Rubber composition of strong adhesion to metal and hose structure using the same
AssigneeThe Yokohama Rubber Co., Ltd.
InventorOsamu Ozawa
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Abstract
Rubber compositions are disclosed which are tailored to exhibit high adhesion to brass, sufficient resistance to heat and to oil and great elasticity. A selected class of highly hydrogenated acrylonitrile copolymer rubbers are blended with specified amounts of a selected class of trially isocyanurate compounds, organic sulfur-containing compounds or sulfur donors and organic peroxides. Also disclosed is a hose built with an inner tube formed from the above rubber composition and a reinforcing layer from a pressure-resistant, metallic wire plated with brass.
Claims5
A rubber composition comprising:
- (I) 100 parts by weight of a base rubber comprising at least one copolymer which is (a) a hydrogenate of acrylonitrile-butadiene rubber, acrylonitrile-isoprene rubber or acrylonitrile-butadiene-isoprene rubber, (b) acrylonitrile-butadiene-methyl acrylate rubber, acrylonitrile-butadiene-acrylate rubber or a hydrogenate thereof, or (c) acrylonitrile-ethylene-butadiene rubber, acrylonitrile-butyl acrylate-ethoxyethyl acrylate-vinyl chloroacetate rubber or acrylonitrile-butyl acrylate-ethyoxyethyl acrylate-vinyl norborene rubber or a hydrogenate thereof;
- (II) 5 to 30 parts by weight of a triallyl isocyanurate compound of the formula:
- ##STR4## (III) 0.1 to 15 parts by weight of a 6-R-2,4-dimercapto-1,3,5-triazine compound of the formula:
- ##STR5## where R is a mercapto, alkoxy, mono- or di-alkylamino, mono- or di-cycloalkylamino, mono- or di-arylamino or N-alkyl-N'-arylamino group;
- and
- (IV) 1 to 15 parts by weight of an organic peroxide.
A hose structure comprising an inner tube of a single or multiple layer and a reinforcing layer laid thereover, the inner tube being formed from a rubber composition comprising:
- (I) 100 parts by weight of a base rubber comprising at least one copolymer which is (a) a hydrogenate of acrylonitrile-butadiene rubber, acrylonitrile-isoprene rubber or acrylonitrile-butadiene-isoprene rubber, (b) acrylonitrile-butadiene-methyl acrylate rubber or acrylonitrile-butadiene-acrylate rubber or a hydrogenate thereof, or (c) acrylonitrile-ethylene-butadiene rubber, acrylonitrile-butyl acrylate-ethoxyethyl acrylate-vinyl chloroacetate rubber, or acrylonitrile-butyl acrylate-ethoxyethyl acrylate-vinyl norborene rubber or a hydrogenate thereof;
- (II) 5 to 30 parts by weight of a triallyl isocyanurate compound of the formula:
- ##STR6## (III) 0.1 to 15 parts by weight of a 6-R-2,4-dimercapto-1,3,5-triazine compound of the formula:
- ##STR7## where R is a mercapto, alkoxy, mono- or di-alkylamino, mono- or di-cycloalkylamino, mono- or di-arylamino or N-alkyl-N'-arylamino group;
- and
- (IV) 1 to 15 parts by weight of an organic peroxide;
- and the reinforcing layer being formed from a metallic wire of high pressure resistance plated with a copper-zinc alloy.
Dependencies are inferred from the claim text.