Compositions comprising estolide compounds and methods of making and using the same
US-2016281016-A1 · Sep 29, 2016 · US
Paper-based wet friction material of automotive auto transmission
US9499759B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9499759-B2 |
| Application number | US-201514673848-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2015 |
| Priority date | Dec 9, 2014 |
| Publication date | Nov 22, 2016 |
| Grant date | Nov 22, 2016 |
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- Title
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Abstract
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A multilayer paper-based wet friction material of an automotive auto transmission may improve noise and vibration characteristics, heat resistance, wear resistance, compression resistance, and oil absorbency. The paper-based wet friction material of an automotive auto transmission includes: a first layer using cellulose pulp as a matrix and including a first functional additive; a second layer stacked on the first layer, using the cellulose pulp as the matrix, and including the second functional additive; and a hydrogen bonding layer mediating between the first layer and the second layer. The cellulose pulp of the first and second layers is cotton linter.
First claim
Opening claim text (preview).
What is claimed is: 1. A paper-based wet friction material of an automatic auto transmission, comprising: a first layer using cellulose pulp as a matrix and including a first functional additive; a second layer stacked on the first layer, using the cellulose pulp as the matrix, and including a second functional additive; and a hydrogen bonding layer mediating between the first layer and the second layer, wherein the cellulose pulp of the first and second layers is cotton linter. 2. The paper-based wet friction material of claim 1 , wherein the first functional additive includes aramid fiber and a content of the aramid fiber is equal to or less than 10 wt % (except for 0). 3. The paper-based wet friction material of claim 1 , wherein the second layer has the cellulose pulp of which a content is equal to or less than 10 wt % (except for 0). 4. The paper-based wet friction material of claim 1 , wherein the second functional additive includes diatomite and a content of the diatomite is equal to or more than 30 wt %. 5. The paper-based wet friction material of claim 1 , wherein the second functional additive includes aramid fiber and carbon fiber.
Assignees
Inventors
Classifications
Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes · CPC title
used as base material · CPC title
for automatic transmissions · CPC title
used as base material · CPC title
Multi-layer lubricant coatings · CPC title
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- What does patent US9499759B2 cover?
- A multilayer paper-based wet friction material of an automotive auto transmission may improve noise and vibration characteristics, heat resistance, wear resistance, compression resistance, and oil absorbency. The paper-based wet friction material of an automotive auto transmission includes: a first layer using cellulose pulp as a matrix and including a first functional additive; a second layer …
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Jinmyung Frictech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C10M111/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 22 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).