Abstract: A polyester-based pressure-sensitive adhesive composition which can be produced even from plant-derived raw materials with no need of using a costly silicone-based pressure-sensitive adhesive or the like and which is usable for producing a pressure-sensitive adhesive sheet excellent in wettability to an adherend, light peelability (removability), anti-staining property (little adhesive residues), and workability, and to provide a pressure-sensitive adhesive sheet using the composition. A polyester-based pressure-sensitive adhesive composition comprising a polyester obtained by condensation polymerization of at least a carboxylic acid component and a diol component, and a crosslinking agent, wherein the carboxylic acid component contains a dicarboxylic acid having a side chain in an amount of 50 to 90% by weight and a tricarboxylic acid having a side chain in an amount of 10 to 50% by weight, and wherein the polyester has a weight average molecular weight of 5000 to 150000.

Abstract: A polyester-based pressure-sensitive adhesive composition comprises a polyester obtained by condensation polymerization of at least a dicarboxylic acid having a side chain and a diol, a polyether polyol, and a crosslinking agent, wherein the polyester has a weight average molecular weight of 5000 to 50000, the polyether polyol contains a polyether polyol having hydroxyl groups at only part of terminals and/or all terminals, the polyether polyol having hydroxyl groups at only part of terminals has a number average molecular weight of 100 to 1500, and the polyether polyol having hydroxyl groups at only part of terminals is contained in an amount of 1 to 35 parts by weight based on 100 parts by weight of the polyester.

Abstract: Provided are a polyester-based pressure-sensitive adhesive composition having high wetting ability and superior adherability and light peelability, and a pressure-sensitive adhesive sheet produced with such a pressure-sensitive adhesive composition. The polyester-based pressure-sensitive adhesive composition includes a polyester obtained by polycondensation of a difunctional or polyfunctional carboxylic acid and a diol; a fatty acid ester; and a crosslinking agent, wherein the polyester has a weight average molecular weight of 8,500 to 50,000, and the fatty acid ester has no additional functional group and has a molecular weight of 200 to 700. The polyester-based pressure-sensitive adhesive composition contains 10 to 150 parts by weight of the fatty acid ester based on 100 parts by weight of the polyester.

Abstract: A polyester-based pressure-sensitive adhesive layer, pressure-sensitive adhesive tape, and double-coated pressure-sensitive adhesive tape each having high durability (high heating humidification storage stability) and good adhesive properties are provided using a polyester-based pressure-sensitive adhesive composition. The polyester-based pressure-sensitive adhesive composition of the invention includes a polyester, a hydrolysis-resistant agent, a tackifier with an acid value of 8 or less and a softening point of 80 to 170° C., and a crosslinking agent, and contains 20 to 100 parts by weight of the tackifier based on 100 parts by weight of the polyester.

Abstract: Provided are a film or sheet composed of a resin composition that includes a poly lactic acid (A), an acidic functional group-modified olefinic polymer (B) including an acidic functional group and having an acid value of 10 to 70 mg KOH/g and a weight average molecular weight of 10,000 to 80,000, a tetrafluoroethylene polymer (C), and a dicarboxylic acid ester-containing plasticizer (D) containing a compound of General Formula (1) and in which the dicarboxylic acid ester-containing plasticizer (D) is included in an amount of 8 parts by weight or more and less than 40 parts by weight based on 100 parts by weight of the poly lactic acid (A), and a method for manufacturing the film or sheet by melt film formation. Each sign in Formula is as described in the specification.

Abstract: Efficiently produced is a release liner including a plant-derived film as a substrate and having a good appearance, releasability, and adhesion. A method according to the present invention produces a release liner having a plant-derived film substrate and, on at least one side thereof, a release coat layer derived from a thermosetting silicone resin. The method includes the steps as follows: Step A of applying a thermosetting silicone release agent to at least one side of a plant-derived film substrate, the release agent containing 100 parts by weight of a thermosetting silicone resin and 0.05 to 0.55 part by weight of a curing catalyst; Step B of drying at 40° C. to 90° C. for 10 to 60 seconds after Step A; Step C of applying an ultraviolet ray at 50 to 300 mJ/cm2 after Step B; and Step D of aging at 30° C. to 70° C. for 12 to 240 hours after Step C.

