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Meorient Import & Export Co.LTD
China - Hangzhou
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Nearest Port
Hangzhou,Shanghai
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5-10人
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USD,CNY
Average Lead Time
45 Day(s)
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Product Specifications
--Product Description
1. Products of the chemical and physical shape
Product name | Hydroxy propyl methyl cellulose (HPMC) |
Appearance | white or white-like fibrous or granular powder; odorless |
Solubility | HPMC can not dissolve in grain alcohol, aether and acetone without water in them and can dissolve into clear or slight feculent colloidal solution, also dissolve into some organic solvents and the mixed solvent of water and organic solvent |
Granularity | 100 mesh sieve pass rate > 98.5%; 80 mesh sieve pass rate is 100%. |
Apparent density | 0.30 - 0.70 g/cm3, density: 1.26 -1.31g/cm3 |
2. Product uses
HPMC can be used as thickening agent, dispersant emulsifying agent and film-forming agent
etc. Industrial grade products are well used in household chemicals, electronics synthetic rubber building and paint
etc. Industrial grade products are well used in household chemicals, electronics synthetic rubber building and paint
(1). Suspension polymerization
In synthetic rubber production, such as polrvinyl chloride (PVC) polyvinylidene chloride and other copolymers, suspension
polymerization is the most used process and hydrophobic monomer must stably suspend in water. As a water-soluble polymer, HPMC has excellent surface activity, which can be used as colloid protecting agent and prevent polymer particles from condensation.Moreover; HPMC is water-soluble polymer, but it is also slightly soluble in hydrophobic monomer and increases porous of monomer for polymer particles production, so it can provide a capability of polymers to remove residual monomer and improve absorption plasticizer
In synthetic rubber production, such as polrvinyl chloride (PVC) polyvinylidene chloride and other copolymers, suspension
polymerization is the most used process and hydrophobic monomer must stably suspend in water. As a water-soluble polymer, HPMC has excellent surface activity, which can be used as colloid protecting agent and prevent polymer particles from condensation.Moreover; HPMC is water-soluble polymer, but it is also slightly soluble in hydrophobic monomer and increases porous of monomer for polymer particles production, so it can provide a capability of polymers to remove residual monomer and improve absorption plasticizer
(2). For the prescription of construction material, it can be used
1) binding agent and joint mixture of gypsum-based adhesive tape;
2) cement-base tiles & bricks and basic bonding
3) gypsum plate-based stucco;
4) cement-based stucco constructure;
5) the formulas of paint and paint remover.
2) cement-base tiles & bricks and basic bonding
3) gypsum plate-based stucco;
4) cement-based stucco constructure;
5) the formulas of paint and paint remover.
3.The characteristics of the product
(1).Salt resistance: HPMC is non-ionic cellulose ether, not polyelectrolyte, so it is relatively stable in aqueous solutions when
metal salt or organic electrolyte is available, but excessive electrolyte can produce gel and sediment.
(2).Surface activity: HPMC solution has the function of surface activity, which can be used as colloid protecting agent, emulsifying agent and dispersant.
(3). Thermal gelation: HPMC solution can become .opaque and produce gel and sediment when it is heated to a certain temperature,but it will be restored to its initial solution state during continuous cooling. The temperature that forms gel and sediment mainly depends on its type, concentration and heating rate.
(4). PH stability: acid or alkaline conditions almost cannot affect the viscosity of HPMC solution, and PH value is relatively
stable in the range of 3.0-11.0
(5). Water retentivity: HPMC is a kind of water preserving agent with high efficiency. It is widely used in ceramics, building
material and many other aspects.
(6). Cohesiveness: as a king of cementing material with high property, HPMC is used for paint, paper making, tobacco products and ceramics products.
(1).Salt resistance: HPMC is non-ionic cellulose ether, not polyelectrolyte, so it is relatively stable in aqueous solutions when
metal salt or organic electrolyte is available, but excessive electrolyte can produce gel and sediment.
(2).Surface activity: HPMC solution has the function of surface activity, which can be used as colloid protecting agent, emulsifying agent and dispersant.
(3). Thermal gelation: HPMC solution can become .opaque and produce gel and sediment when it is heated to a certain temperature,but it will be restored to its initial solution state during continuous cooling. The temperature that forms gel and sediment mainly depends on its type, concentration and heating rate.
(4). PH stability: acid or alkaline conditions almost cannot affect the viscosity of HPMC solution, and PH value is relatively
stable in the range of 3.0-11.0
(5). Water retentivity: HPMC is a kind of water preserving agent with high efficiency. It is widely used in ceramics, building
material and many other aspects.
(6). Cohesiveness: as a king of cementing material with high property, HPMC is used for paint, paper making, tobacco products and ceramics products.
4.The use of the product
When HPMC products are directly added to water, condensation appears, and then dissolves. However, it takes a long time and difficult for dissolution. According to the usage, the client can choose the most convenient approach from the following three suggestions for dissolution methods:
(1). Hot water method: add the amount of 1/3 or 2/3 water needed in the container, heat to over 80°℃. As not dissolve in the hot water, HPMC is distributed evenly in the hot water at the beginning of dissolution; add remaining cold water or ice water into hot-water slurry, and then stir and cool it.
(2). Power fixed method: HPMC powder particles and equivalent or even larger amount of other power can be dispersed well by dry-blending, then dissolve it with water. At the moment, HPMC can dissolve but not condensate
(3). Organic solvent wetting method: pour HPMC into organic solvent. For example, alcohol, glycol or oil is pre-dispersed or wetted, then dissolve it with water; HPMC also can be smoothly dissolved.
When HPMC products are directly added to water, condensation appears, and then dissolves. However, it takes a long time and difficult for dissolution. According to the usage, the client can choose the most convenient approach from the following three suggestions for dissolution methods:
(1). Hot water method: add the amount of 1/3 or 2/3 water needed in the container, heat to over 80°℃. As not dissolve in the hot water, HPMC is distributed evenly in the hot water at the beginning of dissolution; add remaining cold water or ice water into hot-water slurry, and then stir and cool it.
(2). Power fixed method: HPMC powder particles and equivalent or even larger amount of other power can be dispersed well by dry-blending, then dissolve it with water. At the moment, HPMC can dissolve but not condensate
(3). Organic solvent wetting method: pour HPMC into organic solvent. For example, alcohol, glycol or oil is pre-dispersed or wetted, then dissolve it with water; HPMC also can be smoothly dissolved.
5.Product notes
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