Abstract: To afford a laminated body that is usable as a nonaqueous electrolyte secondary battery separator and that is not easily curled, a laminated body includes: a porous base material containing a polyolefin-based resin as a main component; and a porous layer containing a polyvinylidene fluoride-based resin, the porous base material having a temperature rise ending period of a particular value with respect to the amount of resin per unit area, the polyvinylidene fluoride-based resin containing crystal form ? in an amount of not less than 36 mol % with respect to 100 mol % of a total amount of the crystal form ? and crystal form ? contained in the polyvinylidene fluoride-based resin.

Abstract: An adhesive resin composition for a secondary battery for bonding a separator for a secondary battery and an electrode for a secondary battery, wherein the composition comprises an adhesive resin having a unit derived from an aromatic vinyl monomer and having a glass transition temperature of 25° C. or lower.

Abstract: A porous membrane is provided having a compound having an ionic group and a hydrophobic group, a metal oxide, and a binder resin. The content of the compound having an ionic group and a hydrophobic group is 0.2 to 2 parts by mass relative to 100 parts by mass of the metal oxide.

Abstract: A separation preventing device that prevents separation of a fluid pipe in a pipe axis direction, includes a main body externally fitted to an outer peripheral surface of the fluid pipe and has a recess portion facing the outer peripheral surface; a locking member housed in the recess portion in a tiltable manner and is able to bite into the outer peripheral surface of the fluid pipe; a pressing member provided in the main body member and presses the locking member so as to bite into the outer peripheral surface of the fluid pipe; and an interposition member interposed between the locking member and the pressing member, wherein the interposition member is equipped with a tapered surface coming into contact with an outer surface of the locking member, and is housed in the recess portion in a state of having an acceptable movement value of a predetermined width in the pipe axis direction of the fluid pipe.

Abstract: As a nonaqueous electrolyte secondary battery porous layer having an excellent cycle characteristic, provided is a nonaqueous electrolyte secondary battery porous layer containing: an inorganic filler; and a polyvinylidene fluoride-based resin, the nonaqueous electrolyte secondary battery porous layer containing the inorganic filler in an amount of not less than 50% by weight relative to a total weight of the inorganic filler and the polyvinylidene fluoride-based resin, the polyvinylidene fluoride-based resin containing an ?-form polyvinylidene fluoride-based resin and a ?-form polyvinylidene fluoride-based resin, assuming that a sum of (i) an amount of the ?-form polyvinylidene fluoride-based resin and (ii) an amount of the ?-form polyvinylidene fluoride-based resin is 100 mol %, the amount of the ?-form polyvinylidene fluoride-based resin being not less than 45 mol %.

Abstract: A laminated body of the present invention includes: a porous film containing a polyolefin as a main component; and a porous layer containing a resin, the laminated body satisfying (A)>(B), where (A) represents the amount of an increase in the dielectric strength with respect to the amount of an increase in the amount of the resin contained per unit area of the porous layer, and (B) represents the amount of an increase in the dielectric strength with respect to the amount of an increase in the amount of the polyolefin contained per unit area of the porous film. The laminated body is usable as a secondary battery separator having a higher dielectric strength.

Abstract: A laminated body of the present invention includes: a porous film containing a polyolefin as a main component; and a porous layer on at least one surface of the porous film, the porous layer containing a resin, the laminated body satisfying 0?(A)?(B)?20 mN/m, where (A) represents the critical surface tension over the outermost surface of the porous layer, and (B) represents the critical surface tension that, in a case where the porous layer has been peeled from the laminated body at an interface with the porous film, the porous film has on the side of the interface.

Abstract: A first laminated body includes: a porous film containing a polyolefin as a main component; and a porous layer on at least one surface of the porous film, the porous layer containing a resin. A second laminated body includes: a porous film containing a polyolefin as a main component; and a porous layer containing a resin. The laminated body is usable as a secondary battery separator having a higher dielectric strength. A third laminated body is provided in which occurrence of a curl is prevented. A nonaqueous secondary battery separator is provided disposed between a cathode and an anode, the separator including: a porous base material containing a polyolefin as a main component; and a porous layer on at least one surface of the porous base material, the porous layer containing a polyvinylidene fluoride-based resin.

Abstract: A porous membrane is provided having a compound having an ionic group and a hydrophobic group, a metal oxide, and a binder resin. The content of the compound having an ionic group and a hydrophobic group is 0.2 to 2 parts by mass relative to 100 parts by mass of the metal oxide.

Abstract: The present invention provides a nonaqueous electrolyte secondary battery separator which has an excellent rate characteristic and an excellent cycle characteristic and which is a porous film containing a polyolefin resin as a main component, the nonaqueous electrolyte secondary battery separator causing a diminution rate of diethyl carbonate dropped on the porous film to be 15 sec/mg to 21 sec/mg, and the nonaqueous electrolyte secondary battery separator causing a spot diameter of the diethyl carbonate 10 seconds after the diethyl carbonate was dropped on the porous film to be equal to or greater than 20 mm.

