Gantrez S-97 BF Methylvinylether/maleic acid copolymer International Specialty Products Polyvinyl ether (PVE) ADHESIVE The polycarboxylic acid derivatives with a pH of ~2 at 5% concentration are available either as viscous solutions or white powders designated. The vicinal dicarboxylic acid functionality of these materials is useful in a number of applications GANTREZ S-97 BF Polyvinylmethylether/Maleic Acid Copolymer adhesive hygroscopic hydrophobic low order of toxicity Hygroscopic, hydrphobic methylvinylether/maleic acid copolymer. Used in adhesive applications. Provides transparent and tack-free films and low order of toxicity.