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building material grade HPMC
building material grade HPMC

building material grade HPMC is widely used as thickener, adhesive, water preserving agent, film-forming agent in construction building material grade HPMC

Hydroxypropyl Methyl Cellulose (HPMC) is widel used as thickener, adhesive, water preserving agent, film-forming agent in construction, building materials, dispersion coating, wallpaper paste, polymerization aids, leathers, printing ink and paper making etc.l also used in petroleum drilling and daily-use chemicals

1.Appearance: HPMC is white or similar to white fiber or granular powder; odorless . 2.Properties: almost insoluble in ethanol, ether and acetone; quickly dispersed in 80-90°C water; aqueous solution is very stable in room temperature; has good wetting/dispersing/adheisve/thickening/emlusifying/water preserving/film-forming properties; can prevent the infilration of grease; film formed has excellent flexibility and trransparency; has good compatibility with other emulsifier; easy salting-out. its solution is stable with PH 2-12. 3.Apparent density: 0.30-0.70g/cm3, density is 1.3g/cm3.

Technical index of HPMC

 

Index name

Model

KH60

KH65

KH75

MethoxyWT%

28.030.0

27.030.0

19.024.0

HydroxypropoxyWT%

7.012.0

4.07.5

4.012.0

Gelling temperature

58.064.0

62.068.0

70.090.0

MoistureWT%

≤5.0

Residue on ignitionWT%

≤1.0

PH Value1% solution , 25

5.07.5

Viscosity Standard2% solution , 20,NDJ-8S

NDJ-1 2% solution 20

B type Viscosimeter 2% solution 20

Nominal Viscosity(mPa.s)

Range

Nominal Viscosity(mPa.s)

Range

5

3-9

15000

13000-17000

1510-2020000

18000-22000

2520-3030000

23000-34000

5040-6040000

35000-45000

10080-12050000

46000-55000

400300-50060000

56000-64000

800700-90075000

65000-85000

15001200-200080000

75000-85000

40003500-450010

850000

80007000-9000150000

130000-180000

100009000-11000200000

180000 or more

Properties:

1.Appearance: HPMC is white or similar to white fiber or granular powder; odorless . 2.Properties: almost insoluble in ethanol, ether and acetone; quickly dispersed in 80-90 water; aqueous solution is very stable in room temperature; has good wetting/dispersing/adheisve/thickening/emlusifying/water preserving/film-forming properties; can prevent the infilration of grease; film formed has excellent flexibility and trransparency; has good compatibility with other emulsifier; easy salting-out. its solution is stable with PH 212. 3.Apparent density: 0.300.70g/cm3, density is 1.3g/cm3.

Dissolving process

HPMC will agglomerate when directly added to water and then dissolve. In this way it dissolves very slow and hard. Suggested methods as followers:1. In hot water.HPMC does not dissolve in hot water. The primary HPMC can be uniformly disperse in hot water. Then cool down in two ways:a) Add hot water in container and heated to over 70. Add HPMC gradually while slowly, stir. At the beginning, HPMC float on the top of water, then turns into slurry state stir and cool down.b) Add water in container to 1/3 or 2/3 of its content. Heated to over 70 add HPMC by sequence of a). Make it disperse to form slurry state. Add cool water or ice to the resideual content, stir and cool down the mixture.2. Powder combination.Mix HPMC with identical volume of other powder, disperses them sufficiently then add water to the

Application

It is widel used as thickener, adhesive, water preserving agent, film-forming agent in construction, building materials, dispersion coating, wallpaper paste, polymerization aids, leathers, printing ink and paper making etc.l also used in petroleum drilling and daily-use chemicals

Packing

Net wt 15kg or 20kgs in cardboard drum with PE lining or coated PP woven bag, stored indoors in dry and draughty place; avoid rain and sunlight during transporting

 

building material grade HPMC

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