The present invention relates to an adhesive composition containing a base polymer and a water-absorbing material, wherein Young's modulus when an adhesive layer is formed is 450 kPa or more, an adhesive layer comprising the adhesive composition, and an adhesive sheet including the adhesive layer.

The present invention relates to an adhesive composition containing a base polymer and a water-absorbing material, wherein Young's modulus when an adhesive layer is formed is 450 kPa or more, an adhesive layer comprising the adhesive composition, and an adhesive sheet including the adhesive layer.

The present invention relates to an adhesive composition containing a base polymer and a water-absorbing material, wherein Young's modulus when an adhesive layer is formed is 450 kPa or more, an adhesive layer comprising the adhesive composition, and an adhesive sheet including the adhesive layer.

The present invention relates to an adhesive sheet including an adhesive layer comprising an adhesive composition containing a base polymer and a moisture-curable component, wherein an adhesive surface is peelably covered with a layer having moisture permeability of 5 g/m.sup.2.Math.24 hrs or less.

The present invention relates to an adhesive sheet including an adhesive layer comprising an adhesive composition containing a base polymer and a moisture-curable component, wherein an adhesive surface is peelably covered with a layer having moisture permeability of 5 g/m.sup.2.Math.24 hrs or less.

A polymer pre-laid waterproof rolling material, comprising a polymer base material layer, a pressure-sensitive adhesive layer on the polymer base material layer, and a sand anti-sticking layer on the pressure-sensitive adhesive layer; the pressure-sensitive adhesive layer includes: 25-35 parts by mass of a styrene-isoprene-styrene block copolymer; 32-38 parts by mass of a C5 petroleum resin; 5-12 parts by mass of a 145 pentaerythritol modified rosin resin; 25-32 parts by mass of a naphthenic oil; 0.3 parts by mass of an antioxidant; and 0.5 parts by mass of a UV light stabilizer; the C5 petroleum resin has a softening point of 95-105° C. and a color number of less than 4; the naphthenic oil has a kinematic viscosity of 9-11 mm.sup.2 at 100° C. and a density of 0.8950 g/cm.sup.3-0.9100 g/cm.sup.3 at 20° C. The pressure-sensitive adhesive layer has a stronger bonding effect with sintered sand and further improves the bonding effect with concrete.

A polymer pre-laid waterproof rolling material, comprising a polymer base material layer, a pressure-sensitive adhesive layer on the polymer base material layer, and a sand anti-sticking layer on the pressure-sensitive adhesive layer; the pressure-sensitive adhesive layer includes: 25-35 parts by mass of a styrene-isoprene-styrene block copolymer; 32-38 parts by mass of a C5 petroleum resin; 5-12 parts by mass of a 145 pentaerythritol modified rosin resin; 25-32 parts by mass of a naphthenic oil; 0.3 parts by mass of an antioxidant; and 0.5 parts by mass of a UV light stabilizer; the C5 petroleum resin has a softening point of 95-105° C. and a color number of less than 4; the naphthenic oil has a kinematic viscosity of 9-11 mm.sup.2 at 100° C. and a density of 0.8950 g/cm.sup.3-0.9100 g/cm.sup.3 at 20° C. The pressure-sensitive adhesive layer has a stronger bonding effect with sintered sand and further improves the bonding effect with concrete.

Provided is a curable petroleum resin, and a preparation method and a use thereof, the curable petroleum resin comprising a repeating unit derived from a petroleum resin monomer, a repeating unit derived from a silane monomer and a repeating unit derived from a C3-C20 alpha-olefin monomer. The curable petroleum resin is used as an additive in a reactive polyolefin-based adhesive composition to increase the adhesive strength to a polyolefin-based substrate used for various parts.

Provided is a curable petroleum resin, and a preparation method and a use thereof, the curable petroleum resin comprising a repeating unit derived from a petroleum resin monomer, a repeating unit derived from a silane monomer and a repeating unit derived from a C3-C20 alpha-olefin monomer. The curable petroleum resin is used as an additive in a reactive polyolefin-based adhesive composition to increase the adhesive strength to a polyolefin-based substrate used for various parts.

Provided is a hot melt adhesive sheet comprising a hot melt adhesive that comprises a styrene-based block copolymer and a tackifier, in which the styrene-based block copolymer comprises a hard segment composed of a polystyrene block and a soft segment composed of a constituent unit derived from propylene.