Antivibration rubber composition, and antivibration rubber
US-2015299434-A1 · Oct 22, 2015 · US
Rubber vibration isolator composition and rubber vibration isolator
US10059834B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10059834-B2 |
| Application number | US-201515303810-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 13, 2015 |
| Priority date | Jun 6, 2014 |
| Publication date | Aug 28, 2018 |
| Grant date | Aug 28, 2018 |
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- Title
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Abstract
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The present invention addresses the problem of providing a rubber vibration isolator composition with which low temperature characteristics can be significantly improved while maintaining basic strength characteristics (hardness, tensile elongation, tensile strength), and a rubber vibration isolator obtained by curing said rubber composition. The present invention provides a rubber vibration isolator composition characterized in containing natural rubber, a high cis content isoprene rubber, a crosslinking agent and an aromatic sulfonamide having a specified chemical structure. The high cis content isoprene rubber refers to the cis-1,4 bond content being at least 95%.
First claim
Opening claim text (preview).
The invention claimed is: 1. A rubber vibration isolator composition characterized by comprising a rubber component consisting of natural rubber and high-cis-content isoprene rubber having a cis-1,4 bond content of at least 95%, a crosslinking agent and an aromatic sulfonamide of the following structural formula wherein R 1 is a moiety of the formula —S X —C n H m Cl p , x being an integer of 0 or more, n being an integer of 1 or more, m being an integer of 0 or more and p being an integer of 1 or more, such as to satisfy the condition m+p=2n+1, and S being a sulfur atom, C being a carbon atom, H being a hydrogen atom, and Cl being a chlorine atom that may be substituted with another halogen element; and R 2 and R 3 are each a hydrogen atom, an amino group, or a hydrocarbon group of 1 to 8 carbon atoms that is linear, branched, cyclic or a combination thereof, without limitation as to the position and number of substituents thereon. 2. The rubber vibration isolator composition of claim 1 , wherein the weight ratio of the natural rubber to the high-cis-content isoprene rubber having a cis-1,4 bond content of at least 95% is from 95/5 to 45/55. 3. The rubber vibration isolator composition of claim 1 , wherein the content of aromatic sulfonamide is from 0.1 to 4 parts by weight per 100 parts by weight of the rubber component. 4. A rubber vibration isolator obtained by curing the rubber composition of claim 1 .
Assignees
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Classifications
having improved processability or containing aids for moulding methods · CPC title
Crosslinking · CPC title
Compositions of homopolymers or copolymers of conjugated diene hydrocarbons · CPC title
- C08L7/00Primary
Compositions of natural rubber · CPC title
containing two or more polymers of the same C08L -group · CPC title
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- What does patent US10059834B2 cover?
- The present invention addresses the problem of providing a rubber vibration isolator composition with which low temperature characteristics can be significantly improved while maintaining basic strength characteristics (hardness, tensile elongation, tensile strength), and a rubber vibration isolator obtained by curing said rubber composition. The present invention provides a rubber vibration is…
- Who is the assignee on this patent?
- Bridgestone Corp
- What technology area does this patent fall under?
- Primary CPC classification C08L7/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 28 2018 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).