Patent ID: 8961918
Filing Date: 2015-02-24
Classification: B05D,B81C,C08G,C09D,G03F,H01L

Abstract:
1. A method for processing a substrate, comprising: providing a substrate having a surface; providing a copolymer composition, comprising a poly(styrene)-b-poly(dimethylsiloxane) block copolymer component, wherein the number average molecular weight of the poly(styrene)-b-poly(dimethylsiloxane) block copolymer component is 25 to 1,000 kg/mol, and, an optional solvent; applying a film of the copolymer composition to the surface of the substrate; baking the film to remove any solvent; heating the film at 300 to 350° C. under a gaseous atmosphere having an oxygen concentration of ≦7.5 ppm for a period of 1 second to 4 hours to form an annealed film; and, treating the annealed film to remove the poly(styrene) from the annealed film and to convert the poly(dimethylsiloxane) in the annealed film to SiO