Provided are a pressure-sensitive adhesive composition for an optical film, which has excellent optical compensation and stress relaxation properties without changing main properties such as endurance reliability and workability under a high temperature and/or high humidity condition to minimize a light leakage phenomenon caused by stress concentration of a protective film, and an optical member and a liquid crystal display device which include a pressure-sensitive adhesive layer manufactured using the same.

An optical laminate is provided where stable durability is secured even at a high temperature, particularly an ultra-high temperature of about 100° C. or higher, no white turbidity is caused, other physical properties required for the optical laminate are also excellent, and even in the case of being disposed adjacent to the electrode, corrosion of the relevant electrode or the like is not induced.

Disclosed herein are sealing solutions for sealing water-soluble films, in particular aqueous mixtures including one or more polymeric solvents such as polyols. Aqueous sealing solutions including a relatively dilute solvent for one or more polymeric components of the water-soluble film (e.g., water-soluble polymeric components thereof, such as polyvinyl alcohol (PVOH)) can exhibit one or more benefits, including a reduction in dissolution of the film by the sealing solution and an increase in seal strength. Also disclosed are sealed articles formed with the sealing solutions, for example water-soluble packets containing various liquid or solid compositions.

A curable resin composition for forming an adhesive layer on at least one surface of a substrate (C), the curable resin composition comprising: a compound (A) represented by formula (1):

##STR00001##

wherein X represents a functional group containing a reactive group, and R.sup.1 and R.sup.2 each independently represent a hydrogen atom or an optionally substituted, aliphatic hydrocarbon, aryl, or heterocyclic group; and an adhesion aid compound (B), the curable resin composition satisfying formula (X): −10≦HSP (A)−HSP (B)≦10 and formula (Y): −10≦HSP (C)−HSP (B)≦10, wherein HSP (A) is an HSP value of the compound (A), HSP (B) is an HSP value of the adhesion aid compound (B), and HSP (C) is an HSP value of the substrate (C).

A one-side-protected polarizing film having a transparent protective film on only one surface of a polarizer, wherein: the polarizer contains a polyvinyl alcohol-based resin, has a thickness of 10 μm or less, and is designed to have a single-body transmittance T and a polarization degree P representing optical properties satisfying the condition of the following formula: P>−(10.sup.0.929T−42.4−1)×100 (provided that T<42.3) or P≧99.9 (provided that T≧42.3); and the other surface of the polarizer has a transparent layer thereon satisfying formula 1 (F≧3) and formula 2 (C≧e.sup.−0.7F), given that the thickness thereof is F (μm) and the compressive elastic modulus thereof at 80° C. is C (GPa). Even when the polarizer has prescribed optical properties and the thickness is 10 μm or less, this one-side-protected polarizing film is capable of suppressing through cracks and nano-slits.

The present invention pertains to a one-side-protected polarizing film having a transparent protective film on only one surface of a polarizer, wherein: the polarizer contains a polyvinyl alcohol-based resin, has a thickness of 10 μm or less, and is designed to have a single-body transmittance T and a polarization degree P representing optical properties satisfying the condition of the following formula: P>−(10.sup.0.929T−42.4−1)×100 (provided that T<42.3) or P≧99.9 (provided that T≧42.3); and the other surface of the polarizer has a transparent layer having a compressive elastic modulus at 80° C. of 0.1 GPa or more. Even when the polarizer has prescribed optical properties and the thickness is 10 μm or less, this one-side-protected polarizing film is capable of suppressing the occurrence of through cracks and nano-slits.

There is provided a vinyl alcohol-based polymer having an ethylenic double bond with a saponification degree of 70 mol % or more, wherein the vinyl alcohol-based polymer is water-soluble; a molar ratio of the ethylenic double bond to the total of vinyl alcohol units and vinyl acetate units is 0.05/100 to 2/100; and a limiting viscosity [η] and a weight-average molecular weight Mw of a vinyl ester-based polymer which is produced by esterifying the vinyl alcohol-based polymer satisfy the following formulas (1) and (2).

4.7≦log Mw 6.3   (1)

0.60<(log [η]+3.75)/log Mw<0.69   (2)

The present disclosure provides ethylene-vinyl alcohol copolymer resin compositions, and multilayer structure comprising the ethylene-vinyl alcohol copolymer resin compositions with uniform thickness.

Disclosed is a composition that comprises or is produced from a first ethylene α-olefin copolymer, a modified first ethylene α-olefin copolymer, and a second ethylene α-olefin copolymer or propylene α-olefin copolymer. Also disclosed is a multilayer film or sheet structure containing at least one barrier layer; at least one predominantly propylene-based layer, at least one predominantly ethylene-based layer, or both; and at least one adhesive layer produced from the composition. Further disclosed is a produced for producing a multilayer structure using the composition as adhesive layer.

A modified ethylene polymer having high fuel barrier property and excellent adhesion and mechanical strength, and also uses thereof are provided. The modified ethylene polymer, in which at least part of the ethylene polymer is graft-modified with an unsaturated carboxylic acid or a derivative thereof, has a graft modification of 0.15% by weight to 0.40% by weight, and has an elution amount at 80° C. or lower as determined by cross-fractionation chromatography that is not more than 10% by weight.