Abstract: A binder for an electrode of a lithium secondary battery contains a water dispersion of a polyurethane. The polyurethane has been formed of (A) a polyisocyanate, (B) a compound having two or more active hydrogen groups, (C) a compound having one or more active hydrogen groups and a hydrophilic group, and (D) a chain extending agent. The (B) compound having two or more active hydrogen groups contains an olefinic polyol and/or a carbonate diol having a carbon number between carbonate bond chains of less than 6. The binder has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in bindability and resistance to an electrolytic solution.

Abstract: The present application discloses a polyol composition for a polyurethane resin and a polyurethane-resin-formable composition that are capable of forming a polyurethane resin that exhibits a low resin viscosity during shaping, but has a high glass transition temperature, and a composite material. A polyol composition for a polyurethane resin includes an esterified compound (A) having an average esterification degree of 0.5 to 2.5, wherein the esterified compound (A) includes, as constituent components, a triol (a1) and a fatty acid (a2) having 2 to 18 carbon atoms.

Abstract: A binder for an electrode of a lithium secondary battery contains a water dispersion of a polyurethane. The polyurethane has been formed of (A) a polyisocyanate, (B) a compound having two or more active hydrogen groups, (C) a compound having one or more active hydrogen groups and a hydrophilic group, and (D) a chain extending agent. The (B) compound having two or more active hydrogen groups contains an olefinic polyol and/or a carbonate diol having a carbon number between carbonate bond chains of less than 6. The binder has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in bindability and resistance to an electrolytic solution.

Abstract: A binder for an electrode of a lithium secondary battery contains a polyurethane aqueous dispersion. The polyurethane aqueous dispersion contains a hydrophilic group-containing polyurethane obtained by using at least (A) an organic polyisocyanate and (B) a compound having one or more active hydrogen groups. (A) the organic polyisocyanate has a content of 50 mass % or more and 80 mass % or less based on the hydrophilic group-containing polyurethane. (B) the compound having one or more active hydrogen groups contains (B1) a compound having one or more active hydrogen groups and (B2) a compound having one or more active hydrogen groups and one or more ionic hydrophilic groups.

Abstract: A binder for an electrode of a lithium secondary battery contains a water dispersion of a polyurethane. The polyurethane has been formed of (A) a polyisocyanate, (B) a compound having two or more active hydrogen groups, (C) a compound having one or more active hydrogen groups and a hydrophilic group, and (D) a chain extending agent. The (B) compound having two or more active hydrogen groups contains an olefinic polyol and/or a carbonate diol having a carbon number between carbonate bond chains of less than 6. The binder has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in bindability and resistance to an electrolytic solution.

Abstract: To provide a binder that has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in binding capability and resistance to an electrolytic solution, and to provide a lithium secondary battery that is excellent in charge and discharge characteristics using an electrode produced with the binder. The binder for an electrode used contains a hydrophilic group-containing polyurethane as a water dispersion that contains (A) a polyisocyanate, (B) a compound that has two or more active hydrogen groups, (C) a compound that has one or more active hydrogen groups and one or more hydrophilic groups, and (D) a chain extending agent, or contains an aqueous resin composition containing a polymer of an unsaturated polymerizable monomer that is emulsified with the hydrophilic group-containing polyurethane.

Abstract: A binder for an electrode of a lithium secondary battery contains a polyurethane aqueous dispersion. The polyurethane aqueous dispersion contains a hydrophilic group-containing polyurethane obtained by using at least (A) an organic polyisocyanate and (B) a compound having one or more active hydrogen groups. (A) the organic polyisocyanate has a content of 50 mass % or more and 80 mass % or less based on the hydrophilic group-containing polyurethane. (B) the compound having one or more active hydrogen groups contains (B1) a compound having one or more active hydrogen groups and (B2) a compound having one or more active hydrogen groups and one or more ionic hydrophilic groups.

Abstract: A binder for an electrode of a lithium secondary battery contains a water dispersion of a polyurethane. The polyurethane has been formed of (A) a polyisocyanate, (B) a compound having two or more active hydrogen groups, (C) a compound having one or more active hydrogen groups and a hydrophilic group, and (D) a chain extending agent. The (B) compound having two or more active hydrogen groups contains an olefinic polyol and/or a carbonate diol having a carbon number between carbonate bond chains of less than 6. The binder has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in bindability and resistance to an electrolytic solution.

Abstract: To provide a binder that has high adhesiveness to a collector, does not cause release in press molding, has high flexibility, and is excellent in binding capability and resistance to an electrolytic solution, and to provide a lithium secondary battery that is excellent in charge and discharge characteristics using an electrode produced with the binder. The binder for an electrode used contains a hydrophilic group-containing polyurethane as a water dispersion that contains (A) a polyisocyanate, (B) a compound that has two or more active hydrogen groups, (C) a compound that has one or more active hydrogen groups and one or more hydrophilic groups, and (D) a chain extending agent, or contains an aqueous resin composition containing a polymer of an unsaturated polymerizable monomer that is emulsified with the hydrophilic group-containing polyurethane.

Abstract: A shaped sheet, comprising: a plurality of protrusions (3) on one surface side of the shaped sheet formed of fibers; and connecting portions (5) for being barriers and connecting the protrusions (3) to one another, wherein the connecting portion (5) has a fiber density higher than a fiber density of the protrusion (3).

Abstract: A stretchable absorbent core (10) includes a stretchable base sheet (20), and a plurality of separate and independent absorbers (30) disposed at least on one side of the base sheet (20). The absorbers (30) are fixed to the base sheet (20) through respective fixing points (33) in such a design that the shape of each absorber is not deformed upon stretch of the base sheet (20). The stretchable absorbent core (10) exhibits stretchability between the fixing points (33). It is preferable that the stretchable absorbent core (10) does not exhibit stretchability at the fixing points (33).

