Foam-forming mixtures with decreased decomposition of hydrohalocarbon blowing agents
US5693686A · kind A · utility
4Cited by
19References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1994 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Feb 10, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyisocyanate having an acid value of at least 0.01% HCl is used to produce polyisocyanate, polyisocyanurate and polyurethane urea foams with an HCFC blowing agent. The use of such a polyisocyanate is advantageous because the polyisocyanate does not cause significant decomposition of the HCFC blowing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.