The present invention provides a composition containing the following components (A)-(C): (A) an alkali metal compound, (B) a polymer having an acidic dissociative group, and (C) a compound having an acidic dissociative group and an amino group, and having β of more than 0.0 and less than 1.0 as calculated by the formula (I): β={amount (mol) of alkali metal in component (A)−amount (mol) of acidic dissociative group in component (B)}/amount (mol) of acidic dissociative group in component (C).

The present invention relates to an antifouling coating composition, an antifouling coating film, a substrate with an antifouling coating film, a antifouling substrate, a method for producing substrate with an antifouling coating film, and a method for preventing substrate from fouling. The antifouling coating composition includes a hydrolyzable polymer (A) including at least one selected from the group consisting of a polymer (A1) having a structural unit represented by the formula (1) below and a polymer (A2) having a structural unit represented by the formula (2) below, a tertiary carboxylic acid component (B) including versatic acid, and an antifouling agent component (C).

##STR00001##

[In the formula (1), M is zinc or copper, and R.sup.1 independently at each occurrence is a hydrogen atom or a methyl group.]

—COO-M-O—COR.sup.2  (2)

[In the formula (2), M is zinc or copper, and R.sup.2 is an organic group.]

Disclosed is an artists' watercolour paint composition comprising, at least one pigment; one or more humectants; a binder selected from one or more alkali soluble polymers; and a pH stabilizer in an amount effective to adjust the mixture to an alkali pH so that the watercolour paint composition is water soluble. Also disclosed are uses of the paint composition in providing watercolour paintings.

Disclosed is an artists' watercolour paint composition comprising, at least one pigment; one or more humectants; a binder selected from one or more alkali soluble polymers; and a pH stabilizer in an amount effective to adjust the mixture to an alkali pH so that the watercolour paint composition is water soluble. Also disclosed are uses of the paint composition in providing watercolour paintings.

A material for slurry composition-use for example is a paste composition including a negative electrode active material that contains a silicon-based negative electrode active material in an amount of at least 30 mass % and a water-soluble polymer in an amount of at least 3 parts by mass and less than 500 parts by mass per 100 parts by mass of the silicon-based negative electrode active material. The water-soluble polymer includes at least 20.0 mass % and no greater than 79.5 mass % of structural units derived from an ethylenically unsaturated carboxylic acid compound (A) and at least 20.0 mass % and no greater than 79.5 mass % of structural units derived from a copolymerizable compound (B) that has an ethylenically unsaturated bond and a water solubility of at least 7 g/100 g at 20° C., and the water-soluble polymer has a degree of swelling in electrolysis solution of less than 120%.

A material for slurry composition-use for example is a paste composition including a negative electrode active material that contains a silicon-based negative electrode active material in an amount of at least 30 mass % and a water-soluble polymer in an amount of at least 3 parts by mass and less than 500 parts by mass per 100 parts by mass of the silicon-based negative electrode active material. The water-soluble polymer includes at least 20.0 mass % and no greater than 79.5 mass % of structural units derived from an ethylenically unsaturated carboxylic acid compound (A) and at least 20.0 mass % and no greater than 79.5 mass % of structural units derived from a copolymerizable compound (B) that has an ethylenically unsaturated bond and a water solubility of at least 7 g/100 g at 20° C., and the water-soluble polymer has a degree of swelling in electrolysis solution of less than 120%.

A coating material for a gas barrier includes polycarboxylic acid, a polyamine compound, a polyvalent metal compound, and a base, in which (molar number of —COO— groups included in the polycarboxylic acid)/(molar number of amino groups included in the polyamine compound)=100/20 to 100/90.

A coating material for a gas barrier includes polycarboxylic acid, a polyamine compound, a polyvalent metal compound, and a base, in which (molar number of —COO— groups included in the polycarboxylic acid)/(molar number of amino groups included in the polyamine compound)=100/20 to 100/90.

A coating material for a gas barrier includes polycarboxylic acid, a polyamine compound, a polyvalent metal compound, and a base, in which (molar number of —COO— groups included in the polycarboxylic acid)/(molar number of amino groups included in the polyamine compound)=100/20 to 100/90.

The invention relates to preserved products which contain 1 to 100 ppm of 5-chloro-2-methyl-4-isothiazolin-3-one with a content of 2-methyl-4-isothiazolin-3-one in the range from 0 to 2 wt. % based on the total amount of 5-chloro-2-methyl-4-isothiazolin-3-one, and to the use of 5-chloro-2-methyl-4-isothiazolin-3-one with a content of 2-methyl-4-isothiazolin-3-one in the range from 0 to 2 wt. % based on the total amount of 5-chloro-2-methyl-4-isothiazolin-3-one, for the preservation of products.