Abstract: A surface protective pressure-sensitive adhesive sheet, which includes a pressure-sensitive adhesive layer obtained by crosslinking a polymer-containing pressure-sensitive adhesive composition, wherein the pressure-sensitive adhesive layer has a surface that has a hardness of 0.1 MPa or more and a load curve with a minimum load of ?0.3 ?N or less as measured by nanoindentation, and which has a residual adhesive strength of 50% or more, wherein the residual adhesive strength is calculated from the formula: residual adhesive strength (%)=100×[(adhesive strength B)/(adhesive strength A)], wherein adhesive strength A and adhesive strength B are as identified in the specification.

Abstract: A method of producing a polylactic acid based film or sheet with improved heat resistance and comprised of a resin composition containing a polylactic acid according to a melt film forming method, wherein the resin composition comprises polylactic acid (A), an acidic functional group-denatured olefin based polymer (B) containing an acidic functional group, and having an acid number of 10-70 mg KOH/g and a weight average molecular weight of 10,000-80,000, and a tetrafluoroethylene based polymer (C), which method comprises performing melt film formation at a temperature of the resin composition between the crystallization temperature (Tc) in a decreasing temperature process of the resin composition +15° C. and the melting temperature (Tm) in a raising temperature process ?5° C., or solidifying the resin composition melt-formed in a film state by cooling after a temperature controllable step at crystallization temperature (Tc) in the decreasing temperature process ±10° C.

Abstract: Provided is a double-sided pressure-sensitive adhesive tape that is for fixing an electronic device component, has excellent adhesion, retention, and repulsion resistance, and can be produced with a plant-derived material having a high biomass degree. This double-sided pressure-sensitive adhesive tape for fixing an electronic device component is characterized by comprising a pressure-sensitive adhesive layer having a biomass degree of 50% by weight or more.

Abstract: The purpose of the present invention is to provide: a polyester-based pressure-sensitive adhesive layer, for which a pressure-sensitive adhesive composition (pressure-sensitive adhesive solution) without any acrylic pressure-sensitive adhesive or the like which needs a large amount of an organic solvent and is difficult to apply thickly; to provide a polyester-based pressure-sensitive adhesive layer that is friendly to the global environment, can be applied thickly, has a high level of cost effectiveness and workability, and also has a high level of adhesion, retention, and repulsion resistance; and to provide a pressure-sensitive adhesive tape or double-sided pressure-sensitive adhesive tape having such a pressure-sensitive adhesive layer.

Abstract: A film or sheet composed of a resin composition including a poly lactic acid (A), an acidic functional group-modified olefinic polymer (B) including an acidic functional group and having an acid value of 10 to 70 mg KOH/g and a weight average molecular weight of 10,000 to 80,000, a tetrafluoroethylene polymer (C), and an aromatic cyclic phosphazene-containing flame retardant (D) including a compound of Formula (I) and in (D) is included in an amount of 10 to 70 parts by weight based on 100 parts by weight of (A), and a method for manufacturing the film or sheet by melt film formation.

Abstract: The present invention provides a polylactic acid film or sheet having tear strength so as not to break or tear during, for example, production or processing of the film or sheet or winding thereof into a roll, and causing neither melt nor deformation at high temperatures more than 100° C. In the polylactic acid film or sheet according to the present invention, the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: A polyester-based pressure-sensitive adhesive composition, including a polyester obtained by condensation polymerization of at least a dicarboxylic acid having a side chain and a diol, a polyether polyol, and a crosslinking agent, wherein the polyester has a weight average molecular weight of 5000 to 50000, the polyether polyol contains a polyether polyol having hydroxyl groups at only part of terminals and/or all terminals, the polyether polyol having hydroxyl groups at only part of terminals has a number average molecular weight of 100 to 1500, and the polyether polyol having hydroxyl groups at only part of terminals is contained in an amount of 1 to 35 parts by weight based on 100 parts by weight of the polyester.

