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Butvar® B-72

Technical Datasheet | Supplied by Eastman

Butvar® B-72 by Eastman is a free-flowing polyvinyl butyral (PVB) thermoplastic powder grade. Imparts good adhesion, toughness and flexibility. Retains clarity of the coating used for wood and metal substrates and offers reactive hydroxyl sites for crosslinking with thermoset systems. Butvar® B-72 is recommended for binders and structural adhesives, structural composites and laminates.

Butvar® B-72 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Hydroxyl Content

17.5 - 20.0 %

(Polyvinyl Alcohol)

Molecular Weight

170.000 - 250.000

(Size exclusion chromatography with low angle laser light scattering standard)

Volatile Content

< 3.5 %

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