Abstract:
A pneumatic tire having an air permeation preventive layer comprising (A) a thin film of at least one aliphatic polyamide resin wherein at least part of the amide groups thereof are modified with alkoxyalkyl groups, (B) a thin film obtained from the curing a liquid composition containing (i) a multi component copolymer polyamide resin, (ii) a curable resin, and (iii) a curing agent for curing the curable resin, (C) a thin film obtained by coating and cross-linking a polymer composition containing (i) at least one aliphatic polyamide resin wherein at least part of the amide groups thereof are modified with alkoxyalkyl groups and/or groups having curable unsaturated bonds and (ii) at least one cross-linking agent and/or curable resin other than an acid, or (D) a thin film of a vinylidene chloride-acrylonitrile copolymer obtained by copolymerizing 5 to 50 molar % of acrylonitrile.
Abstract:
A thermoplastic elastomer composition produced from a thermoplastic resin and rubber and having a dispersion phase formed of a rubber composition at least part of which is dynamically crosslinked in the continuous phase of the thermoplastic resin, insulating glass using the thermoplastic elastomer composition as a sealing material and spacer, a process for producing the insulating glass using a sealing material made from the thermoplastic elastomer composition, comprising the steps of inserting the leading end of a charging nozzle into a space between the peripheral portions of a plurality of glass sheets, discharging the sealing material from the leading end of the nozzle body at a predetermined rate, and moving the glass sheets or the nozzle body relative to each other to charge the sealing material made from the thermoplastic elastomer composition into the space between the peripheral portions of the glass sheets, and a nozzle used in this process.
Abstract:
The invention relates to a pressure sensitive sealant composition for sealing a clearance between a lamp unit housing and a vehicle body panel of an automotive vehicle. The pressure sensitive sealant composition includes (a) 10-40 wt % of a component A that is at least one copolymer selected from the group consisting of hydrogenated styrene-butadiene copolymers, hydrogenated styrene-isoprene copolymers, and modified copolymers thereof; (b) a component B that is at least one tackifier selected from the group consisting of petroleum resins, terpene resins, rosin resins, coumarone-indene resins, hydrogenated resins thereof, and modified resins thereof, and (c) a component C that is a hydrocarbonic plasticizer. The pressure sensitive sealant composition is prepared by maxing together 100 parts by weight of the component A, 20-60 parts by weight of said component B, and 150-400 parts by weight of said component C. In order to apply the pressure sensitive sealant composition for the purpose of saealing, the pressure sensitive sealant composition is heated end directly applied in the state of a bead onto a member to be sealed, or otherwise applied to the member after it has been formed into the bead state.
Abstract:
A polymer composition for a tire having an air permeation coefficient of 25×10−12 cc·cm/cm2·sec ·cmHg (at 30° C.) or less and a Young's modulus of 1 to 500 MPa, including (A) at least 10% by weight, based on the weight of the total polymer component, of at least one thermoplastic resin having an air permeation coefficient of not more than 25×10−12 cc·cm/cm2·sec·cmHg (at 30° C.) and a Young's modulus of more than 500 MPa and (B) at least 10% by weight, based on the total weight of the polymer component, of at least one elastomer component having an air permeation coefficient of more than 25×10−12 cc·cm/cm2·sec·cmHg (at 30° C.) and a Young's modulus of not more than 500 MPa, wherein the total amount (A)+(B) of the component (A) and the component (B) is not less than 30% by weight based on the weight of the total polymer component, and a pneumatic tire obtained therefrom.
Abstract:
A pneumatic tire having an air permeation preventive layer comprising a low permeability thermoplastic elastomer composition comprising a thermoplastic elastomer having a thermoplastic resin composition as a continuous phase and a rubber composition as a dispersed phase, in which a barrier resin composition is contained, which low permeability thermoplastic elastomer composition has a phase structure in which the barrier resin composition is dispersed in the form of a flat state in the thermoplastic elastomer, is abundant in flexibility, is superior in gas permeation preventive property, and enables the tire to be reduced in weight.