| abstract |
A poly(phthalazinone sulfone) composition for molded articles having such characteristics as high temperature resistance, good electrical properties, good chemical and solvent resistance and toughness consists essentially of a polymer of formula (I); wherein Z is a bisphenyl sulfone moiety of formula: (II); A is a phthalazinone moiety of formula (III); Cp is A, as defined above, or a biphenol moiety of formula (IV); x is an integer of at least 1; y is an integer of at least 1; and x + y = n, where n is an integer such that the polymer has a weight average molecular weight of about 20,000 to about 170,000, the composition comprising less than 5%, by weight, of low molecular weight oligomers; and having a glass transition temperature (Tg) from 225 to 305°C. |