Patent ID: 8017194
Filing Date: 2011-09-13
Classification: C08F,C08L,C09D,Y10T

Abstract:
1. A method for providing a structure which comprises: providing over a substrate a layer of about 5 nanometers to about 200 nanometers of a random free radical copolymer of styrene, methyl methacrylate and a reactive co-monomer selected from the group consisting of 2,2,5-trimethyl-3-(1′-p-hydroxybenzylethoxy)-4-phenyl-3-azahexane, 3-(trimethoxysilyl)propyl methacrylate and glycidyl methacrylate; wherein the amount of the reactive co-monomer is about 2 mole % to about 5 mole %; heating to cause crosslinking of the random free radical copolymer; forming a film of about 25 nanometers to about 80 nanometers of a diblock copolymer of polymethylmethacrylate-polystyrene on the random free radical copolymer; wherein the random copolymer is energy neutral with respect to each block of the diblock copolymer film; and further processing comprising annealing at temperatures of about 100° C. to about 200° C. to thereby create a combined self-assembled pattern.