Abstract: An absorbent article (100) includes a topsheet (101), a backsheet (102), and an absorbent core (10). The absorbent core (10) includes a number of discretely and independently arranged absorbent members (30) located across a planar direction of the article (100). An intermediate sheet (20) is disposed between the topsheet (101) and the absorbent core (10) or between the backsheet (102) and the absorbent core (10). The absorbent members (30) are fixed to the intermediate sheet (20). It is preferable that an absorption rate of physiological saline solution measured by D/W method of each of the topsheet (101), the intermediate sheet (20), and the absorbent core (10) satisfies the following relationship: the topsheet (101)<the intermediate sheet (20)<the absorbent core (10).

Abstract: A stretch nonwoven fabric 10 contains inelastic fibers having a varied thickness along the length and elastic fibers. The nonwoven fabric 10 preferably includes an elastic fiber layer 1 and a substantially inelastic, inelastic fiber layer 2 on at least one side of the elastic fiber layer 1. The fibers with a varied thickness along the length are contained in the inelastic fiber layer 2. The nonwoven fabric 10 is conveniently produced by (a) superposing a web containing low-drawn, inelastic fibers having an elongation of 80% to 800% on at least one side of a web containing elastic fibers, (b) subjecting the webs, while in a non-united state, to through-air technique to obtain a fibrous sheet having the webs united together by thermal bonding the fibers at their intersections, and (c) stretching the fibrous sheet in at least one direction to draw the low-drawn inelastic fibers, followed by releasing the sheet from the stretch.

Abstract: A stretchable absorbent core (10) includes a stretchable base sheet (20), and a plurality of separate and independent absorbers (30) disposed at least on one side of the base sheet (20). The absorbers (30) are fixed to the base sheet (20) through respective fixing points (33) in such a design that the shape of each absorber is not deformed upon stretch of the base sheet (20). The stretchable absorbent core (10) exhibits stretchability between the fixing points (33). It is preferable that the stretchable absorbent core (10) does not exhibit stretchability at the fixing points (33).

Abstract: An absorbent article (100) includes a topsheet (101), a backsheet (102), and an absorbent core (10). The absorbent core (10) includes a number of discretely and independently arranged absorbent members (30) located across a planar direction of the article (100). An intermediate sheet (20) is disposed between the topsheet (101) and the absorbent core (10) or between the backsheet (102) and the absorbent core (10). The absorbent members (30) are fixed to the intermediate sheet (20). It is preferable that an absorption rate of physiological saline solution measured by D/W method of each of the topsheet (101), the intermediate sheet (20), and the absorbent core (10) satisfies the following relationship: the topsheet (101)<the intermediate sheet (20)<the absorbent core (10).

Abstract: A shaped sheet, comprising: a plurality of protrusions (3) on one surface side of the shaped sheet formed of fibers; and connecting portions (5) for being barriers and connecting the protrusions (3) to one another, wherein the connecting portion (5) has a fiber density higher than a fiber density of the protrusion (3).

Abstract: A stretch nonwoven fabric 10 includes an elastic fiber layer 1 and inelastic fiber layers 2 and 3 having substantial inelasticity on the respective sides of the elastic fiber layer 1. The fiber layers 1, 2, and 3 are joined together over the entire area by thermal fusion at fiber intersections while the fibers of the elastic fiber layer 1 remain the fibrous form. The inelastic fiber layers 2 and 3 have part of their fibers enter the elastic fiber layer 1 and/or the elastic fiber layer has part of its fibers enter the inelastic fiber layers 2 and 3. The stretch nonwoven fabric is preferably produced by stacking an elastic fiber web and an inelastic fiber web on each other, applying a through-air system hot air treatment to the stack while the webs are in a non-united state to obtain a fibrous sheet having the webs united together, stretching the fibrous sheet in at least one direction, and releasing the fibrous sheet from the stretched state.

Abstract: A stretch nonwoven fabric 10 contains inelastic fibers having a varied thickness along the length and elastic fibers. The nonwoven fabric 10 preferably includes an elastic fiber layer 1 and a substantially inelastic, inelastic fiber layer 2 on at least one side of the elastic fiber layer 1. The fibers with a varied thickness along the length are contained in the inelastic fiber layer 2. The nonwoven fabric 10 is conveniently produced by (a) superposing a web containing low-drawn, inelastic fibers having an elongation of 80% to 800% on at least one side of a web containing elastic fibers, (b) subjecting the webs, while in a non-united state, to through-air technique to obtain a fibrous sheet having the webs united together by thermal bonding the fibers at their intersections, and (c) stretching the fibrous sheet in at least one direction to draw the low-drawn inelastic fibers, followed by releasing the sheet from the stretch.

Abstract: For use as a wet strength agent, a water-soluble blocked urethane prepolymer having a hydrophilic group and a blocked isocyanate group is combined with a cationic charge-adjusting agent. The adsorption and retention of the water-soluble blocked urethane prepolymer to cellulosic fiber are promoted by virtue of the cationic charge adjusting agent when the wet strength agent is added to a paper-making stock.

Abstract: For use as a wet strength agent, a water-soluble blocked urethane prepolymer having a hydrophilic group and a blocked isocyanate group is combined with a cationic charge-adjusting agent. The adsorption and retention of the water-soluble blocked urethane prepolymer to cellulosic fiber are promoted by virtue of the cationic charge adjusting agent when the wet strength agent is added to a paper-making stock.