The present invention provides a bio-electrode composition including: a resin containing a urethane bond in a main chain and a siloxane bond in a side chain; and an electro-conductive material, wherein the electro-conductive material is a polymer compound having one or more repeating units selected from fluorosulfonic acid salts shown by the following formulae (1)-1 and (1)-2, sulfonimide salts shown by the following formula (1)-3, and sulfonamide salts shown by the following formula (1)-4. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light in weight, manufacturable at low cost, and free from large lowering of the electric conductivity even when it is wetted with water or dried. The present invention also provides a bio-electrode in which the living body contact layer is formed from the bio-electrode composition, and a method for manufacturing the bio-electrode. ##STR00001##

An optical pressure-sensitive adhesive layer which can suppress the occurrence of foaming, peeling, lifting etc. on an adherend (an optical film) even when exposed to heating and humidification conditions; has excellent durability; can suppress surface unevenness due to light leakage; can suppress increases in adhering strength; and has excellent reworkability. An optical pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic polymer that contains 3 to 25% by weight of an aromatic ring-containing monomer as a monomer unit and has a polydispersity (weight average molecular weight (Mw)/number average molecular weight (Mn)) of 3.0 or less, wherein the optical pressure-sensitive adhesive layer has an adhering strength of 11 N/25 mm or less to glass.

An object of the present invention is to provide a novel golf ball having excellent spin performance on approach shots. The present invention 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 a base resin constituting an outermost layer of the paint film is a polyurethane obtained by a reaction between (A) a polyol composition and (B) a polyisocyanate composition, and a loss modulus (E) at the temperature of 50 C. obtained by measuring a dynamic viscoelasticity of the polyurethane is 1.0010.sup.8 Pa or more.

An object of the present invention is to provide a novel golf ball having excellent spin performance on approach shots. The present invention 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 a base resin constituting an outermost layer of the paint film is a polyurethane obtained by a reaction between (A) a polyol composition and (B) a polyisocyanate composition, and a loss modulus (E) at the temperature of 50 C. obtained by measuring a dynamic viscoelasticity of the polyurethane is 1.0010.sup.8 Pa or more.

A hybrid copolymer composition includes: a first proportion of an aliphatic-diisocyanate terminated polyol; a second proportion of an aromatic diisocyanate; a third proportion of an aromatic diamine curative configured to extend a chain length of the aliphatic-diisocyanate-terminated polyol and the aromatic diisocyanate; a fourth proportion of a polyester polyol configured to polymerize with the aliphatic-diisocyanate-terminated polyol; and a fifth proportion of a high functionality dendrimer configured to crosslink polymer chains of the aliphatic-diisocyanate-terminated polyol. Further, the hybrid copolymer can be configured to form a protective film layer in a foldable electronic display, the foldable electronic display including: a cover layer arranged over the protective film layer; and an array of organic light-emitting diodes arranged beneath the protective film layer.

A resin is provided, wherein the resin is formed by reacting 1 part by mole of a multi-isocyanate core with 3 to 4.5 parts by mole of diol to form an intermediate, and then reacting the intermediate with 3 to 4.5 parts by mole of first diisocyanate. The multi-isocyanate core can be a multi-isocyanate compound with more than two isocyanate groups. Alternatively, the multi-isocyanate core can be formed by reacting a second diisocyanate with a multi-hydroxy compound, and the multi-hydroxy compound has more than two hydroxy groups.

The present invention is a fluorine-containing copolymer including (A) a fluoroolefin in an amount of 15 to 85 mol % of all constituent monomers; (B) a specific organosilicon compound in an amount of 0.001 to 10 mol % of all the constituent monomers; (C) one or more monomers selected from vinyl ethers, vinyl esters, methacrylic esters and acrylic esters, the one or more monomers not having a curing reactive group and having an aliphatic saturated hydrocarbon group with 1 to 20 carbons, a glass transition temperature of a homopolymer of the monomer being lower than 0 C., in an amount of 5 to 40 mol % of all the constituent monomers; and (D) one or more monomers selected from vinyl ethers, vinyl esters, allyl ethers, methacrylic esters and acrylic esters, and having a curing reactive group, in an amount of 1 to 25 mol % of all the constituent monomers, wherein the fluorine-containing copolymer has a glass transition temperature of 30 C. to 20 C., a number average molecular weight of 2.010.sup.4 to 7.010.sup.4, and a weight average molecular weight of 1.010.sup.5 to 3.010.sup.5.

An object of the present invention is to provide a golf ball having excellent spin performance on approach shots under a wet condition and excellent spin performance on approach shots under a condition that there is grass between the golf ball and the dub face. The present invention 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 located at the outermost layer of the golf ball contains a base resin and a porous filler, the base resin contains a polyurethane obtained by a reaction between (A) a polyisocyanate composition and (B) a polyol composition containing a urethane polyol as a polyol component, the porous filler contains SiO.sub.2 in an amount of 50 mass % or more as a constituent component, and a loss tangent (tan ) of the outermost layer of the paint film measured with a dynamic viscoelasticity measuring apparatus under following conditions has a peak temperature in a range of from 43 C. to 40 C.

An object of the present invention is to provide a golf ball having excellent spin performance on approach shots under a wet condition and excellent spin performance on approach shots under a condition that there is grass between the golf ball and the dub face. The present invention 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 located at the outermost layer of the golf ball contains a base resin and a porous filler, the base resin contains a polyurethane obtained by a reaction between (A) a polyisocyanate composition and (B) a polyol composition containing a urethane polyol as a polyol component, the porous filler contains SiO.sub.2 in an amount of 50 mass % or more as a constituent component, and a loss tangent (tan ) of the outermost layer of the paint film measured with a dynamic viscoelasticity measuring apparatus under following conditions has a peak temperature in a range of from 43 C. to 40 C.

The present invention relates to a polyisocyanate (P) of general formula (I), the method for preparing polysisocyanate (P) of general formula (I) and the use of polyisocyanate (P) of general formula (I) as crosslinking reagent in clearcoats. The method for preparing polyisocyanate (P) of general formula (I) comprises the reaction of a reaction mixture (RM), which comprises at least one cyclic isocyanate of general formula (IIIa), (IIIb), (IIIc), (IIId), (IIIe) and/or (IIIf) and at least one alcohol having at least two hydroxyl groups, to obtain polyisocyanate (P) of general formula (I).