Polycarbonate resin foamed blow-molded article and process for producing same
US9259874B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2012 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Nov 2, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a foamed blow-molded article, including melting and mixing a branched polycarbonate resin having a specific polystyrene equivalent weight average molecular weight, a specific weight average absolute molecular weight and a relatively high terminal hydroxyl group content, a linear polycarbonate resin having specific polystyrene equivalent weight average molecular weight, a specific weight average absolute molecular weight and a relatively low terminal hydroxyl group content and a branching agent to obtain a polycarbonate resin “A”, mixing the polycarbonate resin “A” with a blowing agent to obtain a foamable molten resin composition, extruding the foamable molten resin composition to obtain a foamed parison, and blow-molding the foamed parison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.