Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Hidekazu Hirose

Katsuhiro Sato

Takeshi Agata

Akira Imai

Koji Horiba

Mieko Seki

Kiyokazu Mashimo

Hirohito Yoneyama

Daisuke Okuda

Toru Ishii

Tomoya Sasaki

Tadayoshi Ozaki

Katsumi Nukada

Wataru Yamada

Kenji Kajiwara

Yuko Iwadate

Yasunobu Kashima

Yohei Nishino

Kosaku Yoshimura

Kazuaki Sato

Yoshihiro Ohba

Hajime Sugahara

Kosuke Nakada

Yoshiyuki Ono

Takeshi Iwanaga

Hiroaki Moriyama

Ryosaku Igarashi

Tomoyo Okubo

Sakae Takeuchi

Hiroyoshi Okuno

Hideaki Yoshikawa

Shigeru Seitoku

Atsushi Sugitate

Hokuto Takada

Takayuki Ito

Yoshihisa Yamazaki

Ryo Sekiguchi

Tatsuki Sano

A polyimide precursor solution contains a polyimide precursor, resin particles having a core and a coating resin layer, the coating resin layer contains a melamine resin, and a solvent.

Polyimide precursor solution and method for producing porous polyimide film

A particle-dispersed polyimide precursor solution contains a polyimide precursor having a unit represented by the following formula (I), particles, and a solvent, in which the particle-dispersed polyimide precursor solution satisfies both the following conditions (1) and (2),

Particle-dispersed polyimide precursor solution, method for producing porous polyimide film, and porous polyimide film

A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecular weight side maximum value in an elution curve obtained by gel permeation chromatography, a weight average molecular weight in the high molecular weight region A is 50,000 or more, a weight average molecular weight in the low molecular weight region B is 10,000 or more and 30,000 or less, and a value of a/(a+b) is 0.60 or more and 0.98 or less in which a represents an area of the high molecular weight region A and b represents an area of the low molecular weight region B.

Polyimide precursor solution, method for producing porous polyimide film, and porous polyimide film

A polyimide precursor solution includes: a polyimide precursor; polyester resin particles containing a polyester resin and having a volume average particle diameter of from 3 &#x3bc;m to 50 &#x3bc;m inclusive and an average circularity of 0.970 or more; and a solvent.

Polyimide precursor solution, method for producing porous polyimide film, porous polyimide film, and insulated wire

A particle-dispersed polyimide precursor solution contains: a polyimide precursor consisting of a polymer of a tetracarboxylic dianhydride and a diamine containing a fluorene-based diamine having a fluorene skeleton; particles; and an aqueous solvent containing water.

A polyimide precursor-containing aqueous composition contains at least one polymer material selected from the group consisting of a water-insoluble fibrous organic substance and a polyalkylene oxide having a viscosity-average molecular weight of 5 million or more, a polyimide precursor, particles, and water.

Polyimide precursor-containing aqueous composition, method for producing polyimide film, and method for producing porous polyimide film

A polyimide precursor solution includes: a polyimide precursor; a resin particle having 55% by weight or more of a structural unit derived from a styrene derivative; and a mixed solvent containing a first organic solvent (S1) and a second organic solvent (S2), wherein the polyimide precursor solution satisfies the following conditions (1) to (4),

There is provided a porous polyimide film in which the pore distribution width A represented by the following formula is 1.15 or less, the average pore diameter is within a range of 0.50 &#x3bc;m to 3.0 &#x3bc;m, and the air permeation speed is 30 seconds or less:=()

Porous polyimide film, lithium ion secondary battery, and all-solid-state battery

A porous polyimide film has plural pores, in which an average flattening of the plural pores is within a range of 0.1 to 0.7, a coefficient of variation of a distance between adjacent pores is within a range of 0.10 to 0.40, and a front surface and aback surface communicate with each other through the plural pores.

Porous polyimide film, secondary battery separator, and secondary battery

An all-solid-state battery includes a positive electrode active material layer containing a positive electrode active material; a negative electrode active material layer containing a negative electrode active material; and a solid electrolyte layer containing a solid electrolyte and a porous polyimide film which holds the solid electrolyte. The porous polyimide film has a void ratio of 60% or more and 80% or less and a pore diameter of 0.1 &#x3bc;m or more and 10 &#x3bc;m or less.

All-solid-state battery

A porous polyimide film has an acid value within a range of 7 mgKOH/g to 20 mgKOH/g determined by acid-base titration, contains a metal group including alkali metals excluding Li, an alkaline earth metals, and silicon at a total content of 100 ppm or less relative to the porous polyimide film, and has a moisture absorption ratio of 0.5% or less.

Porous polyimide film and battery

A porous polyimide shaped article has a thickness in a range from 550 &#x3bc;m to 3,000 &#x3bc;m and has a relative dielectric constant of 1.8 or less and a dielectric loss tangent of 0.01 or less at 1 MHz. The porous polyimide shaped article satisfies the following formula:1.2&#x2264;&#x2264;1.6wherein A represents a square root of a ratio of a pore size Dwhere a cumulative percentage by number of pores from smaller sizes is 84% to a pore size Dwhere the cumulative percentage by number of the pores from smaller sizes is 16% ((D/D)) in a pore size distribution measured by mercury intrusion porosimetry.

Porous polyimide shaped article

A titanium oxide particle surface-treated with a silane compound having a hydrocarbon group has absorption at a wavelength of about 400 nm or more and about 800 nm or less in an ultraviolet-visible absorption spectrum, and has an absorption peak at a wave number of about 2700 cmor more and about 3000 cmor less in an infrared absorption spectrum.

Titanium oxide particle and method for producing the same

A silica particle includes a silica particle body and a titania coating layer formed on a surface of the silica particle body through a reaction of a titanium compound having a structure in which a hydrocarbon group bonds to a titanium atom through an oxygen atom. The silica particle has absorption at a wavelength of about 400 nm or more and about 800 nm or less in an ultraviolet-visible absorption spectrum.

Silica particle comprising a titania coating and method for producing the same

A compound has a structure represented by the following formula (C1): wherein R, R, R, R, R, R, R, R, R, R, R, R, R, R, and Reach independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aralkyl group, an aryl group, a cyano group, a halogen atom, or a group obtained by combining two or more of the above groups, and a combination of Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, or Rand Reach independently may form a ring.

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Kanagawa, Japan

Hidekazu Hirose