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Hydroxypropyl methylcellulose is a kind of non-ionic cellulose mixed ether. Unlike ionic methyl carboxymethyl cellulose mixed ether, it does not react with heavy metals. Due to the different ratios of methoxyl content and hydroxypropyl content in hydroxypropyl methylcellulose and different viscos...Read more »
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Hydroxypropyl methylcellulose (INN name: Hypromellose), also simplified as hypromellose (hydroxypropyl methylcellulose, abbreviated as HPMC), is a variety of nonionic cellulose mixed ethers. It is a semi-synthetic, inactive, viscoelastic polymer commonly used as a lubricant in ophthalmology, or a...Read more »
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At present, the mature raw materials of plant capsules are mainly hydroxypropyl methylcellulose (HPMC) and pullulan, and hydroxypropyl starch is also used as raw materials. Since the beginning of the 2010s, HPMC has been applied in the Chinese plant capsule manufacturing industry, and based on it...Read more »
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test methods Method name: hypromellose—determination of hydroxypropoxy group—determination of hydroxypropoxy group Scope of application: This method uses the hydroxypropoxy determination method to determine the content of hydroxypropoxy in hypromellose. This method is applicable to hy...Read more »
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Due to the structural differences in market demand for cellulose ether, companies with different strengths and weaknesses can coexist. In view of the obvious structural differentiation of market demand, domestic cellulose ether manufacturers have adopted differentiated competition strategies base...Read more »
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Development status of HPMC production technology and process of hydroxypropyl methyl cellulose in China Hydroxypropyl methyl cellulose HPMC to the current domestic production is given priority to with liquid phase method technology, this technology is represented by wuxi chemical industry researc...Read more »
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There are many kinds of plant raw materials, but their basic composition has little difference, mainly composed of sugar and non-sugar. . Different plant raw materials have different contents of each component. The following briefly introduces the three main components of plant raw materials: Cel...Read more »
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Coating additives are used in a small amount in coatings, but they can significantly improve the performance of coatings, and have become an indispensable part of coatings. Thickener is a kind of rheological additive, which can not only thicken the coating and prevent sagging during construction,...Read more »
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01 Slow dry and stick back After the paint is brushed, the paint film does not dry for more than the specified time, which is called slow drying. If the paint film has been formed, but there is still a sticky finger phenomenon, it is called back sticking. Causes: 1. The paint film applied by brus...Read more »
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The rubber powder is made of high temperature, high pressure, spray drying and homopolymerization with a variety of active-enhancing micropowders, which can significantly improve the bonding ability and tensile strength of the mortar. , outstanding heat aging performance, simple ingredients, easy...Read more »
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Hydroxyethyl Cellulose Ether Hydroxyethyl cellulose ether, a non-ionic surface active substance, is a commonly used cellulose ether organic water-based ink thickener. It is a water-soluble non-ionic compound and has good thickening ability to water. It has many characteristics such as thickening,...Read more »
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In the process of debugging and using glazes, in addition to meeting specific decorative effects and performance indicators, they must also meet the most basic process requirements. We list and discuss the two most common problems in the process of using glazes. 1. The performance of glaze slurry...Read more »