Alkoxylated Mannich condensates having fire retardancy properties and manufacture of rigid polyurethane foam therewith
US4485195A · kind A · utility
11Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1983 |
| Grant date | Nov 27, 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
This invention relates to polyols that can be used to prepare rigid foams having improved fire retardancy properties, such polyols being prepared by alkoxylating with propylene oxide (which can contain some ethylene oxide) a reaction product prepared by heating a mixture of a Mannich condensate, a minor amount of melamine and 1 to 6 mols of formaldehyde, based on the melamine; the Mannich condensate having been prepared by reacting phenol or a C.sub.1 -C.sub.12 alkylphenol with formaldehyde and diethanolamine in the mol ratios of from 1:1:1 to about 1:3:3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.