Polyisocyanurate foams made with polyester polyols and chlorodifluoromethane as a blowing agent
US5124366A · kind A · utility
16Cited by
15References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1990 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Nov 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the manufacture of a rigid, closed-cell polyisocyanurate foam from a foam forming mixture comprising an organic polyisocyanate, a polyol, a blowing agent, and a catalyst, utilizing a polyester polyol as the sole polyol, and chlorodifluoromethane or a mixture of chlorodifluoromethane and at least one co-blowing agent as the blowing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.