Transmission belt and process for producing the same

Details Transmission belt and process for producing the same Transmission belt and process for producing the same

2007-08-31

2011-11-22

Nutter, Nathan M (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S232000, C525S240000, C524S515000

Reexamination Certificate

active

08063147

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.

REFERENCES:
patent: 2004/0127873 (2004-07-01), Varona et al.
patent: 2004/0176540 (2004-09-01), Nishihara
patent: 1186797 (2002-03-01), None
patent: 07-337480 (1995-12-01), None
patent: 09-176402 (1997-07-01), None
patent: WO2008/016429 (2008-02-01), None

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