Patent ID: 11911870
Assignee: APPLIED MATERIALS, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A polishing pad, comprising:
a plurality of polishing elements formed of a pre-polymer composition, the pre-polymer composition comprising:
an isobornyl acrylate (IBXA) concentration of about 30 wt % to about 40 wt %;
a 3,3,5-Trimethylcyclohexyl acrylate (TMCHA) concentration of about 10 wt % to about 15 wt %;
a difunctional aliphatic urethane methacrylate concentration of about 40 wt % to about 50 wt %, wherein the difunctional aliphatic urethane methacrylate has a chain length within a range of about 2 to about 16 mer units and methacrylate end groups; and
a difunctional aliphatic urethane acrylate oligomer concentration of about 5 wt % to about 10 wt %, wherein the difunctional aliphatic urethane acrylate oligomer has a chain length within a range of about 30 to about 200 mer units and acrylate end groups,
wherein the pre-polymer composition has a glass transition temperature (Tg) of about 80° C. or more, and
wherein a storage modulus (E′) of the pre-polymer composition at a temperature of 80° C. (E′80) is about 200 MPa or greater.