Abstract: Provided are: a polyester-based pressure-sensitive adhesive composition which can be produced even from plant-derived raw materials with no need of using a costly silicone-based pressure-sensitive adhesive or the like and which is usable for producing a pressure-sensitive adhesive sheet excellent in wettability to an adherend, light peelability (removability), anti-staining property (little adhesive residues), and workability, and to provide a pressure-sensitive adhesive sheet using the composition. A polyester-based pressure-sensitive adhesive composition comprising a polyester obtained by condensation polymerization of at least a carboxylic acid component and a diol component, and a crosslinking agent, wherein the carboxylic acid component contains a dicarboxylic acid having a side chain in an amount of 50 to 90% by weight and a tricarboxylic acid having a side chain in an amount of 10 to 50% by weight, and wherein the polyester has a weight average molecular weight of 5000 to 150000.

Abstract: A film or sheet composed of a resin composition including a poly lactic acid (A), an acidic functional group-modified olefinic polymer (B) including an acidic functional group and having an acid value of 10 to 70 mg KOH/g and a weight average molecular weight of 10,000 to 80,000, a tetrafluoroethylene polymer (C), and an aromatic cyclic phosphazene-containing flame retardant (D) including a compound of Formula (I) and in which (D) is included in an amount of 10 to 70 parts by weight based on 100 parts by weight of (A), and a method for manufacturing the film or sheet by melt film formation.

Abstract: Provided are: a polyester-based pressure-sensitive adhesive composition which can be produced even from plant-derived raw materials with no need of using a costly silicone-based pressure-sensitive adhesive or the like and which is usable for producing a pressure-sensitive adhesive sheet excellent in wettability to an adherend, light peelability, removability, anti-staining property (little adhesive residues), and workability, and to provide a pressure-sensitive adhesive sheet using the composition. A polyester-based pressure-sensitive adhesive composition comprising a polyester obtained by condensation polymerization of at least a dicarboxylic acid having a side chain and an aliphatic diol having 3 to 10 carbon atoms and a crosslinking agent, wherein the polyester has a weight average molecular weight of 5000 to 60000.

Abstract: The present invention provides a separator including a separator substrate composed of a polylactic acid film or sheet having tear strength so as not to break or tear during production or processing of the separator. The separator is a separator including a separator substrate and a removable pressure-sensitive adhesive layer on at least one surface of the separator substrate, wherein the separator substrate is composed of a polylactic acid film or sheet comprising polylactic acid (A) wherein the tear strength of the film or sheet is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: The present invention provides a protection film including a substrate composed of a polylactic acid film or sheet having tear strength so as not to break or tear during production or processing of the protection film. The protection film according to the present invention is a protection film including a substrate and a removable pressure-sensitive adhesive layer on at least one surface of the substrate, wherein the substrate is composed of a polylactic acid film or sheet comprising polylactic acid (A) wherein the tear strength is not less than 100 N/mm when the film or sheet is torn at least in a flow direction (MD), a rate of dimensional change due to heating is not more than ±3% in the flow direction (MD) and in a transverse direction (TD), and a rate of dimensional change due to loaded heating is not more than ±3% in the flow direction (MD).

Abstract: Provided is a film or sheet composed of a resin composition that includes a poly lactic acid (A), an acidic functional group-modified olefinic polymer (B) including an acidic functional group and having an acid value of 10 to 70 mg KOH/g and a weight average molecular weight of 10,000 to 80,000, a tetrafluoroethylene polymer (C), and an aromatic-condensed phosphoric acid ester-containing flame retardant (D) including a compound of General Formula (I) and in which the aromatic-condensed phosphoric acid ester-containing flame retardant (D) is included in an amount of 10 to 80 parts by weight based on 100 parts by weight of the poly lactic acid (A), and a method for manufacturing the film or sheet by melt film formation. Each sign in Formula is as described in the specification.

Abstract: The present invention provides a transparent heat-resistant non-flammable film that has high transparency, heat resistance, and flame retardancy. The transparent heat-resistant non-flammable film according to the present invention includes a transparent heat-resistant protective layer comprising a polysiloxane resin containing a particulate inorganic oxide as a crosslinking agent on at least one surface of a transparent amorphous thermoplastic resin film having a heat distortion temperature of 250° C. or less. The transparent heat-resistant protective layer preferably has a refractive index in the range of 1.40 to 1.43. The transparent heat-resistant protective layer preferably has a thickness in the range of 1 to 100 ?m.