Gas barrier rubber laminate for minimizing refrigerant leakage
AssigneeBridgestone Corporation
InventorsShinji Saitoh, Masato Yoshikawa
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Abstract
A gas barrier rubber laminate comprising a nylon film layer, an intermediate layer of a cured trialkoxysilane, and a rubber layer is fully flexible and pliable and has improved gas barrier properties to fluorocarbon gases. Such a gas barrier rubber laminate is prepared by modifying a surface of a nylon film with low-temperature plasma treatment or corona discharge treatment, applying an organosilane solution to the modified surface, curing the organosilane, laying a rubber layer on the cured organosilane, and curing the rubber layer thereto.
Claims4
A gas barrier rubber laminate for minimizing leakage of fluorocarbon gas refrigerant comprising;
- a film layer of a polyamide or a blend of polyamide with a polyolefin, a layer of rubber selected from the group consisting of natural rubber, butadiene rubber, styrene-butadiene copolymer rubber, chloroprene rubber, acrylonitrile-butadiene rubber and isobutylene-isoprene rubber, and an intermediate gas barrier layer therebetween composed of a cured product of an organosilane of the formula (1):
- ##STR3## wherein each of R.sup.1 and R.sup.2 is a saturated or unsaturated hydrocarbon radical or alkoxy radical, and
- each of R.sup.3 and R.sup.4 is a saturated or unsaturated hydrocarbon radical.
A fluorocarbon gas barrier rubber laminate for minimizing leakage of fluorocarbon gas refrigerant comprising;
- a film layer of a polyamide or blend of polyamide with a polyolefin, a layer of rubber selected from the group consisting of natural rubber, butadiene rubber, styrene-butadiene copolymer rubber, chloroprene rubber, acrylonitrile-butadiene rubber and isobutylene-isoprene rubber, and an intermediate gas barrier layer therebetween, the surface of the film layer to which the intermediate gas barrier layer is formed is surface modified by low-temperature plasma treatment or corona discharge treatment, and the intermediate gas barrier layer is composed of a cured product of an organosilane of the formula (1):
- ##STR4## wherein each of R.sup.1 and R.sup.2 is a saturated or unsaturated hydrocarbon radical or alkoxy radical, and
- each of R.sup.3 and R.sup.4 is a saturated or unsaturated hydrocarbon radical.
Dependencies are inferred from the claim text.