Patent ID: 8796398
Filing Date: 2014-08-05
Classification: C08G,C09D,G03F,H01L

Abstract:
1. A composition for forming a superfine pattern, comprising perhydropolysilazane (I), silicon-containing polymer (II) having a hydrocarbon group, and a solvent which dissolves said perhydropolysilazane (I) and said silicon-containing polymer (II) but which does not dissolve a resist pattern; wherein the mixture of said perhydropolysilazane (I) and said silicon-containing polymer (II) contains silicon-hydrogen bonds and silicon-hydrocarbon group bonds in such amounts that the number of the silicon-hydrocarbon group bonds is in a ratio of 1 to 44% based on the total number of the silicon-hydrogen bonds and the silicon-hydrocarbon group bonds and further wherein said silicon-containing polymer (II) is chosen from the group consisting of a) a silicon-containing polymer (II) comprising a repeating unit represented by the following formula (IIa): in which each R b) a silicon-containing polymer (II) comprising a repeating unit represented by the following formula (IIc): in which R c) a silicon-containing polymer (II) comprising a repeating unit represented by the following formula (IIb): in which each R