摘要:
Provided is a sheet for protecting coatings that shows superior adhesiveness even to coatings often causing low adhesive by bleeding for example of leveling agent and others without a washing treatment and the like, retains its preferable adhesion state for an extended period of time, and is easily releasable when separated even after being bonded for an extended period of time.The sheet for protecting coatings according to the present invention is characterized by including a supporting substrate and a pressure-sensitive adhesive layer formed at least on one side thereof, containing a rubber-based polymer and an aliphatic (meth)acrylic oligomer having a glass transition temperature of 30 to 100° C. and a weight-average molecular weight of 1000 to 20,000, wherein the blending amount of the (meth)acrylic oligomer is 0.02 to 1 wt part with respect to 100 wt parts of the rubber-based polymer.
摘要:
Disclosed is an acrylic pressure-sensitive adhesive composition that gives a pressure-sensitive adhesive layer exhibiting superior adhesiveness even to coatings, which are likely to cause low adhesion due to bleeding typically of a surface conditioner, without requiring, for example, washing process.The acrylic pressure-sensitive adhesive composition contains a vinyl monomer or a partial polymer thereof (a); and a (meth)acrylate co-oligomer (b), in which the vinyl monomer contains, as a main component, an alkyl(meth)acrylate monomer (a1) having an alkyl group with 2 to 14 carbon atoms, and the (meth)acrylate co-oligomer (b) has a weight-average molecular weight of from 1000 to 30000 and contains, as monomer components, 96 to 99.5 percent by weight of an alkyl(meth)acrylate (b1) and 0.1 to 4 percent by weight of a (meth)acryloyl group-containing silicone oil (b2).
摘要:
Provided is an adhesive method of pressure-sensitive adhesive sheet for vehicle coatings, giving a pressure-sensitive adhesive sheet highly adhesive even to a coating surface easily causing the low adhesion by bleed-out of leveling agent or the like.The adhesive method of pressure-sensitive adhesive sheet for vehicle coatings according to the present invention is characterized in that the difference (absolute value) between the solubility parameter (SP value) of a pressure-sensitive adhesive layer (X) formed on the side of the pressure-sensitive adhesive sheet in contact with the vehicle coating and the solubility parameter (SP value) of the surface control agent contained in the vehicle coating is 0.6 (cal/cm3)1/2 or less.
摘要翻译:提供了一种用于车辆涂料的粘合剂片的粘合方法,即使对涂层表面也具有高粘合性的粘合剂片,容易导致流平剂等的渗出而导致低粘合性。 根据本发明的车辆涂料用粘合片的粘合方法的特征在于,形成在粘合剂层侧的粘合剂层(X)的溶解度参数(SP值)之间的差(绝对值) 与车辆用涂料接触的粘合片和载体涂料中所含的表面控制剂的溶解度参数(SP值)为0.6(cal / cm 3)1/2以下。
摘要:
Provided is an adhesive method of pressure-sensitive adhesive sheet for vehicle coatings, giving a pressure-sensitive adhesive sheet highly adhesive even to a coating surface easily causing the low adhesion by bleed-out of leveling agent or the like.The adhesive method of pressure-sensitive adhesive sheet for vehicle coatings according to the present invention is characterized in that the difference (absolute value) between the solubility parameter (SP value) of a pressure-sensitive adhesive layer (X) formed on the side of the pressure-sensitive adhesive sheet in contact with the vehicle coating and the solubility parameter (SP value) of the surface control agent contained in the vehicle coating is 0.6 (cal/cm3)1/2 or less.
摘要翻译:提供了一种用于车辆涂料的粘合剂片的粘合方法,即使对涂层表面也具有高粘合性的粘合剂片,容易导致流平剂等的渗出而导致低粘合性。 根据本发明的车辆涂料用粘合片的粘合方法的特征在于,形成在粘合剂层侧的粘合剂层(X)的溶解度参数(SP值)之间的差(绝对值) 与车辆用涂料接触的粘合片和载体涂料中所含的表面控制剂的溶解度参数(SP值)为0.6(cal / cm 3)1/2以下。
摘要:
Disclosed is a pressure-sensitive adhesive sheet to be applied to a surface-conditioner-bearing surface of a vehicle coating. The sheet includes an acrylic pressure-sensitive adhesive layer (Y) as a pressure-sensitive adhesive layer to be in contact with the surface of the vehicle coating. The layer (Y) has been polymerized from an acrylic pressure-sensitive adhesive composition through the application of active energy rays, the composition includes a vinyl monomer mainly containing an alkyl (meth)acrylate (a1) whose alkyl moiety having 2 to 14 carbon atoms, or a prepolymer thereof (a); an active-energy-ray-activatable polymerization initiator (b); a multifunctional (meth)acrylate (c); and a (meth)acrylate oligomer (d) having a weight-average molecular weight of 1000 to 30000 and containing 1 to 50 parts by weight of a rosin-modified (meth)acrylate (d1) per 100 parts by weight of total monomer components. The pressure-sensitive adhesive sheet exhibits high bond strengths even to surface-conditioner-bearing surfaces of automotive coatings without being reduced in bond strength by the surface conditioner.
摘要:
Provided is an acrylic pressure-sensitive adhesive tape or sheet highly adhesive to hard-to-adhere adherends such as coatings having the surface control agent bleeding thereon.The acrylic pressure-sensitive adhesive tape or sheet, according to the present invention, having a viscoelastic layer (X) containing microspheres and an acrylic polymer containing an alkyl (meth)acrylate as the principal monomer component as the base polymer and a pressure-sensitive adhesive layer (Y) formed at least on one side of the viscoelastic layer (X) by irradiation of an acrylic monomer mixture or a prepolymer of the acrylic monomer mixture with active energy ray, wherein the amount of acrylic acid in the acrylic monomer mixture for the pressure-sensitive adhesive layer (Y) or a prepolymer of the acrylic monomer mixture is 6 to 12 wt % with respect to all monomer components and the amount of n-butyl acrylate is 35 to 65 wt % with respect to the total amount of 2-ethylhexyl acrylate and n-butyl acrylate.
摘要:
Disclosed is an acrylic pressure-sensitive adhesive tape or sheet that exhibits satisfactory adhesion to hard-to-adhere adherends.The acrylic pressure-sensitive adhesive tape or sheet includes a microsphere-containing viscoelastic layer (X); and a pressure-sensitive adhesive layer (Y) arranged on at least one side of the viscoelastic layer (X). The pressure-sensitive adhesive layer (Y) is derived from an acrylic pressure-sensitive adhesive composition through the application of an active energy ray, and the acrylic pressure-sensitive adhesive composition contains (a) a vinyl monomer mixture mainly containing an alkyl(meth)acrylate (a1) whose alkyl moiety has 2 to 14 carbon atoms, or a partial polymer of the vinyl monomer mixture; (b) a photoinitiator; and (c) an alkylphenol tackifier. The acrylic pressure-sensitive adhesive composition preferably contains 0.001 to 5 parts by weight of the photoinitiator (b) and 0.01 to 25 parts by weight of the alkylphenol tackifier (c) per 100 parts by weight of the vinyl monomer mixture or a partial polymer thereof (a).
摘要:
[Problem] To provide an adhesive sheet for protecting coating films which is excellent in the adhesion between a coating layer and a composite film, and has weather resistance.[Means for solving] The adhesive sheet for protecting coating films is one comprising a base layer and an adhesive layer, and the base layer has a coating layer produced by using the fluoroethylene vinyl ether alternating copolymer having a specific structure on one surface of a composite film containing an acrylic polymer and a urethane polymer. It is preferable that the coating layer is cross-linked with a composite film and has cross-linked points. [Selected drawing] None
摘要:
[Problem] To provide a composite film having light-curing property and weather resistance.[Means for solving] A composite film is one that comprises at least a urethane polymer, wherein both an initial b* value of the composite film measured by a spectrocolorimeter (value at an angle of 15 degrees) and a b* value after performing an accelerated weathering test for 120 hours (value at an angle of 15 degrees) are 4.0 or less, and a non-volatile component after heating the composite film at 130° C. for two hours is 96% or more.
摘要:
To provide a composite film having low-temperature flexibility. The composite film is a composite film including an acrylic polymer and a urethane polymer, in which the acrylic polymer includes an acryl component containing at least an acrylic acid-based monomer and a monofunctional acrylic monomer whose homopolymer has a glass transition temperature (Tg) of 273 K or more; the content of the acrylic acid-based monomer in the composite film is from 0.5 to 15 wt %; the glass transition temperature (Tg ac) of the acrylic polymer is 273 K or more; the glass transition temperature (Tg ur) of the urethane polymer is 273 K or less; and the glass transition temperature (Tg) of the composite film is 269 K or less.