US4719266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vulcanization formulations with cobalt compounds
Assignee: Goodyear Tire and Rubber Co
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Filing: 1986-07-22
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Granted: 1988-01-12
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Expires: 2006-07-22
Abstract
Abstract The use of metal salts in vulcanizable elastomer compounds is described. In sufficient amounts, the metal salts function as both vulcanization accelerators and adhesion promoters for rubber to metal adhesion, thus eliminating the need for a separate ingredient for each purpose. Certain of the salts also promote the adhesion of the elastomer to metal adherends which have heretofore been unknown, for example, to a zinc surface. Curing characteristics of elastomer formulations using the metal salts are comparable to those using prior art accelerators.
Inventors
- 👤 David P. Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:50
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K3/00; C08K3/10; C08K3/11; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31707
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
An elastomer formulation, consisting essentially of: a sulfur curable elastomer selected from the group consisting of natural rubber, copolymers of styrene and butadiene, polybutadiene, synthetic polyisoprene, and chlorinated rubbers; a quantity of sulfur; conventional compounding ingredients other than accelerators; and at least one cobalt salt accelerator consisting essentially of a salt selected from the group consisting of cobalt octoate, cobalt naphthenate, cobalt sterate, cobalt abietate and cobalt hydroxide, said at least one cobalt salt accelerator being present in the formulation in an amount of from about 2 to about 12 parts per 100 parts by weight of said elastomer, said at least one cobalt salt accelerator being the sole accelerator present; said formulation being curable and adherent to the surface of a metal selected from the group consisting of steel and zinc.
Claim 2
Dependent Claim
132 words
An elastomer formulation, consisting essentially of: a sulfur curable elastomer selected from the group consisting of natural rubber, copolymers of styrene and butadiene, polybutadiene, synthetic polyisoprene, and chlorinated rubbers; a quantity of sulfur; conventional compounding ingredients other than accelerators; and at least one cobalt salt accelerator consisting essentially of a salt selected from the group consisting of cobalt octoate, cobalt naphthenate, cobalt sterate, cobalt abietate and cobalt hydroxide, said at least one cobalt salt accelerator being present in the formulation in an amount of from about 2 to about 12 parts per 100 parts by weight of said elastomer, said at least one cobalt salt accelerator being the sole accelerator present; said formulation being curable and adherent to the surface of a metal selected from the group consisting of steel and zinc.
Claim 3
Dependent Claim
28 words
An elastomer formulation according to claim 1, wherein said at least one cobalt salt accelerator is selected from the group consisting of cobalt abietate, cobalt naphthenate,and cobalt hydroxide.
Claim 4
Dependent Claim
13 words
An elastomer formulation according to claim 1 wherein said elastomer is natural rubber.
Claim 5
Dependent Claim
33 words
A formulation according to claim 1, wherein said metal comprises a plurality of wires embedded in said formulation; and wherein the vulcanized formulation is used in the manufacture of a reinforced rubber article.
Claim 6
Dependent Claim
35 words
A formulation according to claim 1, wherein at least one cobalt salt accelerator is cobalt naphthenate present in said formulation in an amount of from about 4 to about 7 parts per hundred parts elastomer.
References Cited (Backward Citations)
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Cited
GB1389800A
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US3993847A
Cited
US4203874A
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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) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |