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Home   /   Product   /   Polyvinyl Alcohol PVOH®990E

Polyvinyl Alcohol PVOH®990E

LIWEI CHEMICAL CO. LTD

Polyvinyl Alcohol PVOH®990E
Overview
PVOH®990E is a fully hydrolyzed medium molecular weight polyvinyl alcohol (PVOH). Using the exclusive batch process which has advantages over other manufacturing methods,allows more efficient control over the degree of hydrolysis and particle size of the product.
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Specifications

Appearance

White granule

Total Solids wt%(min)

96.5

Degree of Hydrolysis (mole %)

99.0

Degree of polymerization

1750±15.0

pH value

5.0-7.0

 

 

 

 


Packing & Storage

Packing Our polyvinyl alcohol products are packed in craft paper bag. Net weight 12.5kgs or 20kgs if floccule, Net weight 25kgs /20kgs if powder or Granule.
Storage Powder 20°C 2 years; Floccule 20°C 2 years.
Shipping Room temperature 5-30℃ in China; may vary elsewhere
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Frequently Asked Questions

GENERAL INFORMATION

PVOH®990E is a fully hydrolyzed medium molecular weight polyvinyl alcohol (PVOH). Using the exclusive batch process which has advantages over other manufacturing methods,allows more efficient control over the degree of hydrolysis and particle size of the product.

USES

PVOH®990E achieves the best performance in textile, paper, molding, and adhesive industry.

STORAGE

1.PVOH®990E should be stored away from wet areas and naked flames. Ingress of moisture should be avoided to maintain product quality.
2.As supplied, the product should remain fit for use for 12 months from the date of delivery. Beyond that date, the material may still be fit for use, but we would advise that it is good practice to test the material. As such, we advise that material stored for 12 months or more after delivery should be tested before use.

SOLUTION PREPARATION:

The Hot Method is the most efficient if dispersion / wetting of the powder is an issue. It is either added slowly to water at more 90°C or to water at room temperature and then heated to more 90°C, with good agitation. It will disperse and on cooling will go smoothly into solution without lump formation.

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