Tris-organophosphite compositions having improved hydrolytic stability
US4707509A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Sep 2, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/524
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Tris-organophosphite compositions are provided having an improved hydrolytic stability, comprising PA0 (1) a tris-organophosphite of the formula: ##STR1## wherein: R.sub.1, R.sub.2 and R.sub.3 are selected from the group consisting of alkyl, alkenyl, aryl, alkylaryl and aralkyl groups together aggregating at least fourteen carbon atoms up to about sixty carbon atoms; and PA0 (2) a long-chain aliphatic amine in an amount to improve the hydrolytic stability of the phosphite and having the formula: ##STR2## wherein: R.sub.4, R.sub.5 and R.sub.6 are selected from the group consisting of hydrogen; aliphatic (including alkyl and alkenyl) groups having from one to about thirty-six carbon atoms; and hydroxyalkyl having from two to about six carbon atoms; one of R.sub.4, R.sub.5 and R.sub.6 is an aliphatic group having at least ten carbon atoms, and the remaining of R.sub.4, R.sub.5 and R.sub.6 are selected from hydrogen, alkyl having from one to four carbon atoms and hydroxyalkyl; and preferably at least one of R.sub.4, R.sub.5 and R.sub.6 is hydroxyalkyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.