（HPMC）
Hydroxypropyl methyl cellulose is formed by etherification of high purity fiber in alkaline condition. Mainly used in the production of PVC dispersant, in addition to other petrochemical, paint, building materials, paint removal agent, paper making, cosmetics and other products as a thickener, stabilizer, emulsifier, film forming agent.
Hydroxypropyl Methyl Cellulose: HPMC or MHPC
Aliases: hydroxypropyl methyl cellulose; Cellulose hydroxypropyl methyl ether;
Hypromellose, Cellulose,
Cellulose hydroxypropyl methyl ether; Cellulose hydroxypropyl methyl ether;
Appearance: white or almost white powder.
Granularity; The pass rate of 100 mesh was more than 98.5%. The pass rate of 80 mesh is more than 100%.
Carbonization temperature: 280-300℃
Apparent density: 0.25-0.70/cm3(usually around 0.5g/cm3), 5, specific gravity 1.26-1.31.
Color changing temperature: 190-200℃
Surface tension: 42-56dyn/cm in 2% aqueous solution.
The physical and chemical properties
Soluble in water and some solvents, such as appropriate proportion of ethanol/water, propanol/water, trichloroethane, etc.
Aqueous solution has surface activity. High transparency,
Stable performance, different specifications of product gel temperature is different, solubility changes with the viscosity, the lower the viscosity, the greater the solubility.
Different specifications of HPMC performance has a certain difference 14, HPMC in water solution is not affected by PH value.
The surface activity of HPMC decreased with the decrease of methoxyl content, the increase of gel point and the decrease of water solubility.
HPMC also has thickening ability, salt resistance low ash powder, PH stability, water retention, dimensional stability, excellent film forming, as well as a wide range of resistance to enzyme, dispersity and bonding characteristics.
Molecular formula
Product use
This product is industrial grade HPMC, mainly used for PVC production as a dispersant, suspension polymerization preparation of PVC main additives. In addition, in other petrochemical, paint, building materials, paint removal agent, agricultural chemicals, printing ink, textile printing and dyeing, ceramics, paper making, cosmetics and other products in the production of thickening agent, stabilizer, emulsifier, excipating agent, water retention agent, film forming agent. The application in synthetic resin can make the products have the characteristics of regular particles, loose, appropriate specific gravity, excellent processing performance, so as to basically replace gelatin and polyvinyl alcohol as dispersants. In addition, in the construction process of the building industry, mainly used for building walls, stucco, caulking and other mechanized construction; Especially in adornment sex construction, use to do adornment of stickup ceramic tile, marble, plastic, stickup intensity is tall, still can reduce cement dosage. Used as thickener in coating industry, can make the layer bright and delicate, do not take off the powder, improve leveling performance, etc.
Viscosity specifications
model
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Viscosity specifications（mPa.s）
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JH-40000S
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20000-60000
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JH-75000S
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60000-85000
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JH-100000S
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85000-125000
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JH-150000S
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125000-175000
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JH-200000S
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175000-210000
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Dissolution method
Take the required amount of water, place it in a container, and gradually add it while stirring slowly. The cellulose floats on the surface of the water at first, but gradually disperses to form a uniform slurry, which dissolves faster if you use hot water
Matters needing attention
All kinds of viscosity (40 thousand, 75 thousand, 100 thousand, 150 thousand, 200 thousand), lined with polyethylene film packed paper plastic bag in one, net weight of each bag: 25kg. In storage and transportation process to prevent sun and rain and moisture.
Products indicators
indicators
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methoxy（%）
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hydroxypropyl（%）
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Gel temperature
（℃）
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nsoluble substance in water（%）
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Dry weight loss
（%）
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PH
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residue（%）
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Heavy metal（ppm）
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lead（ppm）
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JH40000S/75000S/100000S
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28.0-30.0
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7.0-12.0
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58-64
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≤0.5
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≤5
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4.0-8.0（1%溶解2.5℃）
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≤1.0
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20
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≤ 10
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JH150000S
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27.0-30.0
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4.0-7.5
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62-68
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JH150000S
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19.0-24.0
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4.0-12.0
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70-90
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