Abstract:
PROBLEM TO BE SOLVED: To provide a tacky adhesive sheet having initial tackiness, capable of adhering a metal to an organic material or the like, and having high adhesive strength and the adhesive strength hardly degrading by a temperature change.SOLUTION: The tacky adhesive sheet 1 has both of tackiness and adhesiveness and comprises a first release sheet 21A, a tacky adhesive layer 11 and a second release sheet 21B, wherein the tacky adhesive constituting the tacky adhesive layer 11 comprises one or more compounds selected from a vinyl formal resin, a rubber elastic epoxy resin and a core-shell particulate rubber, and an acrylic resin, an epoxy resin and a curing agent. After the tacky adhesive layer 11 is cured at 180°C for one hour, the layer shows a peak of glass transition temperature Tg within the range from 30 to 70°C. Further, the layer shows each one, in total two Tg peaks in the range from 30 to 70°C and in the range from 90 to 150°C, or one Tg in the range from 30 to 70°C and no Tg in the range from 90 to 150°C.
Abstract:
PROBLEM TO BE SOLVED: To provide a vinyl ether copolymer, which is excellent in adhesiveness and cohesiveness, and a self-adhesive composition using the vinyl ether copolymer, in particular, a vinyl ether copolymer, which exhibits high safety because of its low skin irritation property, and a medical self-adhesive composition using the vinyl ether copolymer.SOLUTION: The vinyl ether copolymer comprising structural units shown by a vinyl ether structural unit and a vinyl ether structural unit having a hydroxy group at the terminus is suitably applicable to a self-adhesive because of its excellent adhesiveness and cohesiveness and low skin irritation property.
Abstract:
PROBLEM TO BE SOLVED: To provide a vinyl ether copolymer, which is excellent in adhesiveness and cohesiveness, and a self-adhesive composition using the vinyl ether copolymer, in particular, a vinyl ether copolymer, which exhibits high safety because of its low skin irritation property, and a medical self-adhesive composition using the vinyl ether copolymer.SOLUTION: The vinyl ether copolymer, which is suitably applicable to a self-adhesive because of its excellent adhesiveness and cohesiveness and low skin irritation property, consists of structural units shown by following formulas (I) and (II): (I) -(-CHCH(OCH)-)-; (II) -(-CHCH(OCHOCHOH)-)-.
Abstract:
PROBLEM TO BE SOLVED: To provide a pressure sensitive adhesive sheet having a rubber adhesive layer excellent in heat resistance on a substrate. SOLUTION: This pressure sensitive adhesive sheet includes the substrate and the rubber adhesive layer formed thereon. In the adhesive sheet, the rubber adhesive layer is subjected to irradiation of an active energy ray to crosslink (A) an uncrosslinked rubber having an unsaturated bond in the molecule and (B) an uncrosslinked rubber material having an electron attractive group-containing multifunctional monomer. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
The present invention is directed to an antistatic pressure sensitive adhesive. The antistatic pressure sensitive adhesive comprises a pressure sensitive adhesive, and an antistatic agent comprising at least one organic salt. Certain embodiments of the antistatic pressure sensitive adhesive also have a luminous transmission of greater than about 89% according to ASTM D 1003-95. Additional embodiments of the antistatic pressure sensitive adhesive have a haze of less than about 5% according to ASTM D 1003-95, and in specific embodiments the haze is less than about 2% according to ASTM D 1003-95.