Provided is a UV curable sealing material containing a vinyl chloride sol as a main ingredient, the film strength of the sealing material being not reduced even in a thin film, the sealing material thus having high resistant pressure against a hem blister. Provided is a vinyl chloride sol composition containing a vinyl chloride-based resin, a UV curable resin having a polar group (functional group), a blocked isocyanate resin, and a filler, the vinyl chloride sol composition being characterized by containing the UV curable resin having a polar group (functional group) in an amount of 20 to 100 parts by weight, the blocked isocyanate resin in an amount of 10 to 50 parts by weight, and the filler in an amount of 50 to 160 parts by weight, relative to 100 parts by weight of the vinyl chloride-based resin.

The disclosure relates to compositions and methods useful for treating a substrate, for example for preventing or inhibiting corrosion of metal substrates. The compositions comprise (a) at least one cross-linkable, partially hydrolyzed polymer, and (b) at least one particular crosslinking agent.

The invention provides a method for determining whether a coated contact lens is completely covered by a covalently bonded coating, comprising the steps of (1) providing a coated polyvinylalcohol-based hydrogel contact lens wherein the polyvinylalcohol-based hydrogel lens body is composed of a polymer comprising at least 50% by mole of repeating units of vinyl alcohol, comprising a lubricious coating covalently attached to the lens body, (2) contacting the coated polyvinylalcohol-based hydrogel contact lens with an aqueous solution of a hydrophilic marker polymer for obtaining a treated contact lens, the hydrophilic marker polymer having reactive groups of ##STR00001##
in which R.sub.1 is methyl or ethyl and R.sub.2 is hydrogen or a C.sub.1-C.sub.4 alkyl and a dye tag moiety, at a pH of 4.0 or less for a contacting time to covalently attach the marker polymer onto the coated polyvinylalcohol-based hydrogel contact lens through 6-membered acetal rings, (3) determining whether marker polymer is (covalently) attached to the surface of the treated contact lens.

A cationic curing agent includes porous particles and a compound represented by General Formula (1), where the compound is held in the porous particles.

##STR00001##

In the General Formula (1), R.sup.1 is an alkyl group having 1 to 18 carbon atoms or a phenyl group, where the alkyl group may be branched and the alkyl group and the phenyl group may each further have a substituent. R.sup.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms where the alkyl group may be branched, a halogenoalkyl group, an alkoxy group, or a phenoxy group; where the alkyl group, the halogenoalkyl group, the alkoxy group, or the phenoxy group may further have a substituent. R.sup.1 and R.sup.2 may be identical to or different from each other.

An object of the present disclosure is to provide a golf ball having excellent spin performance on approach shots. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein an outermost layer of the paint film contains, as a base resin, a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition, and the outermost layer of the paint film has tackiness of 0.294 N or more measured with a friction tester.

An object of the present disclosure is to provide a golf ball from which stains are easily removed. The present disclosure provides a golf ball comprising a golf ball body and a paint film composed of at least one layer and formed on a surface of the golf ball body, wherein an outermost layer of the paint film contains, as a base resin, a polyurethane obtained by a reaction between a polyisocyanate composition and a polyol composition, and the outermost layer of the paint film has tackiness of less than 0.294 N measured with a friction tester.

In an embodiment, a composition comprises a plurality of reactive particles; wherein at least a first portion of the reactive particles comprises a first reactive monomer located in a first matrix polymer; wherein the first reactive monomer comprises a self-reactive monomer or wherein the first reactive monomer can polymerize with a second reactive monomer located in a second matrix polymer of a second portion of the reactive particles to form a coating polymer. In another embodiment, a method of making the plurality of reactive particles, comprises polymerizing a first matrix monomer in the presence of the first reactive monomer; or polymerizing the first matrix monomer to form a plurality of particles and swelling the plurality of particles with the first reactive monomer. In another embodiment, a method comprises cold spraying the plurality of reactive particles.

A three-dimensional object producing method including: forming a powder material layer with a powder material for three-dimensional object formation, where the powder material includes a base material and a resin including a reactive functional group; and applying a curing liquid to the powder material layer to form a cured product, where the curing liquid contains a curing agent capable of forming a covalent bond with the reactive functional group, wherein the curing agent includes an aliphatic compound having two or more isocyanate groups at a molecular terminal thereof.

A laminated film has a resin layer on at least one surface of a polyester film, in which the resin layer is on at least one surface layer, the water contact angle of the resin layer is 85°-100°, inclusive, and |H2−H1|≤1.0 (%) is satisfied, H1 (%) being the haze of the laminated film and H2 (%) being the haze of the laminated film after being immersed in a solvent and subjected to a rub test. This laminated film has excellent coating and releasability properties with respect to ceramic slurry.

Disclosed is a method for making a composite material, which is of particular use in wound treatment. The composite material has a hydrophilic polyurethane foam material with a first polyurethane polymer; a hydrophilic fiber material having a second polymer, wherein said second polymer is not a polyurethane polymer and wherein said fiber material is capable of absorbing and retaining a fluid. The first polymer is covalently bonded to the second polymer.