Foaming compositions
US6753356B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1999 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Aug 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2203/146
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Use as foaming agents having a low environmental impact of azeotropic or near azeotropic compositions using difluoromethoxy-bis(difluoromethyl ether) and/or 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.