Patent US3857730A successfully refreshed from Google Patents.
US3857730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding polyesters to rubber
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1973-06-11
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Granted: 1974-12-31
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Expires: 1993-06-11
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 consists essentially of an alkaline aqueous emulsion of a minor amount by weight of a mixture of a major amount by weight of a rubbery vinyl pyridine copolymer and a minor amount by weight of a heat reactable 2,6bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, wherein said emulsion is essentially free of alkali metal materials and wherein the emulsifier used in the emulsion is an ammonium salt or soap. High aged H-adhesions are obtained with this process.
Inventors
- 👤 E Kalafus
- 👤 R Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:42
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31859; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
136 words
A METHOD FOR ADHERING A POLYESTER REINFORCING ELEMENT TO A RUBBER COMPOUND WHICH COMPRISES DIPPING SAID ELEMENT IN A DIP CONSISTING ESSENTIALLY OF AN AQUEOUS ALKALINE EMULSION CONSISTING ESSENTIALLY OF A MINOR AMOUNT BY WEIGHT OF A MIXTURE OF A MAJOR AMOUNT BY WEIGHT OF A RUBBERY VINYL PYRIDINE COPOLYMER AND A MINOR AMOUNT BY WEIGHT OF A HEAT REACTABLE 2,6-BIS(2,4-DIHYDROXY PHENYLMETHYL)-4-CHLOROPHENOL COMPOSITION DRYING THE DIPPED ELEMENT, AND COMBINING SAID DIPPED AND DRIVED ELEMENT WITH A VULCANIZABLE RUBBER COMPOUND AND VULCANIZING THE RESULTANT PRODUCT, SAID EMULSION BEING ESSENTIALLY FREE OF ALKALI METAL MATERIALS AND THE EMULSIFIER USED IN SAID EMULSION BEING WATER SOLUBLE AND BEING SELECTED FROM THE GROUP CONSISTING OF AN AMMONIUM SULFATE OF AN ALIPHATIC ALCOHOL, AN AMMONIUM PHOSPHATE OF AN ALIPHATIC ALCOHOL, AND AN AMMONIUM SOAP OF A CARBOXYLIC ACID AND MIXTURES THEREOF.
Claim 2
Independent Claim
136 words
A METHOD FOR ADHERING A POLYESTER REINFORCING ELEMENT TO A RUBBER COMPOUND WHICH COMPRISES DIPPING SAID ELEMENT IN A DIP CONSISTING ESSENTIALLY OF AN AQUEOUS ALKALINE EMULSION CONSISTING ESSENTIALLY OF A MINOR AMOUNT BY WEIGHT OF A MIXTURE OF A MAJOR AMOUNT BY WEIGHT OF A RUBBERY VINYL PYRIDINE COPOLYMER AND A MINOR AMOUNT BY WEIGHT OF A HEAT REACTABLE 2,6-BIS(2,4-DIHYDROXY PHENYLMETHYL)-4-CHLOROPHENOL COMPOSITION DRYING THE DIPPED ELEMENT, AND COMBINING SAID DIPPED AND DRIVED ELEMENT WITH A VULCANIZABLE RUBBER COMPOUND AND VULCANIZING THE RESULTANT PRODUCT, SAID EMULSION BEING ESSENTIALLY FREE OF ALKALI METAL MATERIALS AND THE EMULSIFIER USED IN SAID EMULSION BEING WATER SOLUBLE AND BEING SELECTED FROM THE GROUP CONSISTING OF AN AMMONIUM SULFATE OF AN ALIPHATIC ALCOHOL, AN AMMONIUM PHOSPHATE OF AN ALIPHATIC ALCOHOL, AND AN AMMONIUM SOAP OF A CARBOXYLIC ACID AND MIXTURES THEREOF.
Claim 3
Independent Claim
207 words
A method for adhering a polyester reinforcing element to a rubber compound which comprises treating said element with an adhesive composition consisting essentially of an aqueous alkaline emulsion of from about 10 to 30 percent by weight as dry solids of a mixture of a rubbery vinyl pyridine copolymer and a substantially heat reactable 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, the parts by weight ratio dry 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 from about 3 to 7 percent by weight solids, cooling said treated element, combining said cooled treated element with an unvulcanized vulcanizable rubber compound, and vulcanizing the resultant product, said heat treatment being conducted at temperatures of from about 300* to 500*F. for from about 30 to 150 seconds, said emulsion being essentially free of alkali metal materials, and the emulsifier used in said emulsion being water soluble and being selected from the group consisting of an ammonium sulfate of an aliphatic alcohol, an ammonium phosphate of an aliphatic alcohol, and an ammonium soap of a carboxylic acid and mixtures thereof.
