Polyurethanes prepared with novel Mannich bases
US4143220A · kind A · utility
3Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/285
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cellular and non-cellular polyurethane plastics and semi-hard polyurethane foams which are prepared by the use of novel Mannich bases of the general formula ##STR1## and which have improved strength and tear resistance are disclosed herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.