Rubber composition for hoses, and hose
US-2015368448-A1 · Dec 24, 2015 · US
Air hose for automobile
US9809700B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9809700-B2 |
| Application number | US-201515113081-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 10, 2015 |
| Priority date | Sep 29, 2014 |
| Publication date | Nov 7, 2017 |
| Grant date | Nov 7, 2017 |
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Abstract
Official abstract text for this publication.
An air hose for an automobile, which has a two-layered structure of an inner tube made of an NBR composition and an outer cover made of a CSM composition, wherein the NBR composition satisfies (A) and (B) below: (A) an unvulcanized NBR in which an amount of AN is 30 to 50 and a Mooney viscosity (ML (1+4) 100° C.) is 50 to 90, is vulcanized in the presence of 0.5 to 7.0 parts by mass of a thiuram compound serving as a vulcanization accelerator, 0 to 2.5 parts by mass of 4,4′-dithio dimorpholine, and 2.0 to 7.0 parts by mass of a thiazole compound to 100 parts by mass of the unvulcanized NBR; and (B) 5 to 50 parts by mass of a plasticizer having a molecular weight of 700 to 2,000 is blended to 100 parts by mass of the unvulcanized NBR.
First claim
Opening claim text (preview).
The invention claimed is: 1. An air hose for an automobile, which has a two-layered structure of an inner tube made of an NBR composition and an outer cover made of a CSM composition, the air hose characterized in that the NBR composition satisfies (A) and (B) below: (A) an unvulcanized NBR in which an amount of AN is 30 to 50 and a Mooney viscosity (ML (1+4) 100° C.) is 50 to 90, is vulcanized in the presence of 0.5 to 7.0 parts by mass of a thiuram compound serving as a vulcanization accelerator, 0 to 2.5 parts by mass of 4,4′-dithio dimorpholine, and 2.0 to 7.0 parts by mass of a thiazole compound to 100 parts by mass of the unvulcanized NBR; and (B) 5 to 50 parts by mass of a plasticizer having a molecular weight of 700 to 2,000 is blended to 100 parts by mass of the unvulcanized NBR. 2. The air hose for an automobile according to claim 1 , wherein the NBR composition further satisfies (C) below: (C) as physical properties after a heat aging test conducted in air at 120° C. for 20 days, hardness HS is 90 or less, and elongation at break EB is 140% or more.
Assignees
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Classifications
condensed with carbocyclic rings · CPC title
of metals · CPC title
Waxes · CPC title
made of rubber or flexible plastics · CPC title
- C08L9/02Primary
Copolymers with acrylonitrile · CPC title
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- What does patent US9809700B2 cover?
- An air hose for an automobile, which has a two-layered structure of an inner tube made of an NBR composition and an outer cover made of a CSM composition, wherein the NBR composition satisfies (A) and (B) below: (A) an unvulcanized NBR in which an amount of AN is 30 to 50 and a Mooney viscosity (ML (1+4) 100° C.) is 50 to 90, is vulcanized in the presence of 0.5 to 7.0 parts by mass of a thiura…
- Who is the assignee on this patent?
- Toyoda Gosei Kk
- What technology area does this patent fall under?
- Primary CPC classification C08L9/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 07 2017 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).