US3857726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive dip for bonding rubber to bright steel wire
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1973-07-05
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Granted: 1974-12-31
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Expires: 1993-07-05
Abstract
Abstract Rubber compounds are readily bonded to bright steel or bright alloy steel reinforcing elements, particularly tire cords, using a dip system consisting essentially of an alkaline aqueous dispersion containing a mixture of a rubbery vinyl pyridine copolymer and a heat reactable 2,6-bis(2,4-hydroxy phenylmethyl)4-chlorophenol composition. Improved adhesion between the wire and the rubber is obtained with this dip system.
Inventors
- 👤 Gils G Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:10
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A METHOD FOR ADHERING A BRIGHT STEEL OR BRIGHT ALLOY STEEL REINFORCING ELEMENT OF A RUBBER COMPOUND WITH COMPRISES: A. DIPPING SAID ELEMENT IN A DIP CONSISTING ESSENTIALLY OF A AQUEOUS ALKALINE DISPERSION CONTAINING A MIXTURE OF A RUBBERY VINYL PYRIDINE COPOLYMER AND A HEAT REACTABLE 2,6-BIS(2,4DIHYDROXY PHENYLMETHYL)-4-CHLOROPHENOL COMPOSITION; B. CURING SAID DIPPED ELEMENT; C. COMBINING SAID DIPPED AND CURED ELEMENT WITH A VULCANIZABLE RUBBER COMPOUND; AND D. VULCANIZING THE RESULTANT PRODUCT.
Claim 2
Independent Claim
72 words
A METHOD FOR ADHERING A BRIGHT STEEL OR BRIGHT ALLOY STEEL REINFORCING ELEMENT OF A RUBBER COMPOUND WITH COMPRISES: A. DIPPING SAID ELEMENT IN A DIP CONSISTING ESSENTIALLY OF A AQUEOUS ALKALINE DISPERSION CONTAINING A MIXTURE OF A RUBBERY VINYL PYRIDINE COPOLYMER AND A HEAT REACTABLE 2,6-BIS(2,4DIHYDROXY PHENYLMETHYL)-4-CHLOROPHENOL COMPOSITION; B. CURING SAID DIPPED ELEMENT; C. COMBINING SAID DIPPED AND CURED ELEMENT WITH A VULCANIZABLE RUBBER COMPOUND; AND D. VULCANIZING THE RESULTANT PRODUCT.
Claim 3
Dependent Claim
11 words
The reinforcing element-rubber composite produced by the method of claim 1.
Claim 4
Dependent Claim
33 words
The method of claim 1 including the preliminary step of pretreating said element with an aqueous solution containing a minor amount of a material selected from an oxidizing agent and a phosphatizing agent.
Claim 5
Independent Claim
162 words
A method for adhering a bright steel or bright alloy steel reinforcing element to a rubber compound which comprises treating said element with an adhesive composition consisting essentially of an aqueous alkaline dispersion of from about 10 to 30% by weight as dry solids of a mixture of a rubbery vinyl pyridine copolymer and a heat reactable 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, the parts by weight ratio of said copolymer to said chlorophenolic composition being from about 100:10 to 100:75, heat treating said element to remove the water and to heat-set the solids from said adhesive composition and to deposit on said element from said adhesive composition a total of about 0.5% by weight solids based on the weight of said element, said heat treatment being conducted at temperatures of from about 300* to about 500*F. for from about 30 to about 150 seconds; cooling said treated element, combining said cooled treated element with an unvulcanized vulcanizable rubber compound, and vulcanizing the resultant product.
Claim 6
Independent Claim
162 words
A method for adhering a bright steel or bright alloy steel reinforcing element to a rubber compound which comprises treating said element with an adhesive composition consisting essentially of an aqueous alkaline dispersion of from about 10 to 30% by weight as dry solids of a mixture of a rubbery vinyl pyridine copolymer and a heat reactable 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, the parts by weight ratio of said copolymer to said chlorophenolic composition being from about 100:10 to 100:75, heat treating said element to remove the water and to heat-set the solids from said adhesive composition and to deposit on said element from said adhesive composition a total of about 0.5% by weight solids based on the weight of said element, said heat treatment being conducted at temperatures of from about 300* to about 500*F. for from about 30 to about 150 seconds; cooling said treated element, combining said cooled treated element with an unvulcanized vulcanizable rubber compound, and vulcanizing the resultant product.
Claim 7
Dependent Claim
67 words
A method according to claim 4 where said rubbery vinyl pyridine copolymer is a copolymer of from about 60 to 80% by weight of butadiene-1,3, from 7 to 22% by weight of styrene, and from 7 to 22% by weight of 2-vinyl pyridine, and where said chlorophenolic composition has an average molecular weight of up to about 800 and a melting point of up to about 240*C.
Claim 8
Dependent Claim
11 words
The reinforcing element-rubber composite produced by the method of claim 4.
References Cited (Backward Citations)
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US3586568A
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US3677809A
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US3798051A
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |