US3658639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated articles from sulfur vulcanizable elastomeric blends comprising diolefin rubber and epdm terpolymers
Assignee: DSM Copolymer Inc
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Filing: 1969-11-21
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Granted: 1972-04-25
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Expires: 1989-11-21
Abstract
Abstract This invention relates to laminates comprising sulfur vulcanizable blends prepared from a diolefin rubber and an interpolymer comprising ethylene, at least one straight chain monoolefin containing three to 16 carbon atoms and a polyunsaturated bridged ring hydrocarbon containing at least one ethylenic double bond in one of the bridged rings.
Inventors
- 👤 Kenneth H Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:10
CPC Classifications
C; C08; C08L; C08L21/00; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/04; C08K5/09; C08L15/00; C08L23/00; C08L23/02; C08L23/16; C08L5/00; C08L5/14; C08L9/00; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31909; Y10T428/31924
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
19 words
The article of claim 1 wherein the said rubbery interpolymer contains 10-20 carbon-to-carbon double bonds per 1,000 carbon atoms.
Claim 2
Dependent Claim
46 words
The article of claim 1 wherein the uncured compounded rubber stock is shaped to conform with the general configuration of a tread for a pneumatic tire, and the layer of rubbery polymer in contact therewith is on the surface area to be bonded with the carcass.
Claim 3
Dependent Claim
67 words
The article of claim 1 wherein the uncured compounded rubber stock is reinforced with tire cord embedded therein and is shaped to conform with the general configuration of a ply for the carcass of a pneumatic tire, and the layer of rubbery polymer is contact therewith is on the surface area to be bonded with a component part of the tire which contains an incompatible rubbery polymer.
Claim 4
Dependent Claim
10 words
The cured laminate prepared of the article of claim 1.
Claim 5
Dependent Claim
6 words
The cured article of claim 4.
Claim 6
Dependent Claim
86 words
An article as claimed in claim 1 in which the sulfur vulcanizable elastomers have a mol ratio of chemically bound ethylene to the monoolefin containing three to 16 carbon atoms between 80:20 and 20:80 and containing less than seven carbon-to-carbon double bonds per 1,000 carbon atoms and in which the rubbery interpolymer has a mol ratio of chemically bound ethylene to the monoolefin containing three to 16 carbon atoms between 80: 20 and 20:80 and containing seven to 25 carbon-to-carbon double bonds per 1,000 carbon atoms.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |