High-efficiency belt and method of manufacturing the same
US-11092210-B2 · Aug 17, 2021 · US
Rubber composition and friction transmission belt
US12305029B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12305029-B2 |
| Application number | US-202017763905-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 25, 2020 |
| Priority date | Sep 25, 2019 |
| Publication date | May 20, 2025 |
| Grant date | May 20, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
A rubber composition includes an elastomer component, a polyvinyl pyrrolidone-based resin, and a non-water-absorbent short fiber, and includes substantially no water-absorbent fiber. The elastomer component may include an ethylene-α-olefin elastomer. The polyvinyl pyrrolidone-based resin may have a K value of 10 to 100. The non-water-absorbent short fiber may include an aliphatic polyamide short fiber.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rubber composition comprising an elastomer component, a polyvinyl pyrrolidone-based resin, and a non-water-absorbent short fiber, wherein the rubber composition comprises substantially no water-absorbent fiber, wherein the non-water-absorbent short fiber has an average fiber length of 0.3 mm to 30 mm, wherein a proportion of the polyvinyl pyrrolidone-based resin is 1 to 20 parts by mass with respect to 100 parts by mass of the elastomer component, and wherein a proportion of the polyvinyl pyrrolidone-based resin is 3 to 100 parts by mass with respect to 100 parts by mass of the non-water-absorbent short fiber. 2. The rubber composition according to claim 1 , wherein the elastomer component comprises an ethylene-α-olefin elastomer. 3. The rubber composition according to claim 1 , wherein the polyvinyl pyrrolidone-based resin has a K value of 10 to 100. 4. The rubber composition according to claim 1 , wherein the non-water-absorbent short fiber comprises an aliphatic polyamide short fiber. 5. The rubber composition according to claim 1 , wherein a proportion of the non-water-absorbent short fiber is 15 to 50 parts by mass with respect to 100 parts by mass of the elastomer component. 6. The rubber composition according to claim 1 , comprising no cellulose-based fiber. 7. A frictional power transmission belt comprising a frictional power transmission surface formed of a cured product of the rubber composition according to claim 1 .
Assignees
Inventors
Classifications
Homopolymers or copolymers of N-vinyl-pyrrolidones · CPC title
with textile reinforcement · CPC title
with textile reinforcement · CPC title
made of rubber (F16G1/28 takes precedence {; consisting of several parts F16G1/22}; making thereof B29D29/00 ) · CPC title
Fibres; Fibrils · CPC title
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- What does patent US12305029B2 cover?
- A rubber composition includes an elastomer component, a polyvinyl pyrrolidone-based resin, and a non-water-absorbent short fiber, and includes substantially no water-absorbent fiber. The elastomer component may include an ethylene-α-olefin elastomer. The polyvinyl pyrrolidone-based resin may have a K value of 10 to 100. The non-water-absorbent short fiber may include an aliphatic polyamide shor…
- Who is the assignee on this patent?
- Mitsuboshi Belting Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08L23/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 20 2025 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).