Elvanol

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Description

[Kuraray-Poval (formerly DuPont)] A registered trademark for a series of Polyvinyl alcohol emulsions. Elvanol® products are prepared in water solutions and are compatible with Starch and Carboxymethyl cellulose. When dried, they produce a water-resistant coating. They are used commercially as adhesives, emulsifiers, textile finishing materials, photosensitive coatings, and binders in paper products.

Kuraray manufactures several types of Elvanol products available as fully hydrolyzed or as a copolymer. Fully hydrolyzed grades contain few (if any) residual acetate groups, dissolve in hot (200 F) water, and remain in solution when cooled to room temp. Partially hydrolyzed grades retain some of the residual acetate groups and dissolve in water at room temperature. The copolymer grades are developed specifically for warp sizing in textile and paper industry.

Elvanol 71-30 is a medium, fully hydrolyzed grade of PVOH.

Synonyms and Related Terms

Elvanol 71-30

Personal Risks

May contain trace amounts of methanol and sodium acetate.

Kuraray Poval claims there are no health hazards [1]

Elvanol 71-30 SDS 2014: https://www.chemistrystore.com/polyvinylalcohol.pdf

Collection Risks

Elvanol 71-30: Decomposition can occur below the recommended processing temperature limit. At tempoeratures above the “conditions to avoid” temperature, thermal decomposition of the resin becomes rapid. Hazardous decomposition products: carbon monoxide, Organic acids, Aldehydes, Alcohols, Sodium oxides. (from SDS)

Environmental Risks

Biodegradable and recyclable [2]

Physical and Chemical Properties

Elvanol® 71-30: fully hydrolyzed, viscosity=medium, used as a replacement for starch and as a water and grease resistant sizing, coating, or adhesive

Resources and Citations

  • Kuraray-Poval: Elvanol Website
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 304
  1. [1]
  2. [2]

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