Patent ID: 7754118
Filing Date: 2010-07-13
Classification: B24B,B24D,B29B,B29C,B29K,Y10T

Abstract:
1. A method of manufacturing a polishing pad, the method comprising: mixing a material for a hydrophilic polymeric matrix with a liquid material; performing gelling and curing of the mixture, thereby forming a polishing layer comprising the polymeric matrix, liquid non-water soluble microelements embedded in the hydrophilic polymeric matrix, and pores defined by the embedded liquid non-water soluble microelements on its surface; and processing the polishing layer, wherein the liquid material includes at least one material selected from the group consisting of aliphatic mineral oil, aromatic mineral oil, silicon oil without a hydroxyl group in a molecule, soybean oil, coconut oil, palm oil, cotton seed oil, camellia oil, and hardened oil and the embedded liquid non-water soluble microelements are not removed during processing of the polishing layer.