Patent ID: 8535119
Filing Date: 2013-09-17
Classification: B24B,B29C

Abstract:
1. A method for producing a shape memory chemical mechanical polishing pad, comprising: providing a shape memory matrix material transformable between an original shape and a programmed shape; preparing a polishing layer in an original state exhibiting an original thickness, OT, comprising the shape memory matrix material in the original shape; subjecting the polishing layer to an external force; setting the shape memory matrix material to the programmed shape to provide the polishing layer in a densified state, wherein the polishing layer exhibits a densified thickness, DT; removing the external force; wherein the DT is <80% of the OT; wherein the shape memory matrix material exhibits a >70% reduction in storage modulus as the temperature of the shape memory matrix material is raised from (T wherein the polishing layer has a polishing surface adapted for polishing a substrate selected from at least one of a magnetic substrate, an optical substrate and a semiconductor substrate.