Methods and compositions for inhibiting vinyl aromatic monomer polymerization
US8298440B2 · kind B2 · utility
1Cited by
9References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Oct 19, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F12/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods and compositions are provided for inhibiting the polymerization of a vinyl aromatic monomer, such as styrene monomer, during elevated temperature processing thereof or during storage or shipment of polymer containing product. The compositions comprise a combination of a quinone methide derivative A) and a phenol compound B). The methods comprise adding from about 1-10,000 ppm of the combination to the monomer containing medium, per one million parts of the monomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.