Fluorine rubber composition and bladder for tire production
US9068064B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 25, 2010 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Aug 25, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0025
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A fluorine rubber composition that provides high tensile strength and high elongation after vulcanization mutually compatible and from which favorable mechanical characteristics are obtained even in a high-temperature environment; and a bladder for tire production, which is manufactured using the same are provided. The fluorine rubber composition includes a rubber component containing a fluorine rubber and carbon black, wherein the carbon black has a specific surface area by nitrogen adsorption (N2SA) of 25 m2/g or more and not more than 180 m2/g and a dibutyl phthalate (DBP) absorption amount of 60 mL/100 g or more and not more than 180 mL/100 g; and in a kneading step (A) of compounding the carbon black in the rubber component, an average shear rate of a rotor surface of a kneading machine is 100 (1/sec) or more, and a kneading maximum temperature Tm is 120° C. or higher and not higher than 200° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.