Stabilizing polyurea polymer polyols by treating with a secondary amine
US4293470A · kind A · utility
51Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1980 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Jul 11, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/409
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurea polymer polyol with improved storage stability is made by the reaction of a hydroxyl-containing amine, a polyether polyol of about 3,000 to 8,000 molecular weight and an organic polyisocyanate followed by quenching with a secondary amine. This stable polyurea polymer polyol may be used in the manufacture of flexible polyurethane foams which are firmer and stronger than similar products using conventional polyols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.