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Patent Searching and Data


Title:
FLUORINE RUBBER COMPOSITION AND CROSSLINKED FLUORINE RUBBER PRODUCT
Document Type and Number:
WIPO Patent Application WO/2019/163928
Kind Code:
A1
Abstract:
Provided are: a fluorine rubber composition which is capable of improving the crack growth resistance at high temperatures; and a crosslinked fluorine rubber product which is obtained by crosslinking this fluorine rubber composition. A fluorine rubber composition which contains, per 100 parts by mass of a peroxide-crosslinkable fluorine rubber (A), 10-60 parts by mass of a carbon black (B) and 0.1-10 parts by mass of a peroxide-based crosslinking agent (C), and wherein the carbon black (B) has a number of foreign substances of 30 pieces/mm2 or less as measured under the measurement conditions described below. Measurement conditions: A dispersion liquid in which the carbon black (B) is dispersed in ethanol and contains the carbon black (B) at 0.1% by mass is collected in an amount of 1 ml; the collected dispersion liquid is subjected to filtration under reduced pressure; and the residue of the carbon black (B) trapped on the filter surface is observed with a scanning electron microscope so as to measure the number of foreign substances that have an aspect ratio of 1.1 or less and a Heywood diameter of 5 μm or more.

Inventors:
ARAI MASASHI (JP)
OHTA DAISUKE (JP)
UEDA AKINORI (JP)
ODA YASUHIRO (JP)
ORIDE JUNICHI (JP)
Application Number:
JP2019/006692
Publication Date:
August 29, 2019
Filing Date:
February 22, 2019
Export Citation:
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Assignee:
DAIKIN IND LTD (〒5308323, JP)
BRIDGESTONE CORP (〒1048340, JP)
International Classes:
C08L27/12; B29C33/40; C08K3/04; C08K5/14
Domestic Patent References:
WO2012026006A12012-03-01
WO2013125735A12013-08-29
Foreign References:
JP2011236396A2011-11-24
JP2006096976A2006-04-13
JP2019034508A2019-03-07
Attorney, Agent or Firm:
TASS MEISTER PATENT FIRM (〒1020093, JP)
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