Patent US4441946A successfully refreshed from Google Patents.
US4441946A
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Heat and humidity resistant steel cord reinforced rubber composite
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1982-11-22
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Granted: 1984-04-10
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Expires: 2002-11-22
Abstract
Abstract Humid aged adhesion of rubber containing a phenol formaldehyde resin bonded directly to bright steel cord is improved by coating the bright steel cord with an amino functional organo silane.
Inventors
- 👤 Satish C. Sharma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:08
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/10; C08J2321/00; D; D07; D07B; D07B2201/00; D07B2201/20; D07B2201/2001; D07B2201/201; D07B2201/2012; D07B2205/00; D07B2205/20; D07B2401/00; D07B2401/20; D07B2401/2095; D07B2501/00; D07B2501/20; D07B2501/2046; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10855; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A method of bonding bright steel cord to an unvulcanized vulcanizable rubber which comprises coating said cord, said cord being free of acid or base surface treatment prior to coating, with an amino functional organo silane wherein said vulcanizable rubber contains a resorcinol and hexamethyol melamine bonding agent, a hydrated silica and other conventional rubber compounding ingredients, combining said coated bright steel cord and said unvulcanized vulcanizable rubber to form a composite and vulcanizing said composite.
Claim 2
Independent Claim
76 words
A method of bonding bright steel cord to an unvulcanized vulcanizable rubber which comprises coating said cord, said cord being free of acid or base surface treatment prior to coating, with an amino functional organo silane wherein said vulcanizable rubber contains a resorcinol and hexamethyol melamine bonding agent, a hydrated silica and other conventional rubber compounding ingredients, combining said coated bright steel cord and said unvulcanized vulcanizable rubber to form a composite and vulcanizing said composite.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the amino functional organo silane is N-β-(N-vinylbenzylamino) ethyl-γ-aminopropyl-trimethoxysilane monohydrogen chloride.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein the bonding agent is a mixture of equal parts of resorcinol and hexamethyol melamine pentamethyl ether.
References Cited (Backward Citations)
US3088847A
Cited
US4052524A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |