Low pressure process for frothing polyurethane or polyisocyanurate
US9738767B2 · kind B2 · utility
2Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2014 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Feb 25, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process of making a polyurethane or polyisocyanurate foam comprises the step of mixing under low pressure: (A) An isocyanate; (B) A compound reactive with the isocyanate, e.g., a polyol; (C) A liquid blowing agent; and (D) Carbon dioxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.