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What Is Hypromellose?

Aug. 01, 2020

Hypromellose is a kind of non-ionic cellulose mixed ether. It is a semi-synthetic, inactive, viscoelastic polymer. It is often used in ophthalmology as a lubrication department, or as an excipient or excipient in oral medicine. It is commonly found in various types of commodities. As a food additive, hypromellose can play the following roles: emulsifier, thickener, suspending agent and substitute for animal gelatin.

Dissolution method

1. All models can be added to the material by dry mixing;

2. When it needs to be added directly to the aqueous solution at room temperature, it is best to use the cold water dispersion type, and it usually takes 10-90 minutes to thicken after adding;

3. For ordinary models, first stir and disperse with hot water, then add cold water to stir and cool to dissolve;

4. If agglomeration and wrapping occurs during dissolution, it is due to insufficient stirring or the normal type is directly added to cold water. At this time, it should be stirred quickly.

5. If bubbles are generated during dissolution, they can be left to stand for 2-12 hours (the specific time is determined by the consistency of the solution) or removed by vacuum, pressurization, etc., or an appropriate amount of defoamer can be added.

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Hypromellose

Application

Chemical Hpmc is used as thickener, dispersant, binder, excipient, oil resistant coating, filler, emulsifier and stabilizer in the textile industry. It is also widely used in synthetic resin, petrochemical, ceramic, paper, leather, medicine, food and cosmetics industries.

1. Construction industry: As a water-retaining agent and retarder of cement mortar, it makes the mortar pumpable. Used as a binder in plaster, plaster, putty powder or other building materials to improve spreadability and prolong operation time. It can be used as a paste tile, marble, plastic decoration, paste enhancer, and can reduce the amount of cement. The water retention properties of HPMC prevent the slurry from cracking due to drying too fast after application, and enhance the strength after hardening.

2. Ceramic manufacturing industry: widely used as a binder in the manufacturing of ceramic products.

3. Paint industry: As a thickener, dispersant and stabilizer in the paint industry, it has good compatibility in water or organic solvents. As a paint remover.

4. Ink printing: As a thickener, dispersant and stabilizer in the ink industry, it has good compatibility in water or organic solvents.

5. Plastic: used as mold release agent, softener, lubricant, etc.

6. Polyvinyl chloride: Used as a dispersant in the production of polyvinyl chloride, and is the main auxiliary agent for the preparation of PVC by suspension polymerization.

7. Others: This product is also widely used in leather, paper products, fruit and vegetable preservation and textile industries.

8. Pharmaceutical industry: coating materials; film materials; rate-controlling polymer materials for slow-release preparations; stabilizers; suspending agents; tablet binders; viscosity increasing agents.

 

 

 


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