(19)
(11) EP 1 764 391 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 158(3) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
08.08.2007 Bulletin 2007/32

(43) Date of publication:
21.03.2007 Bulletin 2007/12

(21) Application number: 06731157.1

(22) Date of filing: 05.04.2006
(51) International Patent Classification (IPC): 
C08L 27/12(2006.01)
C08K 3/26(2006.01)
C08K 5/50(2006.01)
 C08K 3/22(2006.01)
C08K 5/02(2006.01)
(86) International application number:
PCT/JP2006/307209
(87) International publication number:
WO 2006/120818 (16.11.2006 Gazette 2006/46)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 11.05.2005 JP 2005138024

(71) Applicant: NOK Corporation
Minato-ku Tokyo 105-8585 (JP)

(72) Inventors:
  • HIGASHIRA, Toshihiro c/o NOK Corporation
    Fujisawa-shi, Kanagawa 2510042 (JP)
  • SANO, Hiroyuki c/o NOK Corporation
    Fujisawa-shi, Kanagawa 2510042 (JP)

(74) Representative: Albrecht, Thomas 
Kraus & Weisert, Thomas-Wimmer-Ring 15
80539 München
80539 München (DE)

   


(54) POLYOL-CROSSLINKABLE FLUORORUBBER COMPOSITION


(57) A polyol-crosslinkable fluororubber composition comprises 100 parts by weight of polyol-crosslinkable fluororubber ; 0.5 to 10 parts by weight of a perfluoroalkane represented by the general formula F(CF2)2nF (n : 5~30), a 1H-perfluoroalkane represented by the general formula F(CF2)mH (m : 10 ~30), or a mixture thereof ; 0.5 to 2 parts by weight of basic magnesium aluminum hydroxycarbonate hydrate ; and 1 to 5 parts by weight of an acid acceptor compound excluding Ca compounds. The fluororubber composition can simultaneously attain improvement in preservation stability of compounds, prevention of compounds from adhesion at the time of kneading, short-time vulcanization, improvement of mold releasability at the time of vulcanization molding, prevention of contamination with metal ions and reduction in adhesiveness of crosslinking products due to increase of crosslinking density without substantially impairing the normal state physical properties or compression set characteristics and further advantage-ous properties inherent in the fluororubber, and contains no calcium compounds causing contamination of HDD.