Restricted expansion foaming and the flexible polyurethane foam thereby produced
US4777186A · kind A · utility
16Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1987 |
| Grant date | Oct 11, 1988 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Polyurethane foams having improved physical properties are produced by placing a polymerizable polyurethane reaction mixture into a pressurizable chamber, then polymerizing the reaction mixture at an elevated pressure sufficient to prevent the resulting polymer from completely filling the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.