Rubber composition for dynamic parts
AssigneeThe Gates Corporation
InventorsYuding Feng, Kathy Lambrinos, Yahya Hodjat
Life of this patent
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Abstract
A rubber composition having (A) an elastomer component in which the primary elastomer constituent is an ethylene-propylene elastomer polymerized in the gas phase with a metallocene catalyst and having a molecular weight of at least about 250,000; (B) a silicon-modified olefinic elastomer in an amount of from about 5 to about 50 parts per hundred parts of the elastomer component; (C) ground mica in an amount of from about 2.5 to about 30 parts per hundred parts of the elastomer component; and (D) a peroxide curative. The composition may be used in a vibration isolator which may be used in a belt drive system.
Claims29
A rubber composition comprising:
- 100 parts of elastomer comprising as its primary elastomer constituent an ethylene-propylene elastomer polymerized in the gas phase with a metallocene catalyst and having a molecular weight of at least about 250,000;
- a silicon-modified olefinic elastomer in an amount of from about 5 to about 50 parts per hundred parts of the elastomer;
- ground mica in an amount of from about 2.5 to about 30 parts per hundred parts of the elastomer;
- and
- a peroxide curative, or the crosslinked reaction product of the foregoing.
A dynamic article comprising a structural member and a crosslinked rubber member comprising the reaction product of:
- 100 parts of elastomer comprising as its primary elastomer constituent an ethylene-propylene elastomer polymerized in the gas phase with a metallocene catalyst and having a molecular weight of at least about 250,000;
- a silicon-modified olefinic elastomer in an amount of from about 5 to about 50 parts per hundred parts of the elastomer;
- ground mica in an amount of from about 2.5 to about 30 parts per hundred parts of the elastomer;
- and
- a peroxide curative.
A system comprising a dynamic article and a power transmission system in driving engagement with said dynamic article, wherein the dynamic article comprises a structural member and a crosslinked rubber member comprising the reaction product of:
- 100 parts of elastomer comprising as its primary elastomer constituent an ethylene-propylene elastomer polymerized in the gas phase with a metallocene catalyst and having a molecular weight of at least about 250,000;
- a silicon-modified olefinic elastomer in an amount of from about 5 to about 50 parts per hundred parts of the elastomer;
- ground mica in an amount of from about 2.5 to about 30 parts per hundred parts of the elastomer;
- and
- a peroxide curative.
Dependencies are inferred from the claim text.