Thermoplastic foam and process for the preparation thereof
US4306036A · kind A · utility
9Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Aug 21, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J9/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Anhydride-containing thermoplastic polymers are foamed with ammonium carbonate, ammonium bicarbonate and ammonium oxalate to provide foams having good heat distortion characteristics and undesirable organic blowing agents are avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.