Polymerization inhibitor for vinyl aromatic compounds
US3988212A · kind A · utility
31Cited by
2References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Mar 21, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C7/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for the distillation of readily polymerizable vinyl aromatic compounds and a new polymerization inhibitor therefor. The process comprises subjecting a vinyl aromatic compound to distillation conditions in a distillation system and adding to the system the new polymerization inhibitor comprising a mixture of N-nitroso diphenyl amine and a dinitro-O-cresol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.