Stevens, Davis, Miller & Mosher
Method of producing elastomer resins
 A flexible elastomer resin having an improved impact resistance and strength is produced by reacting an acid anhydride group functional polymer, which is prepared by reacting a hydroxyl group functional polymer having a number average molecular weight of 400 to 10,000 and containing at least two hydroxyl groups at the end or the side chain with a tricarboxylic acid anhydride monohalide, with at least one nitrogen compound having polyfunctional active hydrogens and at least one epoxy resin having at least one epoxy group. 
Bridgestone Tire Company Limited
C
C08L
inventional
Takashi Masumi Yoshiko Toshio
Ohashi Saito Taniguchi Yukuta