Patent ID: 9012545
Filing Date: 2015-04-21
Classification: C09D,G03F

Abstract:
1. A copolymer composition, comprising: a poly(styrene)-b-poly(acrylate) block copolymer, component; and, an antioxidant; wherein the poly(styrene)-b-poly(acrylate) block copolymer component is a blend, comprising: >50 wt % to 99 wt % (on a solids basis) of an ordered poly(styrene)-b-poly(acrylate) block copolymer, BCP1, having a polystyrene volume fraction, Vf wherein χN BCP1 is the product the Flory-Huggins interaction parameter, χ BCP1 , of BCP1 at 225° C. and the degree of polymerization, N BCP1 , of BCP1; and, 1 to <50 wt % (on a solids basis) of a disordered poly(styrene)-b-poly acrylate) diblock copolymer, BCP2, having a polystyrene volume fraction, Vf wherein χN BCP2 is the product of the Flory-Huggins interaction parameter, χ BCP2 of BCP2 at 225° C. and the degree of polymerization, N BCP2 , of BCP2; wherein the number average molecular weight of BCP1, M wherein the number average molecular weight of BCP2, M wherein M