Transmission belt and process for producing the same
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United States of America Patent
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Nov 22, 2011
Grant Date -
Mar 18, 2010
app pub date -
Aug 31, 2007
filing date -
Nov 10, 2006
priority date (Note) -
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Abstract
An object is to provide a transmission belt which is restrained from being deteriorated in a high-temperature atmosphere, is excellent in softness in a low-temperature atmosphere, and is hardly worn away. To attain the object, the invention provides a transmission belt made of a rubber composition wherein the ratio by weight of a Ziegler-Natta catalyst type ethylene/α-olefin copolymer rubber, which is an ethylene/α-olefin copolymer rubber obtained by polymerization in the presence of a Ziegler-Natta catalyst, to a metallocene type ethylene/α-olefin copolymer rubber, which is an ethylene/α-olefin copolymer rubber obtained by polymerization in the presence of a metallocene catalyst, is from 50/50 to 90/10.
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