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What is instant hydroxypropyl methylcellulose HPMC?

November 25, 2021by admin0

What is instant hydroxypropyl methylcellulose HPMC?

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. At this time, the aqueous solution will be 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 type of 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 dissolution in a substantial sense , Its viscosity reaches the maximum value for more than 40 minutes. 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 methyl cellulose solves such a problem.

What products are mainly used for
Instant hydroxypropyl methyl cellulose disperses quickly in water (dispersion degree is 100%), 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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