Rapid cure of polyurethane foam with ammonium containing materials
US4818775A · kind A · utility
3Cited by
16References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | May 21, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods for rapidly curing flexible polyether-derived foam in situ by adding to the foam forming composition an ammonia containing material having a decomposition temperature below the temperature of the highest reaction exotherm of the foam-forming composition and decomposing the ammonia containing material by exposure to the heat of the exotherm produced by reaction of the foam-forming components to release ammonia to cure the foam by contact therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.