Blowing agents for phenolic resins
US5596022A · kind A · utility
4Cited by
1References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2361/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a process for producing phenolic foams frown phenolic resins using a blowing agent comprising 1,1,1,4,4,4-hexafluorobutane. These blowing agents are much more environmentally friendly than the conventional chlorofluorocarbons and do not adversely affect the properties of the foams produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.