Regenerated, high molecular weight, thermoplastic resins and process for regenerating thermoplastic resins
US5089571A · kind A · utility
9Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Dec 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High molecular weight thermoplastic polyurethane resins with narrow molecular weight distribution and good physical properties are prepared by regenerating thermally degraded and/or off-grade thermoplastic polyurethane resins. The regenerated high molecular weight thermoplastic polyurethane resins do not present any processing difficulties inherent to high molecular weight resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.