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What is instant hydroxypropyl methyl cellulose HPMC and its characteristics and applications

December 2, 2021by admin0

Quick-dissolving hydroxypropyl methyl cellulose ether HPMC is designed for liquid products. The surface of HPMC hydroxypropyl methyl cellulose ether is treated with glyoxal under certain temperature and pH conditions. The hydroxypropyl methyl cellulose ether treated in this way is only dispersed in neutral cold water without swelling and viscosity, which can delay the swelling effect. At this time, the aqueous solution is stirred for 5-10 minutes or the When the solution environment (PH value) is adjusted to alkaline, the hydroxypropyl methyl cellulose ether begins to swell to produce viscosity. This type of surface treatment is usually referred to as the instant type.

What are the characteristics

The fast-dissolving hydroxypropyl methylcellulose HPMC is characterized by its rapid diffusion in cold water when it encounters cold water, but it takes time for its viscosity to rise, because it only diffuses in water in the early stage, not dissolving in a substantial sense , Its viscosity reaches the maximum for about forty minutes or more. The advantage of this is that it is used in a specific industry and does not mix with dry powder, or it needs to be dissolved and used and hot water cannot be used due to equipment conditions. , Instant hydroxypropyl methylcellulose solves such a problem.
What products are mainly used for

The instant hydroxypropyl methylcellulose disperses quickly in water (100% dispersion), dissolves quickly, and does not clump, especially the late colloidal solution has high transparency (up to 95%) and large consistency, which solves the problem in practical applications. The contract has expanded the application fields, such as the application in construction glue, the application in the compound liquid admixture, and the special fields such as daily chemical washing.

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