Abstract: A porous membrane is provided including a compound having a hydrophobic group and a nonionic hydrophilic group, an inorganic powder, and a binder resin.

Abstract: A nonaqueous secondary battery separator, disposed between a cathode and an anode, includes: a porous base material containing a polyolefin as a main component; and a porous layer containing a polyvinylidene fluoride-based resin on at least one surface of the porous base material. The separator satisfies (C)/(D)?0.13, where (C) represents the average pore diameter (?m) of the porous base material, and (D) represents the porosity of the porous base material, in the porous layer after being immersed for 24 hours in an electrolyte solution having a temperature of 25° C. in which electrolyte solution LiPF6 having a concentration of 1.0 mole per liter is dissolved in a mixed solvent containing ethyl methyl carbonate, diethyl carbonate, and ethylene carbonate at a volume ratio of 50:20:30, the resin having absorbed the electrolyte solution having a volume of 0.05 to 5.00 cm3 per square meter of the porous layer.

Abstract: The present invention provides a laminated separator, for a nonaqueous electrolyte secondary battery, (i) including a porous film and a porous layer containing a polyvinylidene fluoride-based resin and (ii) having an excellent rate characteristic. The laminated separator includes: the porous film containing a polyolefin-based resin as a main component; and the porous layer containing the polyvinylidene fluoride-biased, resin, a surface of the porous layer having a 60-degree specular gloss of 3% to 26%.

Abstract: The present invention provides a laminated separator, for a nonaqueous electrolyte secondary battery, suppressing a deterioration in cycle characteristic. The laminated separator includes: a porous film containing a polyolefin-based resin; and a porous layer, a surface of the porous layer having a 60-degree specular gloss of 3% to 26%, a volume per unit area of the porous layer being 0.1 cm3/m2 to 2.5 cm3/m2.

Abstract: The present invention provides, as a porous layer that can be used for a member for a non aqueous secondary battery having excellent shutdown characteristics, a porous layer including a polyvinylidene fluoride-based resin, wherein, assuming that a sum of individual amounts of crystal form ? and crystal form ? contained in the polyvinylidene; fluoride-based resin is 100 mol %, the amount of crystal form ? contained in the polyvinylidene fluoride-based resin is not less than 10 mol % and not more than 65 mol %.

Abstract: A nonaqueous electrolyte secondary battery separator is provided. The nonaqueous electrolyte secondary battery separator is made of a porous film containing a polyolefin-based resin as a main component and has a 60-degree specular gloss of 6% to 30%. The nonaqueous electrolyte secondary battery separator suppresses a deterioration in cycle characteristic, without including another porous layer in addition to the porous film containing the polyolefin-based resin as a main component.

Abstract: A laminated body of the present invention includes: a porous film containing a polyolefin as a main component; and a porous layer containing a resin, the laminated body satisfying (A)>(B), where (A) represents the amount of an increase in the dielectric strength with respect to the amount of an increase in the amount of the resin contained per unit area of the porous layer, and (B) represents the amount of an increase in the dielectric strength with respect to the amount of an increase in the amount of the polyolefin contained per unit area of the porous film. The laminated body is usable as a secondary battery separator having a higher dielectric strength.

Abstract: A laminated body of the present invention includes: a porous film containing a polyolefin as a main component; and a porous layer on at least one surface of the porous film, the porous layer containing a resin, the laminated body satisfying 0?(A)?(B)?20 mN/m, where (A) represents the critical surface tension over the outermost surface of the porous layer, and (B) represents the critical surface tension that, in a case where the porous layer has been peeled from the laminated body at an interface with the porous film, the porous film has on the side of the interface.

Abstract: An adhesive resin composition for a secondary battery for bonding a separator for a secondary battery and an electrode for a secondary battery, wherein the composition comprises an adhesive resin, the adhesive resin contains the following (A) and (B), and the phase composed of (A) and (B) has a core shell heterophase structure and/or a sea-island heterophase structure: (A) a resin having a glass transition temperature of ?30° C. to +20° C., (B) a resin having a glass transition temperature 20° C. to 200° C. higher than the glass transition temperature of (A).

Abstract: A separation preventing device that prevents separation of a fluid pipe in a pipe axis direction, includes a main body externally fitted to an outer peripheral surface of the fluid pipe and has a recess portion facing the outer peripheral surface; a locking member housed in the recess portion in a tiltable manner and is able to bite into the outer peripheral surface of the fluid pipe; and pressing units that are provided in the main body and press the locking member, wherein the locking member has a plurality of wedge portions in a front-back direction of a pipe axis of the fluid pipe, and is equipped with a projection portion that regulates biting of a front wedge portion of the plurality of wedge portions into the fluid pipe, when the fluid pipe moves to a separation side in the pipe axis direction.