Patent EP0031398A2 successfully refreshed from Google Patents.
EP0031398A2
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EP
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Cured rubber skim stock compositions having improved metal adhesion and metal adhesion retention, and tyre having said improvement
Assignee: Bridgestone Firestone Inc
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Filing: 1980-07-29
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Granted: —
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Expires: 2000-07-29
Abstract
Abstract Disclosed is a composition for the improvement of the adhesion and adhesion retention between conventional rubber skim stock compositions, utilized in the manufacture of tires, conveyor belts, hoses and the like, and metallic reinforcement cords such as brassed steel. The invention composition is prepared by incorporating an inorganic salt of cobalt or nickel and a rosin-derived resin into the rubber stock prior to contacting the metallic reinforcement. Tests conducted with brass-plated and zinc-plated steel cords showed improved metal adhesion and metal adhesion retention with use of the rubber skim stock of this invention when compared to existing formulations.
Inventors
- 👤 James A. Davis
- 👤 Jung W. Kang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 00:48
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/10; C08K; C08K3/00; C08K3/10; C08K3/11; C08L; C08L21/00; C08L7/00; C08J2321/00; C08L93/00; C08L93/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
Cured rubber skim stock compositions having improved metal adhesion and metal adhesion retention properties, said composition comprising: 100 parts of a vulcanizable rubber stock; from about 2.0 to about 10.0 parts by weight of a rosin-derived resin, per 100 parts of the rubber component in said rubber stock; and, from about 0.05 to about 10.0 parts by weight of a cobalt salt, per 100 parts of the rubber component in said rubber skim stock.
Claim 2
Dependent Claim
74 words
Cured rubber skim stock compositions having improved metal adhesion and metal adhesion retention properties, said composition comprising: 100 parts of a vulcanizable rubber stock; from about 2.0 to about 10.0 parts by weight of a rosin-derived resin, per 100 parts of the rubber component in said rubber stock; and, from about 0.05 to about 10.0 parts by weight of a cobalt salt, per 100 parts of the rubber component in said rubber skim stock.
Claim 3
Dependent Claim
18 words
Cured rubber skim stock composition as set forth in claim 1, wherein said cobalt salt is cobalt hydrate.
Claim 4
Dependent Claim
38 words
Cured rubber skim stock compositions, as set forth in claims 1 or 2, wherein said metal is present in a metallic reinforcing cord selected from the group consisting of steel cord, brass-plated steel cord and zinc-plated steel cord.
Claim 5
Dependent Claim
72 words
A tire having metallic reinforcing elements embedded in vulcanized rubber skim stock, said skim stock being characterized by having incorporated therein: from about 2.0 to about 10.0 parts by weight of a rosin-derived resin, per 100 parts of the rubber component in said rubber skim stock; and, from about 0.05 to about 10.0 parts by weight of a cobalt salt, per 100 parts of the rubber component in said rubber skim stock.
Claim 6
Dependent Claim
72 words
A tire having metallic reinforcing elements embedded in vulcanized rubber skim stock, said skim stock being characterized by having incorporated therein: from about 2.0 to about 10.0 parts by weight of a rosin-derived resin, per 100 parts of the rubber component in said rubber skim stock; and, from about 0.05 to about 10.0 parts by weight of a cobalt salt, per 100 parts of the rubber component in said rubber skim stock.
Claim 7
Dependent Claim
37 words
A tire, as set forth in claim 4, wherein the metallic reinforcing elements are selected from the group consisting of steel cord, brass-plated steel cord and zinc-plated steel cord and wherein said cobalt salt is cobalt hydrate.
References Cited (Backward Citations)
No citation records indexed.
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