Process for making di(hydroxyalkylaryl) aryl phosphate compounds
US6403819B1 · kind B1 · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1997 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | May 21, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0066
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the formation of a di(hydroxyalkylaryl) aryl phosphate is disclosed which comprises the reaction of an o-alkyl substituted aromatic diol, e.g., an o-alkyl substituted hydroquinone such as o-t-butylhydro-quinone, and monoaryl dihalophosphate, such as monophenyl dichlorophosphate. This process can, in particular, be used to make certain di(hydroxy-o-alkylphenyl) phenyl phosphate compounds, preferably those that are p-hydroxy, such as di(p-hydroxy-o-t-butylphenyl) phenyl phosphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.