Transparent compositions, methods for the preparation thereof, and articles derived therefrom
US7321014B2 · kind B2 · utility
10Cited by
54References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2004 |
| Grant date | Jan 22, 2008 |
| Priority date | — |
| Expiry date | May 16, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/448
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic composition is disclosed, comprising the reaction product of: a polyester polycarbonate comprising a polyester unit and a polycarbonate unit; a polysiloxane polycarbonate copolymer having a haze of 30% or less, comprising a polycarbonate unit and a polysiloxane unit; and a transesterification catalyst. The resulting thermoplastic composition has a haze of 30% or less as measured according to ASTM D1003-00 at a thickness of 3.2 millimeters. A method of forming the composition and articles formed from the composition are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.