A porous membrane includes a modacrylic copolymer. The modacrylic copolymer includes, with respect to 100 parts by mass of all structural units constituting the modacrylic copolymer, 15 to 85 parts by mass of a structural unit derived from acrylonitrile, 15 to 85 parts by mass of a structural unit derived from at least one halogen-containing monomer selected from the group consisting of vinyl halide and vinylidene halide, and 0 to 10 parts by mass of a structural unit derived from a vinyl monomer having an ionic substituent. The porous membrane can be produced by preparing a modacrylic copolymer solution by dissolving the modacrylic copolymer in a solvent, and bringing the modacrylic copolymer solution into contact with a non-solvent for the modacrylic copolymer such that the modacrylic copolymer solution is solidified.

The present invention pertains to a resin composition which includes component: a membrane-forming polymer, component: a polymer obtained by polymerizing a monomer composition which includes a (meth)acrylic ester macromonomer represented by general formula and another monomer, and component: a polymer including a vinylpyrrolidone unit, a membrane-forming stock solution which includes the resin composition, a porous membrane obtained by forming with the membrane-forming stock solution, and a hollow fiber membrane, a water treatment device, an electrolyte support, and a separator which use the porous membrane. According to the present invention, it is possible to provide a porous membrane which has pores with high uniformity wherein the formation of large pores with a diameter of 1 m or higher is suppressed and which has excellent fractionation performance and high water permeability, and a hollow fiber membrane, water treatment device, electrolyte support, and separator which use the porous membrane.

Vibration damping and sound absorbing foam formed of foam and fine particles present inside the foam so as to form bell-like structures in the foam is produced by performing the following steps [I] to [III] in the stated order. [I] Producing fine particles each having a surface coated with a coating material capable of being dissolved in at least one liquid selected from water and a solvent. [II] Mixing the coated fine particles into a material for foam, and producing foam from the mixture. [III] Immersing the foam in at least one liquid selected from water and a solvent to remove the coating of each of the fine particles in the foam by dissolution in the liquid.

A composition comprising a fiber component having a melt/softening temperature and a matrix material for mixing with the fiber component, wherein the composition experiences a vertical rise of at least about 0.5 mm in the absence of any blowing agent when exposed to an elevated temperature of at least about 70 C.

Provided is a low-dielectric porous polymer film having a low dielectric constant at high millimeter-wave frequencies and thereby useful as a sheet for a millimeter-wave antenna. The low-dielectric porous polymer film is made of a polymer material and formed with fine pores dispersed therein, wherein the film has a porosity of 60% or more, and the pores have an average pore diameter of 10 m or less.

Biochemical carriers are provided. Each of the biochemical carriers includes: biochemical molecules having a sequence into which digital data information is encoded; a carrier particle composed of a polymer matrix and in which the biochemical molecules are connected to the surface or inside of the polymer matrix; and an index code introduced into the carrier particle. Also provided is a method for fabricating biochemical carriers. The fabrication method includes: encoding digital data into a sequence of biochemical molecules; synthesizing the biochemical molecules based on the encoded sequence; mixing the biochemical molecules with a photocurable material; curing the mixture to obtain carrier particles including a polymer matrix; and introducing an index code into the carrier particles simultaneously with or separately from the curing. Also provided is a method for restoring digital data from the biochemical carrier. The restoration method includes: analyzing the index code of the biochemical carrier; reacquiring the biochemical molecules from the biochemical carrier based on the analytical results of the index code; sequencing the biochemical molecules; and decoding the sequencing results to restore digital data.

A method of manufacturing a flexible intrinsically antimicrobial absorbent porosic composite controlling for an effective pore size using removable pore-forming substances and physically incorporated, non-leaching antimicrobials. A flexible intrinsically antimicrobial absorbent porosic composite controlled for an effective pore size composited physically incorporated, high-surface area, non-leaching antimicrobials, optionally in which the physically incorporated non-leaching antimicrobial exposes nanopillars on its surface to enhance antimicrobial activity. A kit that enhances the effectiveness of the intrinsically antimicrobial absorbent porosic composite by storing the composite within an antimicrobial container.

A polyimide precursor solution includes an aqueous solution that contains water; a resin particle that does not dissolve in the aqueous solution; an inorganic particle; and a polyimide precursor.

A polyimide precursor solution includes an aqueous solution that contains water; a resin particle that does not dissolve in the aqueous solution; inorganic particles that have a volume average particle diameter within a range of 0.001 m to 0.2 m; and a polyimide precursor.

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), ##STR00001## (in the formula (I), A represents a tetravalent organic group, and B represents a divalent organic group represented by any of the following formulas (B1) to (B4)), ##STR00002## (in the formulas (B1) to (B4), Ar.sup.1, Ar.sup.10, and Ar.sup.11 each independently represent a trivalent aromatic group which may have a substituent, Ar.sup.2, Ar.sup.4, Ar.sup.5, Ar.sup.7 and Ar.sup.8 each independently represent a divalent aromatic group which may have a substituent, Ar.sup.3 and Ar.sup.6 each independently represent a tetravalent aromatic group which may have a substituent or a group represented by the following formula (II), Ar.sup.9 represents a divalent aromatic group which may have a substituent or a group represented by the following formula (III), X.sup.1 to X.sup.7 each independently represent NRa, O, or S, Ra represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group, and * represents a bonding site with an adjacent linking group), and ##STR00003## (in the formulas (II) and (III), Ar.sup.12 and Ar.sup.13 each independently represent a trivalent aromatic group which may have a substituent, Ar.sup.14 and Ar.sup.15 each independently represent a divalent aromatic group which may have a substituent, Y and Z each independently represent O, S, S(?O).sub.2, or CRbRc, Rb and Rc each independently represent a hydrogen atom, an alkyl group which may have a substituent, or an aryl group, and * represents a bonding site with an adjacent linking group), Condition (1): a total content of the groups represented by the formulas (B1) to (B4) is 1% by mass or more and 40% by mass or less with respect to a total amount of the polyimide precursor, and Condition (2): a content of the particles is 5% by mass or more and 90% by mass or less with respect to a total content of the polyimide precursor and the particles.