摘要:
An elastomeric composition, and method of making the same, useful for forming thin films and sheets, comprising 55-60% hydrogenated SEEPS having a number average molecular weight of 90,000 to 100,000, 7-12% polystyrene, 15-30% oil, and 5 to 20% of an aliphatic hydrogenated hydrocarbon resin.
摘要:
A molding composition is disclosed which contains specific amounts of poly(arylene ether), styrenic polymer, hydrogenated block copolymer, flame retardant, and polytetrafluoroethylene. The molding composition performs well on a battery of tests, including heat resistance, impact strength, melt flow, and flame retardancy, and it is particularly useful for producing photovoltaic junction boxes and connectors.
摘要:
Provided is a pneumatic tire (1) including an inner liner (9) disposed inwardly in the tire relative to a carcass ply (6) bridged between a pair of bead portions (4). The inner liner (9) is formed of a first layer (PL1) disposed inwardly in the tire and a second layer (PL2, PL3) disposed to be in contact with a rubber layer of the carcass ply (6). The first layer (PL1) is a thermoplastic elastomer composition containing a thermoplastic elastomer containing at least one of a styrene-isobutylene-styrene block copolymer and an SIBS modified copolymer having a styrene block moiety modified with acid chloride or acid anhydride having an unsaturated bond. The thermoplastic elastomer composition also contains at least one of an ultraviolet absorber and an antioxidant. The second layer (PL2, PL3) is a thermoplastic elastomer composition containing at least one of a styrene-isoprene-styrene block copolymer and a styrene-isobutylene block copolymer.
摘要:
According to an aspect of the present invention, medical devices are provided that contain at least one polymeric region which contains (a) at least one block copolymer that contains at least at least three polymer blocks that differ from one another and (b) at least one therapeutic agent.
摘要:
The invention provides a thermoplastic elastomer composition that has an excellent balance between flexibility and heat resistance (creep resistance), shows little tackiness (stickiness) and is not deteriorated in design properties even when exposed to a high temperature. A thermoplastic elastomer composition (X) includes a propylene copolymer (A) satisfying all the requirements (A1) to (A3) described below, a crystalline polyolefin polymer (B) which is optional, and a styrene block copolymer (C). (A1) The Shore A hardness is in the range of 50 to 90. (A2) The copolymer gives a melting peak Tm in the range of 30 to 95°C, and the endothermic enthalpy ΔH corresponding to the melting peak is in the range of 1.0 to 20 J/g. (A3) The molecular weight distribution Mw/Mn is in the range of 1.2 to 3.0.
摘要:
This invention provides a polymer solid electrolyte comprising an ion liquid (A) and a block copolymer (B). The block copolymer (B) comprises, as indispensable components, one or more polymer blocks (P) compatible with the ion liquid (A) and one or more polymer blocks (Q) incompatible with the ion liquid (A). The ion liquid (A) and the polymer block (P) have been compatibilized with each other to constitute one phase (X), and the polymer block (Q) constitutes a phase (Y) incompatible with the phase (X). The phase (X) and the phase (Y) are separated from each other by microphase separation. The polymer solid electrolyte has practical ion conductivity and is excellent in the retention of the ion liquid, as well as in heat resistance and mechanical strength. There are also provided an electrochemical device and an actuator element that can rapidly produce a displacement upon response to the application of voltage and, by virtue of the liquid retention and mechanical strength of the polymer solid electrolyte, can be stably operated for a long period of time. Accordingly, the elctrochemical device and the actuator element are suitable for use, for example, in the field of medical equipment, micromachine, industrial robots, and personal robots.
摘要:
Farnesene interpolymer comprises units derived from a farnesene (e.g., a-farnesene or -farnesene) and units derived from at least one vinyl monomer. The farnesene interpolymer can be prepared by copolymerizing the farnesene and at least one vinyl monomer in the presence of a catalyst. In some embodiments, the farnesene is prepared from a sugar by using a microorganism. In other embodiments, the at least one vinyl monomer is ethylene, an a-olefin, or a substituted or unsubstituted vinyl halide, vinyl ether, acrylonitrile, acrylic ester, methacrylic ester, acrylamide or methacrylamide, or a combination thereof.