Patent ID: 7354527

Claim:
A chemical mechanical polishing pad which has a storage elastic modulus Eâ€²(30Â° C.) at 30Â° C. of 99 MPa or less and an (Eâ€²(30Â° C.)/Eâ€²(60Â° C.)) ratio of the storage elastic modulus Eâ€²(30Â° C.) at 30Â° C. to the storage elastic modulus Eâ€²(60Â° C.) at 60Â° C. of 2.5 or more when the storage elastic moduli of a polishing substrate at 30Â° C. and 60Â° C. are measured under the following conditions: initial load: 100 g maximum bias: 0.01% frequency: 0.2 Hz wherein the polishing substrate comprises a water-insoluble member and water-soluble particles dispersed in the water-insoluble member, and the water-insoluble member comprises a partially or wholly crosslinked organic material which has been obtained by crosslinking an organic material with 0.01 to 0.6 part by mass of a crosslinking agent based on 100 parts by weight of the organic material.