Problem to be solved of the present invention is to provide a hot-melt adhesive agent which is capable of applying at low temperature, has an excellent adhesiveness at low temperature, and a disposable product obtained by employing the hot-melt adhesive agent. Means for solving the problem is a hot-melt adhesive agent comprised of a thermoplastic block copolymer (A) which is a copolymer of vinyl class aromatic hydrocarbons and conjugated diene compounds, wherein the thermoplastic block copolymer (A) comprises a radial type styrene block copolymer having a styrene content of 35 to 45% by weight and a diblock content of 50 to 90% by weight, and having a viscosity at 25 C. as a 25% (by weight) toluene solution of not more than 250 mPa.Math.s (A1).

Provided are a modified hydrocarbon resin that can provide a hot-melt adhesive composition with low odor, low Gardner color and high peel adhesion, a method for producing the resin, and the hot-melt adhesive composition. A modified hydrocarbon resin comprising a 1,3-pentadiene monomer unit, a C4-C6 alicyclic monoolefin monomer unit, a C4-C8 acyclic monoolefin monomer unit, an alicyclic diolefin monomer unit, and an aromatic monoolefin monomer unit, and containing a carboxyl group or acid anhydride group, wherein a weight average molecular weight (Mw), a Z average molecular weight (Mz), a ratio (Mz/Mw), a Gardner color scale of a 50 mass % toluene solution, a softening point, and an acid value are in specific ranges.

Provided are a modified hydrocarbon resin that can provide a hot-melt adhesive composition with low odor, low Gardner color and high peel adhesion, a method for producing the resin, and the hot-melt adhesive composition. A modified hydrocarbon resin comprising a 1,3-pentadiene monomer unit, a C4-C6 alicyclic monoolefin monomer unit, a C4-C8 acyclic monoolefin monomer unit, an alicyclic diolefin monomer unit, and an aromatic monoolefin monomer unit, and containing a carboxyl group or acid anhydride group, wherein a weight average molecular weight (Mw), a Z average molecular weight (Mz), a ratio (Mz/Mw), a Gardner color scale of a 50 mass % toluene solution, a softening point, and an acid value are in specific ranges.

Provided are a modified hydrocarbon resin that can provide a hot-melt adhesive composition with low odor, low Gardner color and high peel adhesion, a method for producing the resin, and the hot-melt adhesive composition. A modified hydrocarbon resin comprising a 1,3-pentadiene monomer unit, a C4-C6 alicyclic monoolefin monomer unit, a C4-C8 acyclic monoolefin monomer unit, an alicyclic diolefin monomer unit, and an aromatic monoolefin monomer unit, and containing a carboxyl group or acid anhydride group, wherein a weight average molecular weight (Mw), a Z average molecular weight (Mz), a ratio (Mz/Mw), a Gardner color scale of a 50 mass % toluene solution, a softening point, and an acid value are in specific ranges.

The present disclosure relates to a copolymer A, which has (i) at least one repeating unit carrying an amide group and a carboxyl and/or its ammonium salt, (ii) at least one repeating unit derived from linear or branched C.sub.2-C.sub.18 ?-monoolefin, and (iii) at least one repeating unit derived from a monomer having at least two carbon-carbon unsaturated double bonds. The present disclosure also relates to an article comprising a component formed from the adhesive of the present invention.

The present disclosure relates to a copolymer A, which has (i) at least one repeating unit carrying an amide group and a carboxyl and/or its ammonium salt, (ii) at least one repeating unit derived from linear or branched C.sub.2-C.sub.18 ?-monoolefin, and (iii) at least one repeating unit derived from a monomer having at least two carbon-carbon unsaturated double bonds. The present disclosure also relates to an article comprising a component formed from the adhesive of the present invention.

Embodiments pertain to a system with a first surface and a second surface operational to associate with one another, where at least one of the first surface and the second surface includes an adhesive layer and a graphite layer positioned on the adhesive layer, and where the graphite layer reduces friction between the first surface and the second surface while the adhesive layer maintains the position of the graphite layer on at least the first surface and the second surface. Additional embodiments pertain to methods of modifying a system that includes a first surface and a second surface by applying an adhesive material to at least one of the first surface and the second surface to form an adhesive layer on at least one of the first surface and the second surface; and applying a graphite material onto the adhesive layer to form a graphite layer on the adhesive layer.

Embodiments pertain to a system with a first surface and a second surface operational to associate with one another, where at least one of the first surface and the second surface includes an adhesive layer and a graphite layer positioned on the adhesive layer, and where the graphite layer reduces friction between the first surface and the second surface while the adhesive layer maintains the position of the graphite layer on at least the first surface and the second surface. Additional embodiments pertain to methods of modifying a system that includes a first surface and a second surface by applying an adhesive material to at least one of the first surface and the second surface to form an adhesive layer on at least one of the first surface and the second surface; and applying a graphite material onto the adhesive layer to form a graphite layer on the adhesive layer.

An object of the present invention is to provide a pressure-sensitive adhesive sheet for a touch panel which is excellent for the operability of a capacitance-type touch panel, which is able to suppress the occurrence of malfunctions in a capacitance-type touch panel in a wide range of temperature environments from low temperatures to high temperatures, and which is also excellent in pressure-sensitive adhesion. In addition, another object of the present invention is to provide a laminate for a touch panel and a capacitance-type touch panel which include a pressure-sensitive adhesive sheet for a touch panel. In the pressure-sensitive adhesive sheet for a touch panel of the present invention, a relative dielectric constant obtained by impedance measurement at 1 MHz at 20 C. is 4.0 or more, a temperature dependency obtained from a temperature dependency evaluation test is 25% or less, and a 180 degree peel strength with respect to glass is 0.2 to 1.2 N/mm.

An object of the present invention is to provide a pressure-sensitive adhesive sheet for a touch panel which is excellent for the operability of a capacitance-type touch panel, which is able to suppress the occurrence of malfunctions in a capacitance-type touch panel in a wide range of temperature environments from low temperatures to high temperatures, and which is also excellent in pressure-sensitive adhesion. In addition, another object of the present invention is to provide a laminate for a touch panel and a capacitance-type touch panel which include a pressure-sensitive adhesive sheet for a touch panel. In the pressure-sensitive adhesive sheet for a touch panel of the present invention, a relative dielectric constant obtained by impedance measurement at 1 MHz at 20 C. is 4.0 or more, a temperature dependency obtained from a temperature dependency evaluation test is 25% or less, and a 180 degree peel strength with respect to glass is 0.2 to 1.2 N/mm.