Modified Mannich condensates and manufacture of rigid polyurethane foam with alkoxylation products thereof
US4487852A · kind A · utility
9Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1983 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Oct 25, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to Mannich condensates of phenol, formaldehyde and an amine mixture consisting of diethanolamine and melamine which is then alkoxylated with propylene oxide or a mixture of propylene oxide and ethylene oxide. The thus-prepared alkoxylated Mannich condensates are then used as all or a part of the polyol component in making a rigid polyurethane foam having improved fire retardancy properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.