UST896009I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST896009I4 UST896009I4 US896009DH UST896009I4 US T896009 I4 UST896009 I4 US T896009I4 US 896009D H US896009D H US 896009DH US T896009 I4 UST896009 I4 US T896009I4
- Authority
- US
- United States
- Prior art keywords
- weight
- molded article
- defensive publication
- filler
- polyimide resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001721 polyimide Polymers 0.000 abstract description 3
- 239000009719 polyimide resin Substances 0.000 abstract description 3
- 239000010425 asbestos Substances 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 239000012765 fibrous filler Substances 0.000 abstract description 2
- 239000000945 filler Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052895 riebeckite Inorganic materials 0.000 abstract description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
Definitions
- a molded article especially adapted for use as highfriction articles such as brake linings is provided wherein the molded article is characterized by a co-efiicient of friction of from 0.4 to 0.8 and a Wear constant of at least 50, and consists of between about 20% and about 60% by weight of a linear aromatic polyimide resin, from between about 15% and about 50% by weight of a fibrous filler such as asbestos fibers, from between about 5% and about 20% of a metal such as copper in elongated form, from between about 2% and about 10% of an abrasive filler such as aluminum oxide in a siliconcontaining dispersion wherein said abarsive is characterized by a hardness of at least about 8 on the Mob scale, and up to about 25% by weight of a siliceous glass.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A MOLDED ARTICLE ESPECIALLY ADAPTED FOR USE AS HIGHFRICTION ARTICLES SUCH AS BRAKE LININGS, IS PROVIDED WHEREIN THE MOLDED ARTICLE IS CHARACTERIZED BY A CO-EFFICIENT OF FRICTION OF FROM 0.4 TO 0.8 AND A WEAR CONSTANT OF AT LEAST 50, AND CONSISTS OF BETWEEN ABOUT 20% AND ABOUT 60% BY WEIGHT OF A LINEAR AROMATIC POLYIMIDE RESIN, FROM BETWEEN ABOUT 15% AND ABOUT 50% BY WEIGHT OF A FIBROUS FILLER SUCH AS ASBESTOS FIBERS, FROM BETWEEN ABOUT 5% AND ABOUT 20% OF A METAL SUCH AS COPPER IN ELONGATED FORM, FROM BETWEEN ABOUT 2% AND ABOUT 10% OF AN ABRASIVE FILLER SUCH AS ALUMINUM OXIDE IN A SILICONCONTAINING DISPERSION WHEREIN SAID ABARSIVE IS CHARACTERIZED BY A HARDNESS OF AT LEAST ABOUT 8 ON THE MOH SCALE, AND UP TO ABOUT 25% BY WEIGHT OF A SILICEOUS GLASS.
Description
DEFENSIVE PUBLICATIQN UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofiice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED MARCH 7, 1972 T896,009 HIGH FRICTION ARTICLE BASED ON A POLYIMIDE RESIN Frank Clyde Starr, In, Wilmington, DeL, assignor to g, du Pont de Nemours and Company, Wilmington,
Continuation of application Ser. No. 711,487, Mar. 8, 1968, which is a continuation-in-part of abandoned application Ser. No. 415,458, Dec. 2, 1964. This application Oct. 19, 1970, Ser. No. 82,118
int. Cl. (108g 51/10, 51/12 US. Cl. 260-37 N No Drawing. 18 Pages Specification A molded article especially adapted for use as highfriction articles such as brake linings, is provided wherein the molded article is characterized by a co-efiicient of friction of from 0.4 to 0.8 and a Wear constant of at least 50, and consists of between about 20% and about 60% by weight of a linear aromatic polyimide resin, from between about 15% and about 50% by weight of a fibrous filler such as asbestos fibers, from between about 5% and about 20% of a metal such as copper in elongated form, from between about 2% and about 10% of an abrasive filler such as aluminum oxide in a siliconcontaining dispersion wherein said abarsive is characterized by a hardness of at least about 8 on the Mob scale, and up to about 25% by weight of a siliceous glass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8211870A | 1970-10-19 | 1970-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST896009I4 true UST896009I4 (en) | 1972-03-07 |
Family
ID=22169181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US896009D Pending UST896009I4 (en) | 1970-10-19 | 1970-10-19 | Defensive publication |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST896009I4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353848A (en) | 1980-07-25 | 1982-10-12 | Carsten Earl D | Fuel/air metering apparatus |
-
1970
- 1970-10-19 US US896009D patent/UST896009I4/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353848A (en) | 1980-07-25 | 1982-10-12 | Carsten Earl D | Fuel/air metering apparatus |
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