Patent ID: 11898016
Assignee: KANEKA CORPORATION
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B  Y | IPC B  C

Claim 0:
1. A masterbatch (C) comprising:
thermally expandable microcapsules (A); and
a carrier resin composition (B), wherein the carrier resin composition (B) contains a carrier resin (B1) and a plasticizer (B2), the carrier resin (B1) being an acrylic resin having a weight average molecular weight of 8,000 or more and 350,000 or less and being a solid at 20° C., and
the plasticizer (B2) being a liquid at 20° C. and having a weight average molecular weight of 1,000 or more and 20,000 or less, and
wherein the carrier resin composition (B) is substantially compatible with a polycarbonate resin and has a shear viscosity of 1.0 Pas or more and 1.5×106 Pa·s or less at 80° C.