Benzoquinoneimines as vinyl aromatic polymerization inhibitors
US6222080A · kind A · utility
2Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Dec 14, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a vinyl aromatic, especially styrene, polymerization inhibitor system comprising an N-phenyl-1,4-benzoquinoneimine compound and optionally an aryl-substituted phenylenediamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.