Patent ID: 6075113
Filing Date: 2000-06-13
Classification: A63C,C08L

Abstract:
A slow speed wheel composition comprising at least 20 wt % of a segmented thermoplastic copolyester or a blend of copolyesters consisting essentially of a multiplicity of recurring long chain ester units and short chain ester units joined head-to-tail through ester linkages, said long chain ester units being represented by the formula (A): ##STR7## and said short chain units being represented by the formula (B): ##STR8## wherein said short chain ester units make up between about 10 to about 95 wt % of said copolyester or blend of copolyesters; andG is a divalent radical remaining after the removal of terminal hydroxyl groups from a polyether glycol copolymer based on poly(propylene oxide) and poly(ethylene oxide); said polyether having a number average molecular weight of about 600-5000;R is a divalent radical remaining after removal of carboxyl groups from a aromatic dicarboxylic acid; said aromatic dicarboxylic acid is selected from a group consisting of terphthalic acid, isophthalic acid and phthalic acid or mixtures thereof;D is a divalent radical remaining after removal of hydroxyl groups from a diol having a molecular weight of less than about 250 or mixtures thereof.