Solid alkylaryl phosphite compositions and methods for manufacturing same
US8309635B2 · kind B2 · utility
4Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2010 |
| Grant date | Nov 13, 2012 |
| Priority date | — |
| Expiry date | Mar 15, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0008
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention is directed to various alkylaryl phosphite compositions that ideally are suitable for use as secondary antioxidants in polymers. In one aspect, the phosphite composition comprises a tris(monoalkylaryl)phosphite in an amount from 51 to 95 weight percent; and at least one of: a bis(monoalkylaryl)dialkylaryl phosphite; a bis(dialkylaryl)monoalkylaryl phosphite; and a tris(dialkylaryl)phosphite. The inventive phosphite composition is a solid at ambient conditions. The invention also relates to alkylate compositions and processes for forming such alkylate compositions and such phosphite compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.