Patent US4269754A successfully refreshed from Google Patents.
US4269754A
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Phenolic resin particles and processes for their production and friction elements containing same
Assignee: Occidental Chemical Corp
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Filing: 1979-07-19
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Granted: 1981-05-26
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Expires: 1999-07-19
Abstract
Abstract Phenolic resin particles which are useful as friction particles for use in friction elements such as brake linings, clutch facings or other braking devices are produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C. Preferred friction particles are prepared from phenolic resins containing benzylic ether linkages in the presence of hot oil or by other heating methods. Friction elements containing such particles are also described.
Inventors
- 👤 Edward J. Lang
- 👤 Michael G. Dubenitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:28
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/10; F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; C08J2361/00; C08J2361/04; C08J2361/06
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
41 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C.
Claim 2
Dependent Claim
41 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C.
Claim 3
Dependent Claim
49 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin contains benzylic ether linkages.
Claim 4
Dependent Claim
49 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin contains benzylic ether linkages.
Claim 5
Dependent Claim
38 words
The process of claim 2 wherein the phenolic resin contains the structure: ##STR3## wherein m is an integer, and R is hydrogen, a hydrocarbon radical, oxyhydrocarbon radical or halogen, meta to the hydroxyl group of the phenyl group.
Claim 6
Dependent Claim
75 words
The process of claim 2 wherein the phenolic resin contains the structure: ##STR4## wherein R is hydrogen, a hydrocarbon radical, oxyhydrocarbon radical or halogen, meta to the hydroxyl group of the phenol group; m and n are numbers the sum of which is at least two and the ratio of m-to-n is at least one; and A is hydrogen, a methylol group, or --CH 2 (OCH 2 ) x OH, where x is an integer.
Claim 7
Dependent Claim
51 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is a glycol modified resole resin.
Claim 8
Dependent Claim
51 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is a glycol modified resole resin.
Claim 9
Dependent Claim
54 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is the condensation product of phenol and an aldehyde.
Claim 10
Dependent Claim
54 words
A process for producing a friction particle comprising dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is the condensation product of phenol and an aldehyde.
Claim 11
Dependent Claim
38 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C.
Claim 12
Dependent Claim
38 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C.
Claim 13
Dependent Claim
46 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin contains benzylic ether linkages.
Claim 14
Dependent Claim
46 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin contains benzylic ether linkages.
Claim 15
Dependent Claim
39 words
The friction particle of claim 8 wherein the phenolic resin contains the structure: ##STR5## where m is an integer, and R is hydrogen, a hydrocarbon radical, oxyhydrocarbon radical or halogen, meta to the hydroxyl group of the phenyl group.
Claim 16
Dependent Claim
76 words
The friction particle of claim 8 wherein the phenolic resin contains the structure: ##STR6## wherein R is hydrogen, a hydrocarbon radical, oxyhydrocarbon radical or halogen, meta to the hydroxyl group of the phenyl group; m and n are numbers the sum of which is at least two and the ratio of m-to-n is at least one; and A is hydrogen, a methylol group, or --CH 2 (OCH 2 ) x OH, where x is an integer.
Claim 17
Dependent Claim
47 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is a glycol-modified resole resin.
Claim 18
Dependent Claim
47 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is a glycol-modified resole resin.
Claim 19
Dependent Claim
41 words
A friction particle comprising the product of the reaction at about 100° to about 175° C. of a phenolic resin containing benzylic ether linkages until the product is substantially insoluble in acetone, infusible, and has substantially no cohesive or bonding strength.
Claim 20
Dependent Claim
41 words
A friction particle comprising the product of the reaction at about 100° to about 175° C. of a phenolic resin containing benzylic ether linkages until the product is substantially insoluble in acetone, infusible, and has substantially no cohesive or bonding strength.
Claim 21
Dependent Claim
39 words
The friction particle of claim 12 wherein the phenolic resin contains the structure: ##STR7## where m is an integer, and R is hydrogen, a hydrocarbon radical, oxyhydrocarbon radical or halogen, meta to the hydroxyl group of the phenyl group.
Claim 22
Dependent Claim
76 words
A friction particle of claim 12 wherein the phenolic resin contains the structure: ##STR8## wherein R is hydrogen, a hydrocarbon radical, oxyhydrocarbon radical or halogen, meta to the hydroxyl group of the phenol group; m and n are numbers the sum of which is at least two and the ratio of m-to-n is at least one; and A is hydrogen, a methylol group or --CH 2 (OCH 2 ) x OH, where x is an integer.
Claim 23
Dependent Claim
39 words
A friction particle comprising the product of the reaction at about 100° to about 175° C. of a glycol-modified resole phenolic resin until the product is substantially insoluble in acetone, infusible, and has substantially no cohesive or bonding strength.
Claim 24
Dependent Claim
39 words
A friction particle comprising the product of the reaction at about 100° to about 175° C. of a glycol-modified resole phenolic resin until the product is substantially insoluble in acetone, infusible, and has substantially no cohesive or bonding strength.
Claim 25
Dependent Claim
51 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is the condensation product of phenol and an aldehyde.
Claim 26
Dependent Claim
51 words
A friction particle produced by dispersing a liquid, heat curable phenolic resin in a paraffinic oil having a viscosity of at least about 1,000 SUS at 100° F. at a temperature of about 100° to about 175° C., wherein said phenolic resin is the condensation product of phenol and an aldehyde.
Claim 27
Dependent Claim
17 words
A friction element comprising the friction particle of claims 7, 12, or 15, and a binder composition.
Claim 28
Dependent Claim
20 words
A friction element comprising the friction particle of claims 9, 13 or 15, a resin binder and a filler material.
Claim 29
Dependent Claim
39 words
A brake lining comprising about 5 to 15 weight percent of the friction particle of claims 10, 14 or 15, about 15 to 30 weight percent of resin binder and about 55 to 80 weight percent of filler materials.
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) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |