Patent ID: 9321142
Filing Date: 2016-04-26
CPC Classification: B24B,C08G,C08J,H01L

Claim Text:
1. A polishing pad, consisting of: a polymer material having a tensile modulus of 130 to 800 MPa at 50° C. after saturation swelling with 50° C. water, a loss tangent at 50° C. of not more than 0.2, and a contact angle with water of not more than 80°, wherein the polymer material is a thermoplastic polyurethane obtained by reacting a polymer diol, an organic diisocyanate, and a chain extender, wherein the thermoplastic polyurethane comprises at least 4.9 weight % but less than 6.0 weight % nitrogen atom derived from the isocyanate group, and wherein the polymer material has substantially no foam structure.