A polarizing plate of the present invention comprises a polarizer; an adhesive layer; and a transparent protective film bonded to at least one side of the polarizer with the adhesive layer interposed therebetween, wherein the adhesive layer is formed from an active energy ray curing adhesive containing at least one curable component, and the adhesive layer has a glass transition temperature (Tg) of 60° C or more, and a thickness of 001 μm an to 5 μm The polarizing plate has sufficient durability in a severe environment at high temperature and high humidity

Polarizing plate, optical film and image display

The invention relates to radiation-curable aqueous composition comprising an (meth)acrylated polyurethane pre-polymer obtained from the reaction of a polyisocyanate, optionally a polyol, at least one hydrophilic compound containing at least one reactive group capable to react with isocyanate groups and which is capable to render the polyurethane pre-polymer dispersible in aqueous medium either directly or after the reaction with a neutralizing agent to provide a salt, an (meth)acrylated compound containing at least two reactive groups capable to react with isocyanate groups and an (meth)acrylated compound containing essentially one reactive group capable to react with isocyanate groups, said composition comprising an amount of (meth)acrylated and polymerizable ethylenically unsaturated groups of at least 3 meq per g.

Aqueous radiation curable polyurethane compositions

An inkjet ink including a) an aqueous medium; and b) capsules composed of a polymeric shell surrounding a core; wherein the capsules are dispersed in the aqueous medium using a dispersing group covalently bonded to the polymeric shell; wherein the core contains one or more chemical reactants capable of forming a reaction product upon application of heat and/or light; wherein the polymeric shell includes a polymer selected from the group consisting of polyureas, polyesters, polycarbonates, polyamides, and melamine based polymers and copolymers thereof; and wherein the capsules have an average particle size of no more than 4 pm as determined by dynamic laser diffraction.

Aqueous resin based inkjet inks

An aqueous polyurethane resin is obtained by allowing at least a polyol compound, an active hydrogen group-containing compound having anionic group, an active hydrogen group-containing acrylate compound and an alkoxysilyl group-containing polyamine compound to react with a polyisocyanate compound.

Aqueous polyurethane resin

An inkjet printing method including the steps of: a) jetting on a substrate (10) one or more aqueous UV curable inkjet inks (1) including at least one photoinitiator (15) and capsules (3) composed of a cross-linked polymeric shell (4) surrounding a core (5), with the core (5) containing UV curable compounds (16); and b) applying UV radiation to the one or more aqueous UV curable inkjet inks (1) jetted on the substrate (10).

Uv curable inkjet inks

PURPOSE: To obtain an active energy ray-curable aqueous dispersion used for coating compositions giving coating films excellent in adhesiveness and chemical resistance such as solvent and alkali resistances by dispersing the microgel particles of an active energy ray-curable polyurethane resin in water. CONSTITUTION: This dispersion is obtained by dispersing in water the coating film-forming polyurethane resin microgel particles having active energy ray- curable unsaturated double bonds and salt groups and comprising one or more kinds of polyurethane resin skeletons selected from among polyester-, polyether(polyester)-, and polycarbonate-polyurethane resin skeletons and a cross-linked structure wherein the skeletons are cross-linked to each other through urethane bonds or urea bonds.

Active energy ray-curable aqueous dispersion

PROBLEM TO BE SOLVED: To obtain an active-energy-ray-curable water-base polyurethane resin compsn. which is excellent in the blocking resistance of an uncured coating film, in curability, and in solvent resistance after cured. SOLUTION: This urethane prepolymer is obtd. by reacting, as the essential reactants, a product obtd. by the Michael addition of a hydroxy compd. having an active hydrogen atom to double bonds of a compd. having at least two (meth)acryloyl groups, a polyhydroxy compd. having an acidic group, and a polyisocyanate compd. An active-energy-ray-curable water-base polyurethane resin compsn. is prepd. by using the prepolymer.

Urethane prepolymer, active-energy-ray-curable water-base polyurethane resin composition, and its production

PROBLEM TO BE SOLVED: To obtain the subject composition having high transparency, low adhesive viscosity, easily defoaming properties, a long pot life and a short hardening time by including a specific epoxy compound and a cationic photoinitiator, and specifying the viscosity. SOLUTION: The objective composition comprises (A) 100 pts.wt. epoxy compound liquid at normal temperature, (B) 0.5-30 pts.wt. cationic photoinitiator (e.g. an allene-ion complex), and (C) optionally a resin, an organic or inorganic pigment, a dye, a filler, a leveling agent, a defoaming agent, a coupling agent or the like, and has 20-2,000 mPa.s viscosity (at 25 deg.C). The component A is preferably the one comprising (i) >=30 wt.% alicyclic epoxy compound, and (ii) optionally an aliphatic epoxy compound liquid at the normal temperature (e.g. a polyethylene glycol diglycidyl ether), an aromatic epoxy compound (e.g. a bisphenol A-type epoxy resin), or the like. Formulas I to III, and the like, are cited as the component (i).

Ultraviolet-hardening type adhesive composition for optical member

PROBLEM TO BE SOLVED: To provide an active energy ray curable aqueous coating composition having excellent solvent resistance and adhesion, a coated metal material having a cured film of the composition, a method of manufacturing the coated metal material and a method of welding the coated metal materials together. SOLUTION: First, the active energy ray-curable aqueous coating composition comprises an aqueous resin having a chemically bonded phosphoric ester group and an ethylenically unsaturated double bond and/or a phosphoric ester compound having an ethylenically unsaturated double bond and an aqueous resin having an ethylenically unsaturated double bond. Second, the coated metallic material has an active energy ray-cured coating film which has a phosphoric ester group chemically bonded to an aqueous resin and a thickness of <=3 μm. Third, the method of manufacturing the coated metallic material is disclosed. Fourth, the method of welding the coated metallic materials together comprises welding the coated metallic materials together in the state of having the cured film thereon to effect welding.

Active energy ray curable aqueous coating composition, coated metal material having cured film of the composition, manufacturing method and welding method of coated metal material

PURPOSE: To provide a water-soluble actinic-radiation-curable resin useful in various fields such as coating agents and printing inks. CONSTITUTION: The resin is produced by reacting a compound having an acid anhydride group wish a compound having an active hydrogen atom and a radical-polymerizable unsaturation and neutralizing the formed free carboxyl groups with a tert. amine to form a carboxylate. COPYRIGHT: (C)1994,JPO

正則高瀬

Papers

Active energy ray-curable aqueous dispersion

Urethane prepolymer, active-energy-ray-curable water-base polyurethane resin composition, and its production

Ultraviolet-hardening type adhesive composition for optical member

Active energy ray curable aqueous coating composition, coated metal material having cured film of the composition, manufacturing method and welding method of coated metal material

Production of water-soluble actinic-radiation-curable resin

正則 高瀬

Papers

Active energy ray-curable aqueous dispersion

Urethane prepolymer, active-energy-ray-curable water-base polyurethane resin composition, and its production

Ultraviolet-hardening type adhesive composition for optical member

Active energy ray curable aqueous coating composition, coated metal material having cured film of the composition, manufacturing method and welding method of coated metal material

Production of water-soluble actinic-radiation-curable resin

正則高瀬