A cleaning wiper blade comprises a hand grip part and an elastic part. The elastic part comprises a polyurethane. The polyurethane comprises a reactant of a composition including an isocyanate compound which includes diisocyanate and polyfunctional isocyanate, and an alcohol which includes polyfunctional alcohol. The diisocyanate has an aromatic ring in a molecule. When a molecule of the polyurethane is ionized with a mass spectrometer of a direct sample injection system, then obtained M1, M2 and M3 satisfy the is 0.013 to 0.300, and a concentration of the polyfunctional alcohol in the polyurethane is 0.12 mmol/g to 0.65 mmol/g.

An isocyanate composition according to the present invention contains: a difunctional or more-functional isocyanate compound; and 1.0 ppm by mass to 1.0 × 10.sup.4 ppm by mass, based on the isocyanate compound, of a compound having at least one unsaturated bond excluding unsaturated bonds constituting an aromatic ring, the compound being different from the isocyanate.

An isocyanate composition according to the present invention contains: a difunctional or more-functional isocyanate compound; and 1.0 ppm by mass to 1.0 × 10.sup.4 ppm by mass, based on the isocyanate compound, of a compound having at least one unsaturated bond excluding unsaturated bonds constituting an aromatic ring, the compound being different from the isocyanate.

A polymerizable composition for optical material including two or more different monomers for optical material and a polymerization catalyst, in which the content of the polymerization catalyst relative to the total amount of the monomers for optical material is from 0.1150 to 0.2000 parts by mass, the viscosity of the polymerizable composition for optical material is from 10 mPa.Math.s to 1000 mPa.Math.s as measured with a B-type viscometer at 20° C. and 60 rpm, and at least one of the two or more different monomers for optical material is an episulfide compound.

One embodiment according to the present disclosure relates to a spectacle lens containing a compound having a maximum absorption wavelength of 350 nm or more and 365 nm or less and a molar extinction coefficient of 20,000 l/mol.Math.cm or more.

Core shell microcapsules are provided wherein the capsule shell is an interfacial copolymer formed of a gelatin and an isocyanate.

Core shell microcapsules are provided wherein the capsule shell is an interfacial copolymer formed of a gelatin and an isocyanate.

The invention pertains generally to a low-pressure (100-250 psi) process of seaming adjacent seams of artificial turf using a one-component or a two-component polyurethane adhesive using an apparatus which employs a payoff spool of base material in the front of the apparatus and an activation trigger adjacent the handle to begin the application of polyurethane spray foam adhesive by connectivity between the application trigger and the foam spray gun trigger.

A process for producing an ether esterol, preferably a polyether esterol, by reacting an H-functional starter substance with a cyclic anhydride and an alkylene oxide in the presence of a catalyst is provided. An ether sterol and a process for preparing a polyurethane are also provided.

A process for producing an ether esterol, preferably a polyether esterol, by reacting an H-functional starter substance with a cyclic anhydride and an alkylene oxide in the presence of a catalyst is provided. An ether sterol and a process for preparing a polyurethane are also provided.