Claim 4
Independent Claim
207 words
A method for adhering a polyester reinforcing element to a rubber compound which comprises treating said element with an adhesive composition consisting essentially of an aqueous alkaline emulsion of from about 10 to 30 percent by weight as dry solids of a mixture of a rubbery vinyl pyridine copolymer and a substantially heat reactable 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, the parts by weight ratio dry 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 from about 3 to 7 percent by weight solids, cooling said treated element, combining said cooled treated element with an unvulcanized vulcanizable rubber compound, and vulcanizing the resultant product, said heat treatment being conducted at temperatures of from about 300* to 500*F. for from about 30 to 150 seconds, said emulsion being essentially free of alkali metal materials, and the emulsifier used in said emulsion being water soluble and being selected from the group consisting of an ammonium sulfate of an aliphatic alcohol, an ammonium phosphate of an aliphatic alcohol, and an ammonium soap of a carboxylic acid and mixtures thereof.
Claim 5
Dependent Claim
69 words
A method according to claim 2, where said rubbery vinyl pyridine copolymer is a copolymer of from about 60 to 80% by weight of butadiene-1,3, from 7 to 32 percent by weight of styrene, and from 7 to 22 percent 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 6
Dependent Claim
20 words
A method according to claim 3 in which said emulsifier is the ammonium sulfate of a long chain aliphatic alcohol.
Claim 7
Dependent Claim
20 words
A method according to claim 3 in which said emulsifier is the ammonium phosphate of a long chain aliphatic alcohol.
Claim 8
Dependent Claim
19 words
A method according to claim 3 in which said emulsifier is an ammonium soap of an aliphatic monocarboxylic acId.
Claim 9
Dependent Claim
22 words
A method according to claim 3 where said reinforcing element is a cord of linear long chain synthetic substantially crystalline poly(ethylene terephthalate).
Claim 10
Dependent Claim
82 words
A polyester reinforcing element useful in reinforcing rubber and containing from about 3 to 7 percent by weight of said element of an adhesive useful for bonding said element to a vulcanizable rubber on vulcanization of said rubber, said adhesive consisting essentially of a major amount by weight of a rubbery vinyl pyridine copolymer and a minor amount by weight of a heat reacted 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, said adhesive being essentially free of alkali metal materials and of ammonia or ammonium ions.
Claim 11
Dependent Claim
82 words
A polyester reinforcing element useful in reinforcing rubber and containing from about 3 to 7 percent by weight of said element of an adhesive useful for bonding said element to a vulcanizable rubber on vulcanization of said rubber, said adhesive consisting essentially of a major amount by weight of a rubbery vinyl pyridine copolymer and a minor amount by weight of a heat reacted 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, said adhesive being essentially free of alkali metal materials and of ammonia or ammonium ions.
Claim 12
Dependent Claim
25 words
A polyester reinforcing element according to claim 8 in which said element is a cord of a linear long chain synthetic substantially crystalline poly(ethylene terephthalate).
Claim 13
Dependent Claim
103 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 consisting essentially of a deposit of a heat set mixture of a major amount by weight of a rubbery vinyl pyridine copolymer and a minor amount by weight of a heat reactable 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, said adhesive composition forming a bond between said element and said rubber, and said adhesive further being essentially free of alkali metal materials and of ammonia or ammonium ions.
Claim 14
Dependent Claim
103 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 consisting essentially of a deposit of a heat set mixture of a major amount by weight of a rubbery vinyl pyridine copolymer and a minor amount by weight of a heat reactable 2,6-bis(2,4-dihydroxy phenylmethyl)-4-chlorophenol composition, said adhesive composition forming a bond between said element and said rubber, and said adhesive further being essentially free of alkali metal materials and of ammonia or ammonium ions.
References Cited (Backward Citations)
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 |