Production method of the acrylic pressure-sensitive adhesive

    公开(公告)号:JP5264826B2

    公开(公告)日:2013-08-14

    申请号:JP2010112932

    申请日:2010-05-17

    Abstract: PROBLEM TO BE SOLVED: To provide an acrylic pressure-sensitive adhesive preferably used for adhesion and fixation of members to be used in a closed space, such as a vehicle and a housing, where odors become a problem or inside of electronic appliances where volatile gases become a problem, and to provide a pressure sensitive adhesive tape and a vehicular air conditioner unit produced by using the tape. SOLUTION: In the acrylic pressure-sensitive adhesive, a polymerizing initiator has a 10-hr half-life temperature of ≤80°C, the reaction temperature is kept higher than the 10-hr half-life temperature as a polymerization condition. The adhesive contains an acrylic polymer provided by polymerizing on the condition satisfying formula (5) when 10-hr half-life temperature of the polymerization initiator is t 1/2 and the polymerizing temperature of the polymerization end is T, and ≤13 wt.% tackifier having ≤600 molecular weight, and has ≤500 ppm volatile component concentration calculated from [volatile component amount (μg)/pressure-sensitive adhesive weight before heating (g)], when heated at 90°C for 30 min. COPYRIGHT: (C)2010,JPO&INPIT

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