Patent US4297159A successfully refreshed from Google Patents.
US4297159A
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Method to directly bond rubber to metal
Assignee: Individual
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Filing: 1979-07-11
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Granted: 1981-10-27
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Expires: 1999-07-11
Abstract
Abstract Process for the direct joining of rubber to metal surfaces by vulcanization using a rubber mixture containing the additives common for sulfur vulcanization wherein either the rubber mixture contains additionally tellurium, tellurium alloys and/or tellurium compounds as bonding aid, or that tellurium, tellurium alloy and/or tellurium compound is applied on the metal surface before vulcanizing.
Inventors
- 👤 Bohuslav Dobias
- 👤 Klaus Heckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:47
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; B; B60; B60C; B60C9/00; B60C9/0007; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12562; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
A process for directly bonding a rubber composition to metal surfaces comprises: (a) contacting the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel with a composition comprising a vulcanizable rubber and conventional rubber-sulfur vulcanization compounding ingredients, a bonding aid selected from the group consisting of elemental tellurium and organotellurium compounds being used to improve the bond between said metal surface and said composition by incorporation thereof in said composition or by application thereof directly to said metal surface; and (b) subjecting the product of step (a) to pressure and temperature conditions sufficient to effect the vulcanization of said composition.
Claim 2
Dependent Claim
110 words
A process for directly bonding a rubber composition to metal surfaces comprises: (a) contacting the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel with a composition comprising a vulcanizable rubber and conventional rubber-sulfur vulcanization compounding ingredients, a bonding aid selected from the group consisting of elemental tellurium and organotellurium compounds being used to improve the bond between said metal surface and said composition by incorporation thereof in said composition or by application thereof directly to said metal surface; and (b) subjecting the product of step (a) to pressure and temperature conditions sufficient to effect the vulcanization of said composition.
Claim 3
Dependent Claim
28 words
The process according to claim 1 wherein the amount of tellurium, in elemental form, is between 0.01 to 5 weight % of the rubber component of said composition.
Claim 4
Dependent Claim
29 words
The process according to claim 1 wherein said organotellurium compounds are selected from the group consisting of di-n-butyl tellurium, diethyl tellurium, dimethyl tellurium, dimethyl telluride iodide and diphenyl ditelluride.
Claim 5
Dependent Claim
92 words
In a process for directly bonding a rubber composition to metal surfaces wherein the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel is contacted with a vulcanizable rubber composition containing conventional rubber-sulfur vulcanization compounding ingredients and the resulting assembly is subjected to vulcanizing conditions, the improvement wherein a compound selected from the group consisting of elemental tellurium and organotellurium compounds is utilized as a bonding aid by incorporation thereof in said composition or by application thereof directly to said metal surface.
Claim 6
Dependent Claim
92 words
In a process for directly bonding a rubber composition to metal surfaces wherein the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel is contacted with a vulcanizable rubber composition containing conventional rubber-sulfur vulcanization compounding ingredients and the resulting assembly is subjected to vulcanizing conditions, the improvement wherein a compound selected from the group consisting of elemental tellurium and organotellurium compounds is utilized as a bonding aid by incorporation thereof in said composition or by application thereof directly to said metal surface.
Claim 7
Dependent Claim
100 words
A process for directly bonding a rubber composition to a metal surface comprises: (a) contacting the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel with a composition comprising a vulcanizable rubber and conventional rubber-sulfur vulcanization compounding ingredients, said composition also containing a bonding aid selected from the group consisting of elemental tellurium, tellurium alloys and organotellurium compounds to improve the bond between said metal surface and said composition; and (b) subjecting the product of step (a) to pressure and temperature conditions sufficient to effect the vulcanization of said composition.
Claim 8
Dependent Claim
100 words
A process for directly bonding a rubber composition to a metal surface comprises: (a) contacting the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel with a composition comprising a vulcanizable rubber and conventional rubber-sulfur vulcanization compounding ingredients, said composition also containing a bonding aid selected from the group consisting of elemental tellurium, tellurium alloys and organotellurium compounds to improve the bond between said metal surface and said composition; and (b) subjecting the product of step (a) to pressure and temperature conditions sufficient to effect the vulcanization of said composition.
Claim 9
Dependent Claim
30 words
The process according to claim 5 wherein said tellurium alloys are selected from the group consisting of the tellurides of iron, cobalt, nickel, copper, tungsten, lead, zinc, tin and manganese.
Claim 10
Dependent Claim
24 words
The process of claim 5 in which the amount of sulfur incorporated as a vulcanization compounding ingredient is from 3 to 7.5 parts phr.
Claim 11
Dependent Claim
24 words
The process of claim 5 in which said tellurium alloys are selected from the group consisting of the tellurides of iron, copper and lead.
Claim 12
Dependent Claim
94 words
A process for directly bonding a rubber composition to a metal surface comprises: (a) applying a bonding aid selected from the group consisting of elemental tellurium and organotellurium compounds directly to the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel; (b) contacting the thus treated metal surface with a composition comprising a vulcanizable rubber and conventional rubber-sulfur vulcanization compounding ingredients; and (c) subjecting the product of steps (a) and (b) to pressure and temperature conditions sufficient to effect the vulcanization of said composition.
Claim 13
Dependent Claim
94 words
A process for directly bonding a rubber composition to a metal surface comprises: (a) applying a bonding aid selected from the group consisting of elemental tellurium and organotellurium compounds directly to the surface of a metal selected from the group consisting of iron, copper, brass, zinc, aluminum, bronze and brass-plated steel; (b) contacting the thus treated metal surface with a composition comprising a vulcanizable rubber and conventional rubber-sulfur vulcanization compounding ingredients; and (c) subjecting the product of steps (a) and (b) to pressure and temperature conditions sufficient to effect the vulcanization of said composition.
Claim 14
Dependent Claim
24 words
The process of claim 9 in which the amount of sulfur incorporated as a vulcanization compounding ingredient is from 3 to 7.5 parts phr.
Claim 15
Dependent Claim
25 words
The process of claim 9 in which said organotellurium compounds are selected from the group consisting of di-n-butyl tellurium, diethyl tellurium, dimethyl tellurium and dimethylditelluride.
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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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |