Water dispersible polyamides having carboxylic acid groups are disclosed. These are made by reacting polycarboxyl is acids or anhydrides thereof with amine containing monomer or an amide terminated polyamide under reaction conditions such that a few of the carboxylic acid groups are residual and can promote dispersion in water. These polyamides after dispersion can be chain extended to higher molecular weight polymers or can be terminally functionalized with reactive groups such as isocyanate, epoxy, vinyl, acetoacetonate, or silanol groups. Composites and hybrids of these polyamides with vinyl polymers are also disclosed and claimed.

The purpose of the present invention is to provide a composite semipermeable membrane whose water permeability is hard to decline even when exposed to high temperature environment for a long period of time, a spiral wound separation membrane element using the composite semipermeable membrane, and a method for producing the same. Another purpose of the invention is to provide a method for evaluating water permeation performance of a composite semipermeable membrane, which method evaluates whether the water permeability of a composite semipermeable membrane is likely to decline due to heat, by a simple evaluation method. The composite semipermeable membrane having a skin layer that includes a polyamide resin, the skin layer being placed on a porous support and having an elastic modulus of 100 MPa or more, calculated by AFM force curve measurement in water.

The purpose of the present invention is to provide a composite semipermeable membrane whose water permeability is hard to decline even when exposed to high temperature environment for a long period of time, a spiral wound separation membrane element using the composite semipermeable membrane, and a method for producing the same. Another purpose of the invention is to provide a method for evaluating water permeation performance of a composite semipermeable membrane, which method evaluates whether the water permeability of a composite semipermeable membrane is likely to decline due to heat, by a simple evaluation method. The composite semipermeable membrane having a skin layer that includes a polyamide resin, the skin layer being placed on a porous support and having an elastic modulus of 100 MPa or more, calculated by AFM force curve measurement in water.

Provided are a novel polyamide polymer obtained by polymerizing monomers including aromatic diamine substituted with a nitrile group and an amide group and an aromatic dibasic acid compound, a spinning dope comprising the same, and a polyamide molded article. A fiber obtained using the novel polyamide polymer according to the present invention, particularly, a fiber obtained by spinning the polymer according to the present invention may have high strength and high elasticity, such that the fiber may be applied to various industrial fields.

Provided are a polyamide resin composition prepared by blending a polyamide resin (A) and a polyalcohol (B), wherein the proportion of the number of the amide groups to the number of the carbon atoms in the polyamide resin (A) is 0.080 to 0.140 and the blending amount of the polyalcohol (B) is 1 to 10 parts by mass relative to 100 parts by mass of the polyamide resin (A); and a molded article of the resin composition.

The invention aims to provide a photosensitive colored resin composition and a heat resistant colored resin film produced therefrom that has the function of absorbing light in the shorter visible wavelength range with high sensitivity to serve effectively as planarizing film, insulation layer, and barrier rib used in organic luminescence apparatuses and display elements and the function of reducing external light reflection. The photosensitive colored resin composition includes an alkali-soluble resin (a), a photosensitive compound (b), and a compound (c) having an absorption maximum in the wavelength range of 400 nm or more and less than 490 nm, the photosensitive compound (b) containing a photosensitive compound (b1), the photosensitive compound (b1) being such that its maximum absorption wavelength in the range of 350 nm or more and 450 nm or less is located within the wavelength range of 350 nm or more and 390 nm or less.

The invention aims to provide a photosensitive colored resin composition and a heat resistant colored resin film produced therefrom that has the function of absorbing light in the shorter visible wavelength range with high sensitivity to serve effectively as planarizing film, insulation layer, and barrier rib used in organic luminescence apparatuses and display elements and the function of reducing external light reflection. The photosensitive colored resin composition includes an alkali-soluble resin (a), a photosensitive compound (b), and a compound (c) having an absorption maximum in the wavelength range of 400 nm or more and less than 490 nm, the photosensitive compound (b) containing a photosensitive compound (b1), the photosensitive compound (b1) being such that its maximum absorption wavelength in the range of 350 nm or more and 450 nm or less is located within the wavelength range of 350 nm or more and 390 nm or less.

Provided are a polyamide resin with a high melting point and a high glass transition temperature, a polyamide resin composition, and a molded article. The polyamide resin includes diamine-derived structural units and dicarboxylic acid-derived structural units, in which 50 mol % or more of the diamine-derived structural units are structural units derived from p-benzenediethanamine, and 65 mol % or more of the dicarboxylic acid-derived structural units are structural units derived from an aromatic dicarboxylic acid.

Provided are a polyamide resin with a high melting point and a high glass transition temperature, a polyamide resin composition, and a molded article. The polyamide resin includes diamine-derived structural units and dicarboxylic acid-derived structural units, in which 50 mol % or more of the diamine-derived structural units are structural units derived from p-benzenediethanamine, and 65 mol % or more of the dicarboxylic acid-derived structural units are structural units derived from an aromatic dicarboxylic acid.

Biodegradable particles for delivering a nucleic acid encoding gene-editing factors or a nucleic acid associated with a therapeutic protein to a cell, and compositions, methods, systems, and kits for gene editing in vivo or ex vivo or gene therapy for treating retinal eye diseases are disclosed.