The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2024
Filed:
Oct. 23, 2020
Kaneka Corporation, Osaka, JP;
KANEKA CORPORATION, Osaka, JP;
Abstract
A masterbatch (C) containing thermally expandable microcapsules (A) and a carrier resin composition (B) is provided. 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 the plasticizer (B2) being an acrylic plasticizer having a weight average molecular weight of 1,000 or more and 20,000 or less. The carrier resin composition (B) is substantially compatible with a polycarbonate resin and has a shear viscosity of 1.0 Pa·s or more and 1.5×10Pa·s or less at 80° C. The occurrence of whitening is suppressed and a good appearance can be obtained in an injection molded foam made with the masterbatch. A polycarbonate resin composition, an injection molded foam, and a method for producing an injection molded foam are provided.