Polyvinyl butyral, PVB, Polyvinyl butyrol/polyvinyl alcohol/polyvinyl acetate terpol, Polyvinylbutyral, Polyvinylbutyral, Pioloform BL 18, Polyvinyl butyral/alcohol/acetate, Butvar B-73, Polyvinylbutyral, Pioloform BN 18, Pioloform BS 18, Butvar B-74, Polyvinylbutyral resin, Vinyl acetal polymers, butyrals, Polyvinyl butyral (97%w/w), Polyvinylbutyral resin, Polyvinylbutyral, S-LEC B BL-5Z, S-LEC B BL-10, Butvar® B-74