Thermoplastic polyurethane elastomers (TPUs) prepared with polytrimethylene carbonate soft segment
US6593444B2 · kind B2 · utility
4Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Mar 27, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/664
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a new class of TPUs with improved properties, based on poly(1,3-propanediol carbonate) diol, using 10 to 55% hard segment concentration, and cured with a diisocyanate. The composition provides a broader range of mechanical and thermal properties for TPU formulations, including improvements in hardness, higher elasticity modulus, and improved softening temperature and coefficient of thermal expansion, in addition to improved clarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.