Process for rapid cooling of polyurethane foam
US5128379A · kind A · utility
18Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1991 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Mar 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/918
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved process for rapidly cooling hot freshly polymerized foam is provided by passage of a fluid coolant stream having a water vapor content which initially is in the range from slightly below to above the dew point. In preferred embodiments the cooling fluid stream is recirculated, and auxiliary blowing agents and gaseous reaction products are removed and recovered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.