Title:
FLUORINE RUBBER COMPOSITION AND BLADDER FOR TIRE PRODUCTION
Document Type and Number:
WIPO Patent Application WO/2012/026007
Kind Code:
A1
Abstract:
Provided is a fluorine rubber composition containing carbon black and a rubber component that contains fluorine rubber, wherein the carbon black has a nitrogen adsorption specific surface area (N2SA) of 25-180 m2/g (inclusive) and a dibutyl phthalate (DBP) absorption of 60-180 ml/100 g (inclusive). In a kneading step (A) wherein the carbon black is blended into the rubber component, the average shear rate on the rotor surface of the kneading machine is 100 (1/second) or higher and the maximum kneading temperature (Tm) is 120-200˚C (inclusive). Consequently, the fluorine rubber composition has achieved a good balance between high tensile strength and high elongation at break after vulcanization, while obtaining good mechanical characteristics even in high temperature environments. Also provided is a bladder for tire production, which is produced using the fluorine rubber composition.
Inventors:
YANO MASASHI (JP)
OTA DAISUKE (JP)
OKUTSU SHUICHI (JP)
OTA DAISUKE (JP)
OKUTSU SHUICHI (JP)
Application Number:
PCT/JP2010/064402
Publication Date:
March 01, 2012
Filing Date:
August 25, 2010
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
YANO MASASHI (JP)
OTA DAISUKE (JP)
OKUTSU SHUICHI (JP)
YANO MASASHI (JP)
OTA DAISUKE (JP)
OKUTSU SHUICHI (JP)
International Classes:
B29D22/00; C08L27/12; C08K3/04; C08K5/14; C08K5/17; C08K5/3492
Foreign References:
| JP2004026897A | 2004-01-29 | |||
| JP2002192528A | 2002-07-10 | |||
| JPH03122153A | 1991-05-24 | |||
| JPS62841536B2 | ||||
| JPH03122153A | 1991-05-24 | |||
| JPH0641378A | 1994-02-15 | |||
| JPH09188793A | 1997-07-22 | |||
| JP2002265733A | 2002-09-18 |
Other References:
See also references of EP 2610300A4
Attorney, Agent or Firm:
OHTANI, Tamotsu et al. (JP)
Tamotsu Otani (JP)
Tamotsu Otani (JP)
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Claims: