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Butvar® B-90

Technical Datasheet | Supplied by Eastman

Butvar® B-90 by Eastman is a free-flowing polyvinyl butyral (PVB) thermoplastic grade. It is available as powder and imparts broad solubility, good adhesion, toughness & flexibility. Retains clarity of the coating and offers reactive hydroxyl sites for crosslinking with thermoset. Butvar® B-90 is recommended for binders for adhesives and structural composites, for inks and toners. Suitable for wash primers and general metal and wood coatings.

Butvar® B-90 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Hydroxyl Content

18.5 - 20.5 %

(Polyvinyl Alcohol)

Volatile Content

≤ 5.0 %

Acetate Content

≤ 2.5 %

(Polyvinyl Acetate)

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