US3661623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat stable polyester cord reinforced rubber structure and method of making
Assignee: Goodyear Tire and Rubber Co
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Filing: 1969-10-03
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Granted: 1972-05-09
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Expires: 1989-10-03
Abstract
Abstract A method of making a heat stable polyester cord reinforced rubber structure, such as a tire, and the resultant structure, which method comprises applying an adhesive to the polyester cord and depositing in the vicinity of the adhesive a heat stabilizing agent selected from a tris substituted-aziridinyl phosphine oxide or sulfide, a polycarbodiimide, bis(tri-n-butyltin) oxide and a hindered phenol.
Inventors
- 👤 Roop S Bhakuni
- 👤 John G Morgan
- 👤 Terry F Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:32
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08K; C08K5/00; C08K5/0008; C08K5/005; C08J2321/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
In the method of making a heat stable cord to rubber structure wherein an adhesive composition is deposited on a polyester cord as a means of providing a bond between the cord and the rubber, the improvement comprising depositing in the vicinity of the adhesive a stabilizing amount of at least one heat stabilizing agent selected from the group consisting of a tris substituted-aziridinyl phosphine oxide, a tris substituted-aziridinyl phosphine sulfide, a polycarbodiimide, bis(tri-n-butyltin) oxide and a hindered phenol having the general formula:
Claim 2
Dependent Claim
49 words
The method of claim 2 wherein the adhesive composition is applied to the cord in two separate dips, the first dip containing a water soluble or dispersable epoxy resin and the second dip containing a rubber latex and a phenol/formaldehyde resin, the stabilizer being in one of the dips.
Claim 3
Dependent Claim
30 words
The method of claim 3 wherein the epoxy resin is formed from the reaction of epichlorohydrin and a material selected from the group consisting of glycerin, pentaerythritol, and bis-phenol A.
Claim 4
Dependent Claim
14 words
The method of claim 4 wherein the stabilizer is tris (1-(2-methyl) aziridinyl) phosphine oxide.
Claim 5
Dependent Claim
15 words
The method of claim 4 whErein the stabilizing agent is added to the epoxy resin.
Claim 6
Dependent Claim
15 words
The method of claim 6 wherein the stabilizing agent is tris (1-(2-methyl) aziridinyl) phosphine oxide.
Claim 7
Dependent Claim
44 words
The method of claim 2 wherein the adhesive is applied to the cord in two separate dips, the first dip containing a resorcinol/formaldehyde blocked polyisocyanate in combination with a resorcinol/formaldehyde/rubber latex composition and the second dip containing a rubber latex and a phenol/formaldehyde resin.
Claim 8
Dependent Claim
23 words
The method of claim 8 wherein the stabilizer is added to the resorcinol/formaldehyde resin prior to its use in making the blocked polyisocyanate.
Claim 9
Dependent Claim
16 words
The method of claim 9 wherein the stabilizer is a hindered phenol having the general formula
Claim 10
Dependent Claim
12 words
The method of claim 10 wherein the polyisocyanate is polymethylene polyphenyl isocyanate.
Claim 11
Dependent Claim
27 words
The method of claim 8 wherein the stabilizer is added to the polyisocyanate prior to its reaction with the resorcinol/formaldehyde resin used in making the blocked polyisocyanate.
Claim 12
Dependent Claim
25 words
The method of claim 12 wherein the stabilizer is selected from at least one of the group consisting of the polycarbodiimide having the general formula
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |