US3856731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waxy composition for preventing rubbery substance form ozone deterioration at medium and/or low temperature
Assignee: Individual
•
Filing: 1973-03-07
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Granted: 1974-12-24
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Expires: 1993-03-07
Abstract
Abstract A waxy composition containing 50 per cent or more by weight of normal chain hydrocarbons having from 26 to 29 carbon atoms, a method of utilizing said waxy composition for preventing rubbery substance from ozone deterioration at medium and/or low temperatures, and a rubbery article thus prevented from ozone deterioration at medium and/or low temperatures. The method comprises steps of mixing said waxy composition with raw rubber, subsequently vulcanizing the mixture, and leaving the vulcanized matter as it is for letting the waxy composition bloom on the surface of the matter. Results of some tests are disclosed.
Inventors
- 👤 T Shinomura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:41
CPC Classifications
C; C08; C08L; C08L21/00; C08L91/00; C08L91/06; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A METHOD OF PREVENTING A RUBBERY SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBERN STYRENE-BUTADIENE RUBBER, BUTADIENE RUBBER AND ALFIN RUBBER FROM OZONE DETERORATION AT TEMPERATURES BETWEEN -10*C AND 40*C, CONSISTING ESSENTIALLY OF THE STEPS OF MIXING A WAXY COMPOSITION WITH SAID RUBBERY SUBSTANCE IN RAW STATE, SAID WAXY COMPOSITION CONTAINING AT LEAST 50 PER CENT BY WEIGHT OF NORMALCHAIN SATURATED HYDROCARBONS HAVING FROM 26 TO 29 CARBON ATOMS, THE REMAINDER OF SAID WAX BEING ESSENTIALLY FREE OF AROMATIC COMPONENTS, ALIPHATIC UNSATURATES AND COMPONENTS REMOVABLE BY DEOILING WHICH SELECTIVELY REMOVES LOWER MOLECULAR WEIGHT OF FRACTIONS, SUBSEQUENTLY VULCANIZING SAID MIXTURE, AND LAVING SAID VULCANIZED MIXTURE AS IT IS FOR LETTING SAID WAXY COMPOSITION BLOOM ON THE SURFACE OF SAID VULCANIZED MIXTURE.
Claim 2
Independent Claim
121 words
A METHOD OF PREVENTING A RUBBERY SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBERN STYRENE-BUTADIENE RUBBER, BUTADIENE RUBBER AND ALFIN RUBBER FROM OZONE DETERORATION AT TEMPERATURES BETWEEN -10*C AND 40*C, CONSISTING ESSENTIALLY OF THE STEPS OF MIXING A WAXY COMPOSITION WITH SAID RUBBERY SUBSTANCE IN RAW STATE, SAID WAXY COMPOSITION CONTAINING AT LEAST 50 PER CENT BY WEIGHT OF NORMALCHAIN SATURATED HYDROCARBONS HAVING FROM 26 TO 29 CARBON ATOMS, THE REMAINDER OF SAID WAX BEING ESSENTIALLY FREE OF AROMATIC COMPONENTS, ALIPHATIC UNSATURATES AND COMPONENTS REMOVABLE BY DEOILING WHICH SELECTIVELY REMOVES LOWER MOLECULAR WEIGHT OF FRACTIONS, SUBSEQUENTLY VULCANIZING SAID MIXTURE, AND LAVING SAID VULCANIZED MIXTURE AS IT IS FOR LETTING SAID WAXY COMPOSITION BLOOM ON THE SURFACE OF SAID VULCANIZED MIXTURE.
Claim 3
Dependent Claim
96 words
A rubbery article of a rubber selected from the group consisting of natural rubber, styrenebutadiene rubber, butadiene rubber and Alfin rubber protected from ozone deterioration at temperatures between -10*C and 40*C by reason of the presence therein of a waxy composition with said rubbery substance in raw state, said waxy composition containing at least 50 per cent by weight of normal chain saturated hydrocarbons having from 26 to 29 carbon atoms, the remainder of said wax being essentially free of aromatic components, aliphatic unsaturates and components removable by deoiling which selectively removes lower molecular weight fractions.
Claim 4
Dependent Claim
96 words
A rubbery article of a rubber selected from the group consisting of natural rubber, styrenebutadiene rubber, butadiene rubber and Alfin rubber protected from ozone deterioration at temperatures between -10*C and 40*C by reason of the presence therein of a waxy composition with said rubbery substance in raw state, said waxy composition containing at least 50 per cent by weight of normal chain saturated hydrocarbons having from 26 to 29 carbon atoms, the remainder of said wax being essentially free of aromatic components, aliphatic unsaturates and components removable by deoiling which selectively removes lower molecular weight fractions.
Claim 5
Dependent Claim
78 words
A rubber composition comprising 100 parts of a rubber substance selected from the group consisting of natural rubber, styrene-butadiene rubber, butadiene rubber and Alfin rubber and about 2 parts of a wax, at least 50% of said wax consisting of straight chain saturated hydrocarbons, said hydrocarbon chains containing 26 to 29 carbon atoms, the remainder of said wax being essentially free of aromatic components, aliphatic unsaturates and components removable by deoiling which selectively removes lower molecular weight fractions.
Claim 6
Dependent Claim
78 words
A rubber composition comprising 100 parts of a rubber substance selected from the group consisting of natural rubber, styrene-butadiene rubber, butadiene rubber and Alfin rubber and about 2 parts of a wax, at least 50% of said wax consisting of straight chain saturated hydrocarbons, said hydrocarbon chains containing 26 to 29 carbon atoms, the remainder of said wax being essentially free of aromatic components, aliphatic unsaturates and components removable by deoiling which selectively removes lower molecular weight fractions.
References Cited (Backward Citations)
US3112285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |