3,3-Carbonylbis(carbazates) as blowing agents
US4169954A · kind A · utility
2Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1978 |
| Grant date | Oct 2, 1979 |
| Priority date | — |
| Expiry date | May 22, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/104
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Novel blowing agents are disclosed comprising 3,3'-carbonylbis(organo carbazates). The organo group may be alkyl, cycloalkyl, aryl or aralkyl moieties. In the preferred embodiment the organo group is an alkyl group selected from the group consisting of methyl, isopropyl, secondary butyl or tertiary butyl. The blowing agents find utility in the preparation of expanded organoplastic materials such as rubbers, thermosetting resins and thermoplastic resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.