US4456650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction material having a coating comprising alkanolamine-carboxylic acid salts
Assignee: Ford Motor Co
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Filing: 1982-11-22
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Granted: 1984-06-26
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Expires: 2002-11-22
Abstract
Abstract A method for using alkanolamine-carboxylic acid salts as a coating for friction materials which during use contact, at least part of the time, rustable metals. The method comprises contacting the friction material with an aqueous solution comprising at least about 0.05 weight alkanolamine-carboxylic acid salts being the reaction product of: (i) alkanolamine; and (ii) C 4 -C 20 carboxylic acid; and thereafter evaporating water from the aqueous coating on the friction material so as to leave the friction material with a coating comprising alkanolamine-carboxylic acid salts. Friction materials coated by above method are also claimed.
Inventors
- 👤 Donald J. Melotik
- 👤 Marvin H. Weintraub
- 👤 Arnold E. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:56
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/56; C10M105/58; C10M105/60; C10M105/62; C10M105/08; C10M105/22; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C10M2201/00; C10M2201/02; C10M2207/00; C10M2207/10; C10M2207/103; C10M2207/26; C10M2207/2606; C10M2207/262; C10M2207/2623; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/0425; C10N; C10N2040/00; C10N2040/20; C10N2050/00; C10N2050/015; C10N2050/02; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31656; Y10T428/31678; Y10T428/31707; Y10T428/8305; Y10T442/00; Y10T442/20; Y10T442/2344
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
38 words
A friction material, which during use contacts rustable metal, having a coating comprising alkanolamine-carboxylic acid salts which are the reaction product of: (i) one or more alkanolamines; and (ii) one or more C 4 -C 20 carboxylic acids.
Claim 2
Dependent Claim
38 words
A friction material, which during use contacts rustable metal, having a coating comprising alkanolamine-carboxylic acid salts which are the reaction product of: (i) one or more alkanolamines; and (ii) one or more C 4 -C 20 carboxylic acids.
Claim 3
Dependent Claim
43 words
A friction material according to claim 1, wherein (i) said alkanolamine reactant is selected from the group consisting of primary, secondary and tertiary alkanolamines and (ii) the alkanol moiety of said alkanolamine reactant is selected from C 1 -C 6 aliphatic alkanol moieties.
Claim 4
Dependent Claim
28 words
A friction material according to claim 2, wherein said salts are selected from the group consisting of secondary alkanolamine-carboxylic acid salts, tertiary alkanolamine-carboxylic acid salts, and mixtures thereof.
Claim 5
Dependent Claim
15 words
A friction material according to claim 2, wherein said alkanolamine reactant consists of secondary alkanolamine.
Claim 6
Dependent Claim
14 words
A friction material according to claim 4, wherein said secondary alkanolamine reactant is diethanolamine.
Claim 7
Dependent Claim
34 words
A friction material according to claim 1, wherein said carboxylic acid reactant is selected from the group consisting of C 6 -C 10 aromatic carboxylic acids and C 6 -C 10 aliphatic carboxylic acids.
Claim 8
Dependent Claim
25 words
A friction material according to claim 6, wherein said salts comprise a mixture of alkanolamine aliphatic carboxylic acid salts and alkanolamine aromatic carboxylic acid salts.
Claim 9
Dependent Claim
19 words
A friction material according to claim 7, wherein greater than about 50% of said mixture comprises alkanolamine-aromatic carboxylic salts.
Claim 10
Dependent Claim
20 words
A friction material according to claim 6, wherein said friction materials are selected from clutch facings and brake friction materials.
References Cited (Backward Citations)
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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) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |