Polymerization inhibitor composition for vinyl aromatic compounds
US4915873A · kind A · utility
14Cited by
15References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1988 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | Mar 22, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K15/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Vinyl aromatic compounds are stabilized against polymerization by the addition of an effective amount of a polymerization inhibition composition comprising (a) a phenothiazine compound; and (b) an aryl-substituted phenylenediamine compound. In other aspects, this invention is directed to a vinyl aromatic composition stabilized against polymerization by such polymerization inhibitor composition, as well as to a method of stabilizing a vinyl aromatic composition against polymerization which method comprises adding an effective amount of such polymerization inhibitor composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.