POLY(PHENYLENE ETHER)/EPOXY HOMOGENEOUS SOLID AND POWDER COATING COMPOSITION INCORPORATING SAME

摘要

A homogeneous solid composition includes an aromatic epoxy resin and a poly(phenylene ether) having a number average molecular weight of 600 to 2000 atomic mass units and an average of 1.5 to 3 hydroxyl groups per molecule. The molecular weight and hydroxyl functionality of the poly(phenylene ether) allow it to be dissolved in the epoxy resin at relatively low temperature, and remain dissolved as the solution is cooled and solidified. The homogeneous solid composition facilitates incorporation of the poly(phenylene ether) into powder coating compositions that exhibit reduced water absorption in the cured state.

主权项

1. A solid composition comprising:
an aromatic epoxy resin; and a poly(phenylene ether) having a number average molecular weight of 600 to 2000 atomic mass units and an average of 1.5 to 3 hydroxyl groups per molecule; wherein the solid composition comprises the aromatic epoxy resin and the poly(phenylene ether) in amounts effective to produce a single glass transition temperature in the range 40 to 92° C.; and wherein the solid composition exhibits no other glass transition temperature in the range −20 to 200° C.