US3964950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesion/bonding dip for tire reinforcement fabrics
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1974-12-09
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Granted: 1976-06-22
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Expires: 1994-12-09
Abstract
Abstract Rubber compounds are readily bonded to polyester reinforcing elements, particularly tire cords of polyester fibers, using a one-step dip process in which the dip containing an alkaline aqueous dispersion of a mixture of a major amount by weight of a rubbery vinyl pyridine/styrene/butadiene terpolymer, a resorcinol-formaldehyde reaction product, and a minor amount by weight of a high half-life heat reactable peroxide. Good adhesion of the cords to the rubber compound are obtained with this process.
Inventors
- 👤 Hubert J. Boles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:40
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
209 words
A method for adhering a polyester reinforcing element to a vulcanized conjugated diene rubber compound which comprises treating said element with a composition comprising an aqueous alkaline dispersion of from about 10 to 30 percent by weight (as dry solids) of a mixture of about 65 to 89 parts of a rubbery vinyl pyridine terpolymer containing about 50 to 95 percent of a conjugated diolefin, about 5 to 40 percent of vinyl pyridine and about 0 to 40 percent of a styrene, about 10 to 30 parts of a resorcinol-formaldehyde resin and from about 0.5 to 5 parts of a heat reactable peroxide having a one-hour, half-life at 100°-160°C. wherein the peroxide is added to the dip after the vinyl pyridine terpolymer is polymerized; heat treating said element to remove the water and to cure the solids from said composition and to deposit on said element from said composition a total of from about 3 to 7 percent by weight (solids), said heat treatment being conducted at temperatures of from about 300° to 500°F. for from about 30 to 150 seconds, cooling said treated element, combining said cooled treatment element with an unvulcanized vulcanizable rubber consisting essentially of conjugated diene as the major elastomer component, and vulcanizing the same.
Claim 2
Independent Claim
209 words
A method for adhering a polyester reinforcing element to a vulcanized conjugated diene rubber compound which comprises treating said element with a composition comprising an aqueous alkaline dispersion of from about 10 to 30 percent by weight (as dry solids) of a mixture of about 65 to 89 parts of a rubbery vinyl pyridine terpolymer containing about 50 to 95 percent of a conjugated diolefin, about 5 to 40 percent of vinyl pyridine and about 0 to 40 percent of a styrene, about 10 to 30 parts of a resorcinol-formaldehyde resin and from about 0.5 to 5 parts of a heat reactable peroxide having a one-hour, half-life at 100°-160°C. wherein the peroxide is added to the dip after the vinyl pyridine terpolymer is polymerized; heat treating said element to remove the water and to cure the solids from said composition and to deposit on said element from said composition a total of from about 3 to 7 percent by weight (solids), said heat treatment being conducted at temperatures of from about 300° to 500°F. for from about 30 to 150 seconds, cooling said treated element, combining said cooled treatment element with an unvulcanized vulcanizable rubber consisting essentially of conjugated diene as the major elastomer component, and vulcanizing the same.
Claim 3
Dependent Claim
24 words
A method according to claim 1 where said peroxide is added as the last ingredient prior to the time of treatment of said element.
Claim 4
Dependent Claim
21 words
A method according to claim 1 where said reinforcing element is a cord of linear long-chain synthetic substantially crystalline poly(ethylene terephthalate).
Claim 5
Dependent Claim
112 words
A bonded composite material comprising a polyester element embedded in a vulcanized rubber, said element containing a total of from about 3 to 7 percent by weight (dry) based on the weight of said element of an adhesive composition comprised of a deposit of a cured mixture of a rubbery vinyl pyridine terpolymer, resorcinol-formaldehyde resin and about 0.4 to about 4.0 percent based upon the dry weight of the deposit of a residue of heat reacted peroxide which had a one-hour, half-life at 110°-160°C and had been added to the adhesive composition after the polymerization of the vinyl pyridine terpolymer, said adhesive composition forming a bond between said element and said rubber.
Claim 6
Dependent Claim
112 words
A bonded composite material comprising a polyester element embedded in a vulcanized rubber, said element containing a total of from about 3 to 7 percent by weight (dry) based on the weight of said element of an adhesive composition comprised of a deposit of a cured mixture of a rubbery vinyl pyridine terpolymer, resorcinol-formaldehyde resin and about 0.4 to about 4.0 percent based upon the dry weight of the deposit of a residue of heat reacted peroxide which had a one-hour, half-life at 110°-160°C and had been added to the adhesive composition after the polymerization of the vinyl pyridine terpolymer, said adhesive composition forming a bond between said element and said rubber.
Claim 7
Dependent Claim
31 words
A bonded composite material according to claim 4 where said peroxide is added as the last ingredient prior to the time of the adhesive composition is deposited on the polyester element.
Claim 8
Dependent Claim
22 words
A bonded composite material according to claim 5 where said element is a cord of linear long-chain synthetic substantially crystalline poly(ethylene terephthalate).
Claim 9
Dependent Claim
62 words
A bonded composite material according to claim 4 where said rubbery vinyl pyridine terpolymer is a terpolymer of about 70 percent by weight of 1,3-butadiene, 15 percent by weight of styrene, and 15 percent by weight of 2-vinyl pyridine and where the parts by weight ratio of said rubbery vinyl pyridine terpolymer to said peroxide composition is from about 100:1.0 to 100:3.0.
Claim 10
Dependent Claim
22 words
A bonded composite material according to claim 7 where said element is a cord of linear long-chain synthetic substantially crystalline poly(ethylene terephthalate).
Claim 11
Dependent Claim
65 words
A composition consisting essentially of an aqueous alkaline dispersion of a minor amount by weight of a mixture of a rubbery vinyl pyridine terpolymer, a resorcinol-formaldehyde resin and from about 0.08 to about 0.80 percent based upon the aqueous composition of a heat reactable peroxide having a one-hour, half-life at 110°-160°C. which peroxide is added to the composition after the vinyl pyridine terpolymer is polymerized.
Claim 12
Dependent Claim
65 words
A composition consisting essentially of an aqueous alkaline dispersion of a minor amount by weight of a mixture of a rubbery vinyl pyridine terpolymer, a resorcinol-formaldehyde resin and from about 0.08 to about 0.80 percent based upon the aqueous composition of a heat reactable peroxide having a one-hour, half-life at 110°-160°C. which peroxide is added to the composition after the vinyl pyridine terpolymer is polymerized.
Claim 13
Dependent Claim
16 words
A composition according to claim 9 in which said peroxide is added as the last ingredient.
Claim 14
Dependent Claim
49 words
A composition according to claim 10 in which said terpolymer is a terpolymer of from about 60 to 80 percent by weight of 1,3-butadiene, 10 to 30 percent by weight of styrene and 10 to 30 percent by weight of 2-vinyl pyridine, and where said peroxide is an ester.
Claim 15
Dependent Claim
25 words
A composition according to claim 11 in which the ratio by parts of said terpolymer to said peroxide composition is from about 100:1.0 to 100:3.0.
Claim 16
Dependent Claim
35 words
A composition according to claim 12 in which said terpolymer is a terpolymer of about 70 percent by weight of 1,3-butadiene, 15 percent by weight of styrene and 15 percent by weight of 2-vinyl pyridine.
References Cited (Backward Citations)
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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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |