US3689513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibitors of oxidative degradation
Assignee: NATURAL RUBBER PRODUCERS
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Filing: 1969-07-14
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Granted: 1972-09-05
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Expires: 1989-07-14
Abstract
Abstract Novel secondary aromatic-aliphatic amines having anti-oxidant properties are prepared by reacting aromatic nitroso amines or phenols with olefins having at least one hydrogen atom attached to a carbon atom which is in the Alpha -position with respect to a carbon-carbon double bond. The reaction may be performed by heating the reactants together under an inert atmosphere in the presence of a polar or non-polar organic solvent, or using the olefin as a solvent.
Inventors
- 👤 Maurice Edward Cain
- 👤 Brian Saville
- 👤 Geoffrey Thomas Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:46
CPC Classifications
C; C11; C11B; C11B5/00; C11B5/0042; C11B5/005; C07; C07C; C07C209/00; C07C209/60; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C09; C09K; C09K15/00; C09K15/04; C09K15/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
30 words
A process as claimed in claim 1, wherein the radicals R in the olefin are hydrogen atoms or saturated or unsaturated alkyl groups containing from one to six carbon atoms.
Claim 2
Dependent Claim
31 words
A process as claimed in claim 1, wherein the reactants are heated together for a time between a quarter of an hour and 9 days under vacuum or an inert atmosphere.
Claim 3
Dependent Claim
30 words
A process as claimed in claim 1, wherein the reaction is performed by heating the reactants in the absence of a solvent at a temperature from 60* to 100* C.
Claim 4
Dependent Claim
25 words
A process according to claim 1 wherein the molar proportion of reactant (b) is at least about 4 times the molar proportion of reactant (a).
Claim 5
Dependent Claim
25 words
A process according to claim 1 wherein the molar proportion of reactant (b) is at least about 4 times the molar proportion of reactant (a).
Claim 6
Dependent Claim
16 words
A process as claimed in claim 2, wherein the olefinically unsaturated compound is 2-methylpent-2-ene or 2-methyloct-2-ene.
Claim 7
Dependent Claim
29 words
A process as claimed in claim 2, wherein the olefinically unsaturated compound is pilchard oil, rapeseed oil, palm oil, castor oil or the carboxylic acids derived therefrom by hydrolysis.
Claim 8
Dependent Claim
15 words
A process as claimed in claim 8, wherein the olefinically unsaturated compound is oleic acid.
Claim 9
Dependent Claim
19 words
A process as claimed in claim 1, wherein the olefinically unsaturated compound is obtained by Friedel-Crafts polymerization of butene.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |