Isosorbide-based polycarbonates, method of making, and articles formed therefrom
US8389662B2 · kind B2 · utility
2Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2010 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jul 9, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, a polysiloxane unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit, polysiloxane unit, and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit different from the isosorbide unit is derived from an aliphatic oligomer having a molecular weight of 900 to 4000, and the calculated bio-content is greater than or equal to 40 weight percent, based on the total weight of the polycarbonate polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.