Alkoxylated modified Mannich condensates and manufacture of rigid polyurethane foams therewith
US4500655A · kind A · utility
16Cited by
11References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1983 |
| Grant date | Feb 19, 1985 |
| Priority date | — |
| Expiry date | Dec 29, 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, such polyols being prepared by reacting a propoxylation product with melamine and a lower alkylene carbonate. The propoxylation product (which can contain some ethylene oxide) is prepared by propoxylating a Mannich condensate prepared by reacting phenol or a C.sub.1 -C.sub.12 alkylphenol with formaldehyde and diethanolamine in the mole ratios of from 1:1:1 to about 1:3:3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.