Hydrolytically stable phosphite compositions
US8048946B2 · kind B2 · utility
3Cited by
4References
8Claims
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Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Nov 1, 2011 |
| Priority date | — |
| Expiry date | Jul 28, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/17
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Hydrolytically stable phosphites as secondary antioxidants for polymer resins comprising a phosphite and an amine compound. The phosphite may be a liquid phosphite composition. The amine compound may have the structure of formula I:wherein x is 1, 2 or 3; R1 is selected from the group consisting of hydrogen, and straight or branched C1-C6 alkyl, and R2 is selected from the group consisting of straight or branched C1-C30 alkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.