Thermoplastic elastomer composition, process for the preparation there of, hose made by using the composition, and process for the production thereof

An elastomer composition comprising at least one acrylic rubber having an acryl group and an epoxy group and 5 to 30 parts by weight, based upon 100 parts by weight of the copolymer rubber of a polycaprolactone having a carboxyl group at the terminal thereof.

A elastomer composition comprising (i) 30 to 90% by weight of a thermoplastic resin component composed of at least one thermoplastic copolyester elastomer, (ii) 10 to 70% by weight of a rubber component composed of at least one acrylic rubber having at least one acryl group and epoxy group, and (iii) 5 to 30 parts by weight, based upon 100 parts by weight of the rubber component, of a polycaprolactone having a carboxyl group at the terminal thereof as a cross-linking agent, wherein the rubber component forms a dispersed phase and the thermoplastic resin component forms a continuous phase.

A thermoplastic elastomer composition comprising a thermoplastic elastomer composition composed of at least (i) a polyester thermoplastic resin and (ii) a vulcanized rubber composition of an acrylic rubber having an acryl group and an epoxy group dispersed therein, wherein (iii) an epoxy-modified olefin polymer having the formula (I):

• wherein, A represents an acrylate unit, B represents an epoxy group unit, and C represents an olefin unit, x, y, and z are the molar percentages in the epoxy-modified olefin polymer provided that x+y+z is 1, the acrylate unit A(x), epoxy group unit B(y), and olefin unit C(z) being essential components and said epoxy group unit B being contained in a molar percentage y of 0.005 to 0.200, and the component (i) being 90 to 30 parts by weight and the component (iii) being 1 to 25 parts by weight, when the sum of the weights of the components (i) and (ii) is 100 parts by weight.

A thermoplastic elastomer composition superior in abrasion resistance comprising a rubber composition of (A) at least one silicone selected from the group consisting of organosiloxanes and their modified forms, (B) a copolyester thermoplastic resin, (C) at least one acrylic rubber having an acrylyl group and an epoxy group, and (D) a vulcanizing agent for the rubber composition, wherein vulcanized rubber particles of said rubber composition are finely dispersed in the thermoplastic resin.

A laminate comprising a layer of a thermoplastic elastomer composition comprising a polyolefin thermoplastic resin and an at least partially cross-linked elastomer component and a fiber reinforcing layer between which layers is interposed at least one thermoplastic adhesive resin, which layers and resin are integrally bonded together by hot melting, wherein said thermoplastic adhesive resin is a blend of at least one resin selected from the group consisting of maleic anhydride-modified polyolefin resins and epoxy-modified polyolefin resins and a polyester resin, and wherein the weight ratio of the maleic anhydride-modified polyolefin resin and epoxy-modified polyolefin resin to the polyester resin is 95:5 to 5:95.

A hose comprising an inner tube layer, an outer cover layer, and at least one fiber reinforcing layer, wherein at least one of the inner tube layer and the outer cover layer is composed of a thermoplastic elastomer composition comprising a polyolefin thermoplastic resin and an at least partially cross-linked elastomer component, and at least one thermoplastic adhesive resin interposed between said at least one of the inner tube layer and the outer cover layer composed of said thermoplastic elastomer composition and the fiber reinforcing layer, which layers and resin are integrally bonded together by hot melting, wherein said thermoplastic adhesive resin is a blend of at least one resin selected from the group consisting of maleic anhydride-modified polyolefin resins and epoxy-modified polyolefin resins and a polyester resin, and wherein the weight ratio of the maleic anhydride-modified polyolefin resin and epoxy-modified polyolefin resin to the polyester resin is 95:5 to 5:95.

A hose comprising an inner tube layer, an outer cover layer, and a plurality of fiber reinforcing layers, wherein at least one of the inner tube layer and the outer cover layer is composed of a thermoplastic elastomer composition comprising a polyolefin thermoplastic resin and an at least partially cross-linked elastomer component, and wherein at least one thermoplastic adhesive resin, composed of a blend of at least one resin selected from the group consisting of maleic anhydride-modified polyolefin resins and epoxy-modified polyolefin resins and a polyester resin, wherein the weight ratio of the maleic anhydride-modified polyolefin resin and epoxy-modified polyolefin resin to the polyester resin is 95:5 to 5:95, is interposed between said at least one of the inner tube layer and the outer cover layer composed of said thermoplastic elastomer composition and one of said fiber reinforcing layers, which layers and resin are integrally bonded together by hot melting, and wherein the fiber reinforcing layers, between which is interposed at least one thermoplastic adhesive resin selected from the group consisting of maleic anhydride-modified polyolefin resins, epoxy-modified polyolefin resins and polyester resins, are integrally bonded together by hot melting.

A hose comprising at least an inner tube, reinforcing layer, and outer cover, wherein said inner tube has a structure of a thermoplastic elastomer composition comprising a matrix of 30 to 90% by weight of a thermoplastic copolyester elastomer and, dispersed therein, 70 to 10% by weight of vulcanized rubber particles of an acrylic rubber having an acryl group and epoxy group,

• said reinforcing layer is comprised of a polyester fiber, and
• said outer cover has a structure of a thermoplastic elastomer comprising a matrix of 30 to 90% by weight of a thermoplastic copolyester elastomer and, dispersed therein, 70 to 10% by weight of vulcanized rubber particles of an acrylic rubber having an acryl group and epoxy group, and
• a bonding layer disposed at least between the reinforcing layer and the outer cover, wherein said bonding layer is a thermoplastic resin composition containing at least 50% by weight of a thermoplastic polyester copolymer resin composed of, as the dicarboxylic acid constituting the polyester, an aromatic dicarboxylic acid and the Young's modulus at 120° C. is at least 3.0 MPa.