Thermoplastic foamable blends
US4334030A · kind A · utility
19Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1979 |
| Grant date | Jun 8, 1982 |
| Priority date | — |
| Expiry date | Nov 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/108
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Foamable blends are provided of high performance thermoplastic polymers such as polyphenylene oxides, polystyrenes, etc., and an effective amount of a first blowing agent which is an amide derivative of azodicarboxylic acid and a second blowing agent which is a dihydrooxadiazinone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.