly due to the high sugar yuan periodic acid having lax in reason ortho dihydroxy. Hydroxypropyl methyl cellulose and useful features: hydroxypropyl methyl cellulose products 1, tile adhesives with high water retention may not necessarily pre-soaked or wet tile and base, as it can significantly advancing its sticky knot strength, along with the slurry can be long construction period, fine, uniform, construction convenient, it has a superior anti-metastatic Run. 2, caulks, grouts hpmc added to make this a slurry having excellent edge adhesion, shortening its low and high abrasion resistance to protect the underlying material from mechanical abrasion and prevent the slurry overflow to affect the entire building brought. Hydroxypropyl methyl cellulose: http: //www.tianhe99.cc hydroxypropyl methyl cellulose: http: //www.xianweisumi.cn hydroxypropyl methyl cellulose: http: //www.tianhe99. cn