Heterogeneous anionic polymerization process
US4035562A · kind A · utility
1Cited by
2References
12Claims
0Family size
Inventors
Key dates
| Filing date | Jun 14, 1976 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Jun 14, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a heterogeneous anionic polymerization process, catalyzed by a metallic insertion graphitic compound. According to the invention, the alkaline metal chosen for the insertion compound is lithium, and the insertion compounds are of binary or ternary type; in the latter case, the insertion compound may comprise an aromatic hydrocarbon also inserted within the graphitic structure. The invention relates in particular to the homopolymerization of butadiene or isoprene, and to the copolymerization of isoprene-styrene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.