Method for stabilizing elastomers and the elastomers which are produced according to this method
Abstract
Abstract THIS INVENTION RELATES TO A METHOD FOR STABILIZING ELASTOMERS OR MIXTURES BASED ON ELASTOMERS WHICH COMPRISES ADDING THERETO ALONE OR IN COMBINATION WITH ONE OR MOREOTHER NONPHOSPHORUS STAILIZING AGENTS, AN EFFECTIVELY STABILIZING AMOUNT OF AT LEAST ONE HYDROLYSIS STABLE PHOSPHOROUS ESTER CORRESPONDING TO THE GENERAL FORMULA (((C3H7-)3-PHENYL)-O-)X-P(-O-R)(3-X) WHEREIN THE GROUP C3H7 IS AN ISOPROPYL RADICAL, X IS THE INTEGER 1, 2 OR 3 AND R IS AN ARYL OR ALKARYL RADICAL CONTAINING FROM 6 TO ABOUT 30 CARBON ATOMS OR AN ALIPHATIC, CYCLOALIPHAIC OR ARYLAIPHATIC RAICAL CONTAINING FROM 2 TO ABOUT 30 CARBON ATOMS AND FROM 0 TO 2 CHLORINE ATOMS, 0 OR 1 BROMINE ATOM AND 0 TO 6 OXYGEN ATOMS. THIS INVENTION ALSO RELATES TO ELASTOMERS AND MIXTURES BASED ON ELASTOMERS STABILIZED ACCORDING TO THE ABOVE METHOD.
Inventors
- 👤 M Demarcq
- 👤 R Petitjean
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |