30results about How to "Excellent step followability" patented technology

The present invention aims to provide an adhesive sheet and a display body. There is provided the adhesive sheet 1 having an adhesive layer 2, wherein the adhesive layer 2 comprises a first adhesive layer 21 as an outer layer on one surface side, a second adhesive layer 22 as an outer layer on the other surface side and a third adhesive layer 23 positioned as an intermediate layer between the first adhesive layer 21 and the second adhesive layer 22.An adhesive constituting the first adhesive layer 21 and an adhesive constituting the second adhesive layer 22 have a storage modulus (G') at 23 DEG C of 0.1 MPa or more, respectively. The third adhesive layer 23 is constituted of an active energy ray-curable pressure-sensitive adhesive. The storage modulus (G') at 23 DEG C of the active energy ray-curable pressure-sensitive adhesive before curing is lower than the storage modulus (G') at 23 DEG C of the adhesive constituting the first adhesive layer 21 and the storage modulus (G') at 23 DEG C of the adhesive constituting the second adhesive layer 22.

The invention provides an adhesive composition, an adhesive, an adhesive sheet, and a display body. The adhesive composition has an excellent performance on preventing foaming. The adhesive composition comprises (meth)acrylate polymer (A), which comprises a monomer unit composed of hydroxyl monomers; polyrotaxane (B), which comprises hydroxyl taken as the reactive groups and cyclic oligosaccharide as the cyclic molecules; an isocyanate crosslinking agent (C); and a reaction promoter (D), which promotes the carbamate reactions.

The invention provides a double-surface adhesion sheet with excellent section difference following performance and excellent machinability, a display member obtained through using the double-surface adhesion sheet, and a manufacturing method thereof. The double-surface adhesion sheet (2) is provided with the components of a first adhesive layer (21) as an outer layer of a surface side; a second adhesive layer (22) as the outer layer of the other side; and a middle layer (23) between the first adhesive layer (21) and the second adhesive layer (22), wherein the glass transition temperature of the middle layer (23) is above 0 DEG C and below 60 DEG C.

The invention provides an adhesive composition, an adhesive, an adhesive sheet, and a display body. The adhesive composition can exert high coating strength. The adhesive composition comprises (meth)acrylate polymer (A), which comprises a monomer unit composed of hydroxyl monomers and fatty ring monomers; polyrotaxane (B), which comprises cyclic oligosaccharide as the cyclic molecules; and an isocyanate crosslinking agent (C).

Provided are: an adhesive agent to be used between two transparent conductive films or between a transparent conductive film and a covering material in a capacitive touch panel, the adhesive agent having a refractive index of 1.45 to 1.54 and a storage modulus at 80DEG C of 0.02 to 0.10 MPa and including no component that has a carboxyl group; and an adhesive sheet (1) that includes an adhesive layer (11) composed of the adhesive agent. The adhesive agent and adhesive sheet (1) can make a circuit pattern of the transparent conductive film less visible, have excellent step conformability, and do not adversely affect the transparent conductive film with a carboxyl group.

An adhesive sheet (1) that comprises an adhesive layer (11) having a thickness of 10 to 400 mum formed by crosslinking an adhesive composition including a (meth)acrylic acid ester copolymer (A) which has a weight-average molecular weight of 200,000 to 900,000, and includes 15 to 30 mass% of a monomer having a hydroxyl group and does not include a monomer having a carboxyl group as a monomer unit that constitutes the polymer, a polyisocyanate compound (B), and a chelate compound (C). The adhesive sheet (1) has excellent step conformability as well as excellent resistance to blisters and resistance to moisture, heat and whitening, and can suppress corrosion of transparent conductive films and metal lines and changes in resistance values of the transparent conductive films.

The present invention provides an adhesive sheet which is able to relieve stress during lamination, has high strength of a coating film, and is excellent in both gap tracking properties and blister resistance, a display body which is excellent in both gap tracking properties and blister resistance, and methods of manufacturing the adhesive sheet and the display body. To achieve the purpose, the adhesive sheet (1) of the present invention comprises an adhesive layer (11) for bonding one display body forming member to other display body forming member, wherein the adhesive layer (11) is formed of an active energy ray curable adhesive containing a polyrotaxane compound. It is preferable that the adhesive layer (11) not only has a crosslinking structure comprised of a (meth)acrylic acid estercopolymer (A) and a thermal crosslinking agent (B), but also is formed of an active energy ray curable adhesive containing an active energy ray curable component (C) and a polyrotaxane compound (D).

The invention provides a pressure-sensitive adhesive with excellent light diffuseness and excellent segment difference following ability. The pressure-sensitiveadhesive is obtained through crosslinking a (methyl)propiolate polymer (A) which has weight-average molecular weight above 300 thousands and less than 1500 thousands, a polyrotaxane compound (B) and a crosslinking agent (C). The (methyl)propiolate polymer (A) comprises at least one selected from a hydroxyl-containing monomer and a carboxyl-containing monomer as the monomer unit of the polymer. When the hydroxyl-containing polymer is contained, the content of the hydroxyl-containing polymer is less than 20wt%. When the carboxyl-containing monomer is contained, the content of the carboxyl-containing polymer is less than 15wt%. The polyrotaxane compound (B) comprises an annular molecule with a reactive group, wherein the gel fraction of the pressure-sensitive adhesive is above 20% and less than 99%.

An adhesive for cementing together one display element constituent member having a step on the surface on the to-be-cemented side and another display element constituent member, wherein the adhesive is obtained by causing an adhesive composition to be thermally crosslinked and cured using active energy rays, said composition containing a (meth)acrylic ester polymer (A) that includes a reactive-functional-group-containing monomer as a monomer unit constituting a polymer, a bi- or higher-functional component (B) that can be cured using active energy rays, and a thermally crosslinkable crosslinking agent (C). The adhesive composition contains the active-energy-ray-curable component (B) in such an amount that the gel fraction (G1) of the adhesive and the gel fraction (G2) of the adhesive formed by thermally crosslinking the adhesive composition from which the active energy ray curable component (B) has been excluded are substantially the same, and, assuming that the adhesive is formed into a layer measuring 600 mum in thickness and 10 mm in width, the maximum stress when the adhesive layer extends in length up to elongation at break at a measurement length of 20 mm and a tensioning rate of 200 mm / minute in a 23 DEG C, 50% RH environment is 2.8 N or more.

Provided is an adhesive which is obtained by crosslinking an adhesive composition containing (A) a (meth)acrylic acid ester polymer that has a weight average molecular weight of from 200,000 to 900,000 and contains, as a monomer unit that constitutes the polymer, more than 10% by mass but 30% by mass or less of a monomer having a hydroxyl group, (B) a crosslinking agent and (C) a crosslinking accelerator. This adhesive has a gel fraction of 40-90%. An adhesive layer which is formed of this adhesive has both excellent blister resistance and excellent level difference followability.

The present invention provides an adhesive sheet having a high film strength of an adhesive layer and excellent in both step followability and anti-bubble property, a display body excellent in both step followability and anti-bubble property, and the products thereof Preparation. The adhesive sheet (1) has an adhesive layer (11) for laminating one display constituent member (21) to another display constituent member (22), and the adhesive layer (11) is made of ultraviolet curable Composed of an adhesive, the adhesive has a cross-linked structure composed of a (meth)acrylate copolymer (A) and a thermal cross-linking agent (B), and contains an ultraviolet curable component (C), and at a concentration A photopolymerization initiator (D) having an absorbance of 0.3 or more at a wavelength of 380 nm in a 0.1 mass % acetonitrile solution.

The invention provides a pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body having good segment gap pursuit performance and good foaming resistance and manufacture methods for the pressure sensitive adhesion bonding agent compound, pressure sensitive adhesion bonding agent, pressure sensitive adhesion bonding sheet and display body having good segment gap pursuit performance and good foaming resistance. The pressure sensitive adhesion bonding agent compound contains a free radical polymer component A, an ion polymer component B, visible light active free radical polymer triggering agent C performing activation through visible light and ultraviolet light activation ion polymerization triggering agent D performing activation through ultraviolet light.

An acrylic pressure-sensitive adhesive tape including an acrylic pressure-sensitive adhesive layer, wherein a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to a glass plate is 10 N / 20 mm or more and a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to an acrylic plate is 10 N / 20 mm or more. The acrylic pressure-sensitive adhesive layer contains an acrylic polymer (A), has a gel fraction of 65% or more, and has a 300% tensile residual stress of from 7 to 16 N / cm2.

The present invention provides an adhesive sheet which has excellent light diffusion uniformity and excellent step-difference followability, and an optical laminate. The adhesive sheet (1) is providedwith a composite adhesive layer (11), the composite adhesive layer (11) is provided with a light diffusion adhesive layer (111) containing light diffusion particles and a transparent adhesive layer (112) not containing light diffusion particles, and at least one of the light diffusion adhesive layer (111) and the transparent adhesive layer (112) is composed of an active energy ray-curable adhesive.

The present invention provides an adhesive sheet capable of relaxing stress during lamination, having high film strength, and excellent in both step followability and anti-foaming properties, and excellent in both step followability and anti-foaming properties displays, and methods for their manufacture. The adhesive sheet (1) provided by the present invention is equipped with an adhesive layer (11) for laminating a display body component and other display body components, wherein: the adhesive layer (11) is made of active energy containing a polyrotaxane compound. A line curable adhesive is formed. The above-mentioned adhesive layer (11) preferably has a cross-linked structure composed of a (meth)acrylate copolymer (A) and a thermal cross-linking agent (B), and contains an active energy ray-curable component (C), Formed with an active energy ray-curable adhesive with a polyrotaxane compound (D).

The invention provides an adhesive sheet and a display body. The adhesive sheet (1) has an adhesive layer (2), wherein the adhesive layer (2) includes: a first adhesive layer (21), which is an outer layer on one surface side; a second adhesive layer (22), It is the outer layer on the other surface side: and the third adhesive layer (23), which is located between the first adhesive layer (21) and the second adhesive layer (22) as an intermediate layer, constituting the first adhesive layer (23). The storage modulus (G') of the adhesive of the adhesive layer (21) and the adhesive constituting the second adhesive layer (22) at 23°C is respectively above 0.1 MPa, and the third adhesive layer (23) is composed of active The composition of the energy ray curable adhesive, the storage modulus (G') of the adhesive constituting the first adhesive layer (21) and the storage modulus (G') of the adhesive constituting the second adhesive layer (22) ') compared to the storage modulus (G') of the active energy ray-curable adhesive before curing is lower.

The invention provides a touch panel (2) which is a capacitive touch panel (2). The touch panel is provided with two transparent conductive films (52) or a transparent conductive film (52) and a covermaterial (6) and is also provided with an adhesive layer (11) located between the two transparent conductive films (52) or between the transparent conductive film (52) and the cover material (6). Thetransparent conductive film (52) has a circuit pattern, and the adhesive layer (11) is formed from an adhesive, wherein the adhesive has a refractive index of 1.45-1.54, a storage elastic modulus atthe temperature of 80 DEG C of 0.02-0.10 MPa, and does not contain a component having a carboxyl group. According to the touch panel (2), the circuit pattern of the transparent conductive film (52) isnot obvious, the segment gap following performance is excellent, and the adverse effect on the transparent conductive film (52) due to carboxyl is avoided.

Provided is an ultraviolet-curable liquid organopolysiloxane composition for an image display device, which is capable of providing a cured product that has high transparency, excellent adhesiveness,good high-temperature durability, and excellent step-difference followability, and which is capable of being heat-cured even in a dark region. The ultraviolet-curable liquid organopolysiloxane composition for an image display device is characterized by containing: 100 parts by mass of (A) an organopolysiloxane or a mixture thereof with a mass ratio (A-1):(A-2) of (A-1) and (A-2) in the range of 100: 0 to 50: 50, (A-1) being a linear organopolysiloxane having at least two structures represented by general formula (1) in the molecule, and (A-2) being a branched organopolysiloxane having at leastone structure represented by general formula (1) in the molecule; 0.01 to 10 parts by mass of (B) a photopolymerization initiator; and (C) 0.01-5 parts by mass of a peroxide having a one-hour decomposition half-life temperature of 50-100 DEG C. [Chemical Formula 1] is shown in the description.

The invention provides a solvent-free adhesive composition, an adhesive sheet, and a display body, which are excellent in step followability and blister resistance. The solvent-free adhesive composition is a solvent-free adhesive composition for forming an adhesive layer (11), (11') for bonding one display member constituent member (21) and another display member constituent member (22). At leastone of the one display body constituent member (21) and another display body constituent member (22) is an ultraviolet shielding member having ultraviolet shielding properties. The solvent-free adhesive composition contains an active energy ray curable component (A), and a photopolymerization initiator (B) whose an absorbance at a wavelength of 390 nm in an acetonitrile solution having a concentration of 0.1% by mass is 0.3 or more.

An adhesive for sticking one display component and another display component having a level difference at least on the surface of the side to be pasted, the adhesive is formed by thermally crosslinking an adhesive composition and curing active energy rays The adhesive composition contains: a (meth)acrylate polymer (A) containing a reactive functional group-containing monomer as a monomer unit constituting a polymer, an active energy ray-curable component ( B), thermal cross-linking cross-linking agent (C); the content of component (B) in the adhesive composition is to make the gel part (G1) of the adhesive and to remove the component (B) from the adhesive composition ) of the adhesive composition thermally cross-linked with substantially the same amount of the gelled portion (G2) of the adhesive; and, when forming an adhesive layer with a thickness of 600 μm and a width of 10 mm, at 23° C. and 50% RH Under the environment, the maximum stress when stretched to the breaking elongation at a measured length of 20 mm and a tensile speed of 200 mm / min was 2.8 N or more.

The present invention provides a pressure-sensitive adhesive and a pressure-sensitive adhesive sheet that are excellent in both light diffusing properties and step followability. The pressure-sensitive adhesive is a pressure-sensitive adhesive containing a (meth)acrylate polymer (A), a polyrotaxane compound (B) and a crosslinking agent (C) with a weight average molecular weight of more than 300,000 and less than 1.5 million. A pressure-sensitive adhesive obtained by crosslinking an adhesive-sensitive composition, the (meth)acrylate polymer (A) containing at least one of a hydroxyl group-containing monomer and a carboxyl group-containing monomer as a unit constituting the polymer Body unit, when containing a hydroxyl-containing monomer, contain the hydroxyl-containing monomer with a content of less than 20 mass%, when containing a carboxyl-containing monomer, contain the carboxyl-containing monomer with a content of less than 15 mass%, the polyrotaxane compound ( B) It has a reactive group-containing cyclic molecule, and the gel fraction of the pressure-sensitive adhesive is not less than 20% and not more than 99%.

An acrylic pressure-sensitive adhesive tape including an acrylic pressure-sensitive adhesive layer, wherein a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to a glass plate is 10 N / 20 mm or more and a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to an acrylic plate is 10 N / 20 mm or more. The acrylic pressure-sensitive adhesive layer contains an acrylic polymer (A), has a gel fraction of 65% or more, and has a 300% tensile residual stress of from 7 to 16 N / cm2.

The present invention provides an adhesive sheet and a display body in which an adhesive layer has excellent step followability and can exhibit high film strength. The adhesive sheet (1) of the present invention has an adhesive layer (11) for adhering one display body constituent member and another display body constituent member having a level difference at least on the surface of the bonded side, wherein , for the adhesive constituting the adhesive layer (11), the modulus at break when the 1000% modulus or elongation of the adhesive is broken before reaching 1000% when a tensile test is carried out at 23°C is: 0.22 MPa or more, and the step tracking rate of the adhesive layer (11) is 30% or more.

The adhesive of the present invention is formed by cross-linking an adhesive composition, and the adhesive composition contains: (meth)acrylate polymer (A), which, as a monomer unit constituting the polymer, contains 8 to 30 mass % monomers with reactive functional groups; and rosin ester thickening liquid (B), and the gelling portion of the adhesive is 30-95%. Such an adhesive is excellent in both anti-foaming property and step followability.

A solvent-free acrylic resin composition includes an acrylic resin (A), wherein the acrylic resin (A) contains 5 wt. % to 60 wt. % of a structural moiety derived from a hydroxy group-containing monomer (a1), and an acid value in the resin composition is from 0.001 mgKOH / g to 0.3 mgKOH / g. The solvent-free acrylic resin composition is suppressed in viscosity rise due to heating, and is hence excellent in thermal stability; the composition can be thickly applied when used as an adhesive; and the composition can provide an adhesive excellent in step followability, corrosion resistance, and moist-heat haze resistance.

The present invention provides an adhesive and an adhesive sheet. The adhesive of the present invention is used between two transparent conductive films or between a transparent conductive film and a cover material in a touch panel of an electrostatic capacitance method. The refractive index of the adhesive is The ratio is 1.45 to 1.54, the storage elastic modulus at 80° C. is 0.02 to 0.10 MPa, and does not contain a component having a carboxyl group. The adhesive sheet (1) includes an adhesive layer (11) made of an adhesive. According to the adhesive agent and the adhesive sheet (1), the circuit pattern of the transparent conductive film can be made inconspicuous, the step followability is excellent, and the transparent conductive film is not adversely affected by the carboxyl group.