Azeotropic compositions of dimethoxymethane and cyclopentane and the use thereof in the production of foams
US5665788A · kind A · utility
2Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1996 |
| Grant date | Sep 9, 1997 |
| Priority date | — |
| Expiry date | Nov 1, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An azeotropic composition made up of from about 58 to about 77% by weight of dimethoxymethane and from about 23 to about 42% by weight of cyclopentane is used as a blowing agent in a process for the production of polyurethane foams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.