US4031288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonding tire cord to rubber
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1975-06-18
•
Granted: 1977-06-21
•
Expires: 1995-06-18
Abstract
Abstract The bonding of tire cord to rubber is improved by first treating the surface of the tire cord with a solvent solution of a polyisocyanate in essentially small amounts and then treating the cord with an adhesive comprising a phenol/aldehyde resin, a phenol aldehyde resin blocked polyisocyanate and a rubber latex.
Inventors
- 👤 Roop S. Bhakuni
- 👤 Grover W. Rye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:22
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; Y10T428/2965; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31551; Y10T428/31562; Y10T428/31565; Y10T428/31725; Y10T428/31761; Y10T428/31786
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
117 words
A tire polyester cord the surface of which contains an effective amount and less than 0.5 part by weight per 100 parts of cord of a polyisocyanate having the following structural formula ##STR2## where n is greater than 1.2 and has a Brookfield viscosity measured at 25° C. using a No. 3 spindle revolving at 250 rpm of at least 1000 cps, said polyisocyanate being deposited from a solvent solution thereof as a first treatment and deposited thereon a second coating containing the addition product of a polyisocyanate and a water-soluble thermoplastic resin resulting from the reaction of an formaldehyde and a resorcinol, a resinous reaction product of a resorcinol and an formaldehyde and a rubber latex.
Claim 2
Dependent Claim
117 words
A tire polyester cord the surface of which contains an effective amount and less than 0.5 part by weight per 100 parts of cord of a polyisocyanate having the following structural formula ##STR2## where n is greater than 1.2 and has a Brookfield viscosity measured at 25° C. using a No. 3 spindle revolving at 250 rpm of at least 1000 cps, said polyisocyanate being deposited from a solvent solution thereof as a first treatment and deposited thereon a second coating containing the addition product of a polyisocyanate and a water-soluble thermoplastic resin resulting from the reaction of an formaldehyde and a resorcinol, a resinous reaction product of a resorcinol and an formaldehyde and a rubber latex.
Claim 3
Dependent Claim
12 words
The cord of claim 1 wherein the polyisocyanate is polymethylene polyphenyl isocyanate.
Claim 4
Dependent Claim
20 words
The cord of claim 2 wherein the polymethylene polyphenyl isocyanate has a Brookfield viscosity of 1500 cps at 25° C.
Claim 5
Dependent Claim
8 words
The cord of claim 1 made of polyester.
Claim 6
Dependent Claim
8 words
The cord of claim 1 made of polyamide.
Claim 7
Dependent Claim
10 words
The cord of claim 1 made of p-aminobenzoic acid polymer.
Claim 8
Independent Claim
128 words
A method of treating a polyethylene terephthalate cord with a first dip which comprises treating the cord with a solvent solution of a polyisocyanate having the following structural formula ##STR3## where n is greater than 1.2 and has a Brookfield viscosity measured at 25° C. using a No. 3 spindle revolving at 250 rpm of at least 1000 cps, removing the solvent from the treated cord to deposit less than 0.5 part by weight per 100 parts of cord of the polyisocyanate and then treating the cord with a second dip containing the addition product of a polyisocyanate and a water soluble thermoplastic resin resulting from the reaction of an formaldehyde with a phenol, a resinous reaction product of a phenol and an formaldehyde and a rubber latex.
Claim 9
Independent Claim
128 words
A method of treating a polyethylene terephthalate cord with a first dip which comprises treating the cord with a solvent solution of a polyisocyanate having the following structural formula ##STR3## where n is greater than 1.2 and has a Brookfield viscosity measured at 25° C. using a No. 3 spindle revolving at 250 rpm of at least 1000 cps, removing the solvent from the treated cord to deposit less than 0.5 part by weight per 100 parts of cord of the polyisocyanate and then treating the cord with a second dip containing the addition product of a polyisocyanate and a water soluble thermoplastic resin resulting from the reaction of an formaldehyde with a phenol, a resinous reaction product of a phenol and an formaldehyde and a rubber latex.
Claim 10
Dependent Claim
16 words
The method of claim 7 wherein the polyisocyanate in the first dip is polymethylene polyphenyl isocyanate.
Claim 11
Dependent Claim
22 words
The method of claim 8 wherein the polyisocyanate in the first dip has a Brookfield viscosity of 1500 cps at 25° C.
Claim 12
Dependent Claim
10 words
The method of claim 7 wherein the solvent is 1,1,1-trichlorethane.
Claim 13
Independent Claim
161 words
A method of treating a polyethylene terephthalate cord with a first dip which comprises treating the cord with a solvent containing a polyisocyanate having the following structural formula ##STR4## where n is greater than 1.2 and has a Brookfield viscosity measured at 25° C. using a No. 3 spindle revolving at 250 rpm of at least 1000 cps, removing the solvent by heating the treated cord at a temperature between about 150° F. and about 350° F. to deposit less than 0.5 part by weight per 100 parts of cord of the polyisocyanate, and then treating the cord with a second dip containing the addition product of a polyisocyanate and a water soluble thermoplastic resin resulting from the reaction of an formaldehyde with a resorcinol, a resinous reaction product of a resorcinol and an formaldehyde and a rubber latex and heating the adhesive treated cord at a temperature of at least 425° F. and below the melting point of the cord.
Claim 14
Independent Claim
161 words
A method of treating a polyethylene terephthalate cord with a first dip which comprises treating the cord with a solvent containing a polyisocyanate having the following structural formula ##STR4## where n is greater than 1.2 and has a Brookfield viscosity measured at 25° C. using a No. 3 spindle revolving at 250 rpm of at least 1000 cps, removing the solvent by heating the treated cord at a temperature between about 150° F. and about 350° F. to deposit less than 0.5 part by weight per 100 parts of cord of the polyisocyanate, and then treating the cord with a second dip containing the addition product of a polyisocyanate and a water soluble thermoplastic resin resulting from the reaction of an formaldehyde with a resorcinol, a resinous reaction product of a resorcinol and an formaldehyde and a rubber latex and heating the adhesive treated cord at a temperature of at least 425° F. and below the melting point of the cord.
Claim 15
Dependent Claim
20 words
A heat stable structure comprising rubber reinforced with the cord prepared in the manner of the method of claim 11.
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) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |