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 pressure-sensitive adhesive composition, a pressure-sensitive adhesive film, and a method of manufacturing an organic electronic device using the same. The pressure-sensitive adhesive composition that may effectively prevent moisture or oxygen added to an organic electronic device from an external environment, and exhibit reliability under harsh conditions such as high temperature and high humidity and excellent optical characteristics, and a pressure-sensitive adhesive film including the same are provided.

Provided are a pressure-sensitive adhesive composition, a pressure-sensitive adhesive film, and a method of manufacturing an organic electronic device using the same. The pressure-sensitive adhesive composition that may effectively prevent moisture or oxygen added to an organic electronic device from an external environment, and exhibit reliability under harsh conditions such as high temperature and high humidity and excellent optical characteristics, and a pressure-sensitive adhesive film including the same are provided.

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).

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).

In a method for the manufacture of a hydrocarbon resin made of at least one cyclic diolefin component and at least one ethylenically unsaturated aromatic component having 8 to 13 carbon atoms, the monomer mixture is heated to a polymerisation temperature of at least 180? C. at a heating speed of 0.5 to 10? C./second to obtain a hydrocarbon resin with a reduced amount of by-products, wherein the monomer mixture is essentially liquid in a single phase during the heating to at least 180? C. and during polymerisation, and the subsequently hydrogenated hydrocarbon resin has good compatibility with other components of hot-melt adhesives.

In a method for the manufacture of a hydrocarbon resin made of at least one cyclic diolefin component and at least one ethylenically unsaturated aromatic component having 8 to 13 carbon atoms, the monomer mixture is heated to a polymerisation temperature of at least 180? C. at a heating speed of 0.5 to 10? C./second to obtain a hydrocarbon resin with a reduced amount of by-products, wherein the monomer mixture is essentially liquid in a single phase during the heating to at least 180? C. and during polymerisation, and the subsequently hydrogenated hydrocarbon resin has good compatibility with other components of hot-melt adhesives.

The present invention relates to a petroleum resin having the content of a volatile organic compound component of less than 100 wt ppm; and a hydrogenated petroleum resin having the content of a volatile organic compound component of less than 100 wt ppm.

The present invention relates to a petroleum resin having the content of a volatile organic compound component of less than 100 wt ppm; and a hydrogenated petroleum resin having the content of a volatile organic compound component of less than 100 wt ppm.

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.