Abstract: There are provided a useful resin composition for a back-surface layer and a heat-sensitive transfer recording material using the same, wherein under the circumstances where the temperature of thermal heads has been increased, the back-surface layer of the formed heat-sensitive transfer recording material has more excellent heat resistance, damage to a thermal head can be alleviated, and durability is excellent in that bleeding is suppressed even if the silicone content is increased. The present invention provides a resin composition for a back-surface layer to be used for forming a back-surface layer of a heat-sensitive transfer recording material, the resin composition containing, as film-forming components, a siloxane-modified urethane- or urea-based resin A, a resin B, and a cross-linking agent C, wherein the resin A contains a polysiloxane component in a range of 5 to 55%, the resin B has at least one active-hydrogen-containing group and has a glass transition point of lower than 100° C.

Abstract: The present invention provides nanometer-sized fibers that are produced by an electrospinning method with use of a spinning solution for electrospinning, said spinning solution being environmentally friendly and taking the effects of an organic solvent on the human body into consideration.

Abstract: A material for medical use, which contains nanofibers that are formed from a resin containing a silicone-modified polyurethane resin, and which is characterized in that: the silicone-modified polyurethane resin is a reaction product of (A) a long-chain polyol that has a number average molecular weight of 500 or more, (B) a short-chain polyol that has a number average molecular weight of less than 500, (C) an active hydrogen group-containing organopolysiloxane and (D) a polyisocyanate; and the average fiber diameter thereof is less than 2,000 nm. This material for medical use exhibits excellent performance in a biological test.

Abstract: Disclosed herein is a fiber formed from a resin including a silicone-modified polyurethane resin comprising the reaction products of a polyol (A), a chain extender (B), an active-hydrogen-group-containing organopolysiloxane (C), and a polyisocyanate (D), wherein the active-hydrogen-group-containing organopolysiloxane (C) contains an active-hydrogen-group-containing organopolysiloxane (C-1) having a carbinol group at only one terminal.

Abstract: Provided are: a polyurethane resin having a high degree of biomass, the polyurethane resin useful as a binder for a printing exhibiting excellent adhesion performance particularly to biomass plastic base materials and having excellent dispersibility of a pigment contained at a high concentration; and a printing ink using the polyurethane resin.

Abstract: A fiber formed from a resin including a silicone-modified polyurethane resin comprising the reaction products of a polyol (A), a chain extender (B), an active-hydrogen-group-containing organopolysiloxane (C), and a polyisocyanate (D), wherein the active-hydrogen-group-containing organopolysiloxane (C) contains an active-hydrogen-group-containing organopolysiloxane (C-1) having a carbinol group at only one terminal.

Abstract: Provided is a fiber formed from a resin containing a silicone-modified polyurethane resin. With the present invention, a characteristic fiber having excellent flexibility, slipping ability, blocking resistance, heat retaining property, water vapor permeability, water repellency, and spinnability can be provided.

Abstract: A thermal ink ribbon has a base sheet, a thermal recording layer arranged on one side of the base sheet, and a back layer arranged on an opposite side of the base sheet. The back layer according to the present invention comprises a polyurethane resin which is obtained by reacting a low molecular weight polymer having at least one active-hydrogen-containing group at one end of the molecule, a compound having at least one active-hydrogen group and at least one hydrophilic group except a hydroxide group, with a polyisocyanate. The back layer is excellent in the adhesiveness to a base sheet, the heat resistance relative to a thermal head and slipperiness to a thermal head; and the ink ribbon with such a back layer has no problems in printed characters and figures on printing, in the migration of impurities from the back layer into an ink layer, in smeariness of a thermal head and in its maintenance.

Abstract: A thermal ink ribbon has a base sheet, a thermal recording layer arranged on one side of the base sheet, and a back layer arranged on an opposite side of the base sheet. The back layer according to the present invention comprises a polyurethane resin which is obtained by reacting a low molecular weight polymer having at least one active-hydrogen-containing group at one end of the molecule, a compound having at least one active-hydrogen group and at least one hydrophilic group except a hydroxide group, with a polyisocyanate. The back layer is excellent in the adhesiveness to a base sheet, the heat resistance relative to a thermal head and slipperiness to a thermal head; and the ink ribbon with such a back layer has no problems in printed characters and figures on printing, in the migration of impurities from the back layer into an ink layer, in smeariness of a thermal head and in its maintenance.

Abstract: An ink-jet recording sheet is provided with at least one ink-receiving layer on at least one side of a base material sheet. A resin component which constitutes the ink-receiving layer comprises a hydrophilic resin containing tertiary amino groups in a molecule thereof or a hydrophilic resin containing tertiary amino groups and polysiloxane segments in a molecule thereof. A coating formulation suitable in use for the production of the ink-jet recording sheet is also disclosed.

Abstract: An ink-jet recording sheet is provided with at least one ink-receiving layer on at least one side of a base material sheet. A resin component which constitutes the ink-receiving layer comprises a hydrophilic polyurethane resin, hydrophilic polyurea resin, hydrophilic polyurethane-polyurea resin or hydrophilic polyamide resin having siloxane segments in a molecule thereof. As an alternative, the ink-receiving layer comprises a porous hydrophilic polyurethane resin, a porous hydrophilic polyurea resin or a porous hydrophilic polyurethane-polyurea resin.

Abstract: An ink-jet recording sheet is provided with at least one ink-receiving layer on at least one side of a base material sheet. A resin component which constitutes the ink-receiving layer comprises a hydrophilic resin containing tertiary amino groups in a molecule thereof or a hydrophilic resin containing tertiary amino groups and polysiloxane segments in a molecule thereof. A coating formulation suitable in use for the production of the ink-jet recording sheet is also disclosed.

Abstract: An ink-jet recording sheet is provided with at least one ink-receiving layer on at least one side of a base material sheet. A resin component which constitutes the ink-receiving layer comprises a hydrophilic resin containing hydrolyzable silyl groups in a molecule thereof, a hydrophilic resin containing hydrolyzable silyl groups and tertiary amino groups in a molecule thereof, or a hydrophilic resin containing hydrolyzable silyl groups, tertiary amino groups and polysiloxane segments in a molecule thereof. A coating formulation suitable in use for the production of the ink-jet recording sheet is also disclosed.

Abstract: The present invention provides an improved mink growth hormone gene, a recombinant DNA containing the improved mink growth hormone gene, microorganisms which belong to the genus Escherichia and contain the recombinant DNA and which are capable of producing a mink growth hormone, and a method for producing a mink growth hormone using the E.coli transformant containing the recombinant DNA. According to the present invention, a mink growth hormone is efficiently produced.