Polyester polycarbonate compositions, methods of making, and articles formed therefrom
US7829632B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2007 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Jul 20, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composition comprises a polyester-polycarbonate polymer comprising isophthalate-terephthalate-resorcinol ester units and carbonate units, a poly(C4-alkylene) ester, and a polyester comprising cyclohexanedimethylene terephthalate units, or a combination of cyclohexanedimethylene terephthalate and ethylene terephthalate. The composition can be extruded into pellets that are clear and colorless. The composition can further be molded into articles having a percent haze value less than or equal to 10 percent, and total luminous transmittance value of greater than or equal to 70 percent, measured in accordance with ASTM D1003-00. Also disclosed is a method for forming the compositions, and articles prepared therefrom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.