Impact resistant polyurethane and method of manufacture thereof
US5962617A · kind A · utility
147Cited by
21References
85Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 1, 1996 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Feb 1, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is an optically clear impact resistant polyurethane which provides exceptionally high heat distortion temperatures and excellent chemical resistance. The invention is particularly useful for transparency applications that require excellent impact resistance coupled with high heat distortion temperatures, such as glazings for buildings, vehicles, riot shields, aircraft canopies, and face masks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.