Abstract: The present invention relates to a pressure-sensitive adhesive tape including a substrate and at least one pressure-sensitive adhesive layer disposed on at least one surface of the substrate, in which the substrate is formed of an olefinic resin composition containing a polyolefin resin and a metal hydroxide, and in which the pressure-sensitive adhesive layer is formed of an emulsion-type acrylic adhesive composition containing an acrylic emulsion in which emulsion particles have a mean particle size of 0.2 ?m or less.

Abstract: The present invention relates to a pressure-sensitive adhesive tape including a substrate and at least one pressure-sensitive adhesive layer disposed on at least one surface of the substrate, in which the substrate is formed of an olefinic resin composition containing a polyolefin resin and a metal hydroxide, and in which the pressure-sensitive adhesive layer is formed of an emulsion-type acrylic adhesive composition containing an acrylic emulsion in which emulsion particles have a mean particle size of 0.2 ?m or less. The pressure-sensitive adhesive tape of the invention has excellent edge-peeling resistance and is capable of exhibiting a suitable rewinding power.

Abstract: A removable pressure sensitive adhesive composition includes at least (A) a hydroxyl-group-containing acrylic polymer, (B) an amine compound containing plural hydroxyl groups, and (C) a polyisocyanate compound and has a gel fraction of equal to or more than 70% by weight after drying or curing. A removable pressure sensitive adhesive sheet has a removable pressure sensitive adhesive layer including the removable pressure sensitive adhesive composition formed on one or both sides of a base material. The sheet may have a 180° peel force with respect to a melamine-faced steel sheet of 5 N/20-mm or less and may have a 180 ° peel force after adhesion at 50° C. for 48 hours of 1.2 times or less the initial adhesion (after adhesion at 23° C. for 20 minutes), as determined at a pulling rate of 300 mm/minute, 23° C. and 50% relative humidity.

Abstract: A highly adhesive pressure sensitive adhesive composition includes at least (A) a hydroxyl-group-containing acrylic polymer, (B) an amine compound containing plural hydroxyl groups, and (C) a polyisocyanate compound and has a gel fraction of equal to or more than 10% by weight and less than 70% by weight after drying or curing. A highly adhesive pressure sensitive adhesive sheet has a highly adhesive pressure sensitive adhesive layer including the highly adhesive pressure sensitive adhesive composition formed on one or both sides of a base material. The sheet preferably has a 180° peel force with respect to a stainless steel sheet of 10 N/20-mm or more as determined at a pulling rate of 300 mm/minute, 23° C. and 50% relative humidity.

Abstract: A pressure-sensitive adhesive tape is characterized by containing at least (A) an acrylic polymer, (B) a petroleum resin, and (C) a rosin-based resin, wherein the component (B) and the component (C) are contained in proportions of from 1 to 50 parts by weight and from 1 to 50 parts by weight, respectively based on 100 parts by weight of the component (A). In addition, it is preferable that the total sum of the component (B) and the component (C) is not more than 60 parts by weight based on 100 parts by weight of the component (A). As the rosin-based resin (C), a rosin ester-based resin is preferable.

Abstract: A highly adhesive pressure sensitive adhesive composition includes at least (A) a hydroxyl-group-containing acrylic polymer, (B) an amine compound containing plural hydroxyl groups, and (C) a polyisocyanate compound and has a gel fraction of equal to or more than 10% by weight and less than 70% by weight after drying or curing. A highly adhesive pressure sensitive adhesive sheet has a highly adhesive pressure sensitive adhesive layer including the highly adhesive pressure sensitive adhesive composition formed on one or both sides of a base material. The sheet preferably has a 180° peel force with respect to a stainless steel sheet of 10 N/20-mm or more as determined at a pulling rate of 300 mm/minute, 23° C. and 50% relative humidity.

Abstract: A removable pressure sensitive adhesive composition includes at least (A) a hydroxyl-group-containing acrylic polymer, (B) an amine compound containing plural hydroxyl groups, and (C) a polyisocyanate compound and has a gel fraction of equal to or more than 70% by weight after drying or curing. A removable pressure sensitive adhesive sheet has a removable pressure sensitive adhesive layer including the removable pressure sensitive adhesive composition formed on one or both sides of a base material. The sheet may have a 180° peel force with respect to a melamine-faced steel sheet of 5 N/20-mm or less and may have a 180° peel force after adhesion at 50° C. for 48 hours of 1.2 times or less the initial adhesion (after adhesion at 23° C. for 20 minutes), as determined at a pulling rate of 300 mm/minute, 23° C. and 50% relative humidity.

Abstract: An adhesive sheet comprising a substrate having formed on one surface or both surfaces thereof a rubber-like elastic layer, a heat-expandable layer, and an adhesive layer in the order from the substrate side.