Method for making copolymers of lactide and a 1:4-3:6 dianhydrohexitol
US8268954B2 · kind B2 · utility
1Cited by
7References
11Claims
0Family size
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Key dates
| Filing date | Aug 7, 2008 |
| Grant date | Sep 18, 2012 |
| Priority date | — |
| Expiry date | Feb 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G64/323
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyester-carbonate copolymers are prepared by copolymerizing lactide with a 1:4-3:6 dianhydrohexitol in the presence of a carbonate precursor and a polymerization catalyst. The copolymers have an elevated glass transition temperature, relative to polylactide resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.