Water blown, energy absorbing foams
US5449700A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1995 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Feb 17, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to an isocyanate reactive mixture of specified amounts of a) a polyether polyol having a hydroxyl functionality of from 4 to 8 and having a hydroxyl number of from about 300 to about 450, b) a polyether polyol having a hydroxyl functionality of from 4 to 8 and having a hydroxyl number of from about 50 to about 200, and wherein at least 75% of the hydroxyl groups are primary hydroxyl groups, c) an adduct of a mono-, di-, or trialkanolamine and propylene oxide, said adduct having a hydroxyl number of from about 100 to about 800, and d) a polyoxyalkylene polyamine having a molecular weight of from about 2000 to about 5000, and containing from 2 to 3 primary amino groups. The invention is also directed to water-blown, energy absorbing foams made from the isocyanate reactive mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.