An adhesive film is formed of an adhesive composition that includes a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer, and nanoparticles. The adhesive film has a glass transition temperature (Tg) of about −20° C. or less, an index of refraction of about 1.40 to about 1.55, and a haze of about 3% or less at a thickness of 100 μm.

An adhesive film is formed of an adhesive composition that includes a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer, and nanoparticles. The adhesive film has a glass transition temperature (Tg) of about −20° C. or less, an index of refraction of about 1.40 to about 1.55, and a haze of about 3% or less at a thickness of 100 μm.

A sealing device including a waterproofing membrane, a sealant layer covering at least a portion of the second primary exterior surface of the waterproofing membrane and an adhesive layer covering a portion of the outer major surface of the sealant layer facing away from the second primary exterior surface of the waterproofing membrane, wherein the sealant layer is composed of an adhesive sealant composition comprising at least one elastomer, at least one at 25° C. liquid polyolefin resin, and at least one inert mineral filler. A method produces a sealing device, a method waterproofs a substrate, and a waterproofed substrate.

The present application provides a method for preparing a composite material. The present application provides a method for preparing a composite material comprising a metal porous body and a polymer component, wherein the polymer component is formed in an asymmetrical structure, and a composite material prepared in such a manner.

A reinforcing film comprises a pressure sensitive adhesive layer laminated and fixed on a principal surface of a film substrate. The pressure sensitive adhesive layer is formed of a photocurable composition containing a photocurable agent and a base polymer having a crosslinked structure. A frictional force of the pressure sensitive adhesive layer measured with a frictional force microscope at a frequency of 5 Hz is preferably 2 to 5 times a frictional force at a frequency of 0.1 Hz. After photocuring of the pressure sensitive adhesive layer, a frictional force of a photocured pressure sensitive adhesive layer measured with the frictional force microscope at a frequency of 5 Hz is preferably not less than 5 times a frictional force measured at a frequency of 0.1 Hz.

The present invention relates to an acryl-based adhesive composition containing an acryl-based copolymer, which is formed by polymerization of a monomer mixture that contains a (meth)acryl-based monomer having an acetoacetyl group, a (meth)acryl-based monomer having a hydroxy group, a (meth)acrylate monomer having an alicyclic group, and an alkyl (meth) acrylate-based monomer; and a curing agent containing a metal chelate compound and an isocyanate compound, in which the acryl-based adhesive composition has a glass transition temperature of −30° C. or greater after curing; and a polarizing plate and a display device prepared using the same.

Provided are a foldable back plate film and a method of manufacturing the same.

Provided is a polymer compound having a repeating unit represented by Formula 1A below:

##STR00001##

wherein in Formula 1A, Z.sup.1 represents a hydrogen atom or a monovalent group, R.sup.1 represents a group represented by Formula 1B, L.sup.1 represents a divalent group, n represents an integer of 1 or more, and in in Formula 1B, L.sup.2 represents a single bond or a divalent group, R.sup.2 represents a group selected from the group consisting of a hydroxy group and a group represented by *—OR.sup.3, R.sup.3 represents a hydrocarbon group which may have a hetero atom, a plurality of R.sup.3's may be bonded to each other to form a ring, * represents a bonding position, m represents an integer of 1 to 5, and a plurality of L.sup.1's and a plurality of R.sup.2's may be the same as or different from each other.

An adhesive layer (20a) has a creep deformation rate when a stress of 10000 Pa is applied at 50° C. for 1 second is 10% or less, and a creep deformation rate when a stress of 10000 Pa is applied at 50° C. for 30 minutes is 16% or less, in a creep test using a rotational rheometer, and has a 180° peel adhesive strength of 10 mN/20 mm or more with respect to a PMMA film.

An object of the present invention is to provide a pressure-sensitive adhesive sheet, an optical member, and a touch panel that enable a pressure-sensitive adhesive layer to be formed, the pressure-sensitive adhesive layer allowing the appearance of a display device and an input device to be unlikely to deteriorate even under low pressure conditions. The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive layer, and the number of the voids having a diameter of 300 μM or more in the following low pressure test is less than 10, and the number of the voids having a diameter of not less than 50 less than 300 μM in the following low pressure test is less than 20.