US4299640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber-brass adhesion improved through treatment of the metal with amino carboxylic acid or salt thereof
Assignee: Omnova Services Inc
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Filing: 1980-07-25
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Granted: 1981-11-10
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Expires: 2000-07-25
Abstract
Abstract The adhesion of brass plated steel cord to rubber is improved in many cases by treatment of the cord with a dilute aqueous solution of certain amino carboxylic acids and their corresponding ammonium, lithium, sodium and/or potassium salts and salt hydrates. After dipping in the treating solution, the cords may be rinsed with water, dried, combined with a vulcanizable rubber compound and vulcanized.
Inventors
- 👤 David E. Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:39
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/68; C23C22/06; C23C22/48; C23C22/52; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249933; Y10T428/249937; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/296; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31707; Y10T442/00; Y10T442/30; Y10T442/3382; Y10T442/339; Y10T442/3854; Y10T442/3911; Y10T442/60; Y10T442/654; Y10T442/655
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
97 words
The method which comprises dipping brass plated steel cord in an aqueous solution consisting essentially of from about 0.5 to 6% by weight of an amino carboxylic acid having from 2 to 24 carbon atoms, from 1 to 4 nitrogen atoms and from 1 to 6 carboxylic acid groups and their corresponding ammonium, lithium, sodium and potassium salts and salt hydrates and mixtures of the same for a time and at a temperature sufficient to remove at least an appreciable amount of the corrosion products on the outer surface layers of said cord and drying the same.
Claim 2
Independent Claim
97 words
The method which comprises dipping brass plated steel cord in an aqueous solution consisting essentially of from about 0.5 to 6% by weight of an amino carboxylic acid having from 2 to 24 carbon atoms, from 1 to 4 nitrogen atoms and from 1 to 6 carboxylic acid groups and their corresponding ammonium, lithium, sodium and potassium salts and salt hydrates and mixtures of the same for a time and at a temperature sufficient to remove at least an appreciable amount of the corrosion products on the outer surface layers of said cord and drying the same.
Claim 3
Dependent Claim
33 words
The method according to claim 1 containing the additional step of washing said solution treated cord in water to remove residual amounts of said solution from said cord prior to drying the same.
Claim 4
Dependent Claim
19 words
The method according to claim 2 where said aqueous solution has a pH of from about 7 to 11.5.
Claim 5
Dependent Claim
13 words
The method according to claim 3 where said amino carboxylic acid is glycine.
Claim 6
Dependent Claim
17 words
The method according to claim 1 where said amino carboxylic acid is an aliphatic amino carboxylic acid.
Claim 7
Dependent Claim
24 words
The method according to claim 1 containing the additional step of combining said dried cord with a vulcanizable rubber compound and vulcanizing the same.
Claim 8
Dependent Claim
24 words
The method according to claim 2 containing the additional step of combining said dried cord with a vulcanizable rubber compound and vulcanizing the same.
Claim 9
Dependent Claim
24 words
The method according to claim 3 containing the additional step of combining said dried cord with a vulcanizable rubber compound and vulcanizing the same.
Claim 10
Dependent Claim
24 words
The method according to claim 4 containing the additional step of combining said dried cord with a vulcanizable rubber compound and vulcanizing the same.
Claim 11
Dependent Claim
24 words
The method according to claim 5 containing the additional step of combining said dried cord with a vulcanizable rubber compound and vulcanizing the same.
Claim 12
Dependent Claim
9 words
The product produced by the method of claim 1.
Claim 13
Dependent Claim
9 words
The product produced by the method of claim 2.
Claim 14
Dependent Claim
9 words
The product produced by the method of claim 3.
Claim 15
Dependent Claim
9 words
The product produced by the method of claim 4.
Claim 16
Dependent Claim
9 words
The product produced by the method of claim 5.
Claim 17
Dependent Claim
9 words
The product produced by the method of claim 6.
Claim 18
Dependent Claim
9 words
The product produced by the method of claim 7.
Claim 19
Dependent Claim
9 words
The product produced by the method of claim 8.
Claim 20
Dependent Claim
9 words
The product produced by the method of claim 9.
Claim 21
Dependent Claim
9 words
The product produced by the method of claim 10.
References Cited (Backward Citations)
US2318559A
Cited
FR1532057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |