Phosphoramidates containing a p-phenylenediamine group
US4418022A · kind A · utility
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3Claims
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Key dates
| Filing date | Jul 19, 1982 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Jul 19, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2050/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel phosphoramidates of the general formula: ##STR1## wherein R, R' and R" represent certain specified substituent groups, are useful as stabilizing agents for organic materials, such as natural and synthetic rubbers and lubricating oils. The combined use of these compounds with certain sulfur-containing compounds shows a surprising synergistic effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.