Patent ID: 6203922
Filing Date: 2001-03-20
Classification: C08G,Y10T

Abstract:
A ductile, glassy thermoplastic polymer having a glass transition temperature T.sub.g higher than 230.degree. C., said polymer comprising repeating units ##STR17##where n is such that the weight average molecular weight Mw is greater than 10,000 Da;wherein A isa)i) a bulky, rigid aromatic residue containing at least two aryl rings linked by a linking group,a)ii) a rotationally hindered aromatic residue containing at least two aryl rings linked by a linking group;wherein B isb)i) a ductility-inducing monomer residue containing at least one conformable carbocyclic ring structure of six to twelve ring atoms, optionally containing one or more non-adjacent heteroatoms selected from the group consisting of N, O, and S, orb)ii) a ductility-inducing molecule selected from the group consisting of bisaryl compounds of the formula ##STR18##wherein R is an optionally substituted alkylene, cycloalkylene, ether, thioether, keto, sulfone, ester, carbonate, or amide linking group;wherein each X and Y individually are linking groups selected from the group consisting of ##STR19##wherein when A is a bulky, rigid aromatic residue a)i) containing at least two aryl residues, both b)i and b)ii are present, andwherein A is a bulky rotationally hindered aromatic residue a)ii) containing at least two aryl rings, one or both of b)i and b)ii are present, andwherein the mol ratio of residue A to residue B is from 8:1 to about 1:3, and wherein A-X and B-Y are present in any order.