A composition containing a novel vinyl-group-containing compound. This composition contains a vinyl-group-containing compound represented by general formula (1). In the formula: W.sup.1 and W.sup.2 represent a group represented by general formula (2) (where a ring (Z) is an aromatic hydrocarbon ring, X is a single bond or S, R.sup.1 is a single bond or a C1-4 alkylene group, R.sup.2 is a specific substituent group such as a monovalent hydrocarbon, and m is an integer equal to 0 or higher), a group represented by general formula (4) (where the ring (Z), X, R.sup.1, R.sup.2, and m are as previously stated), a hydroxyl group, or a (meth)acryloyloxy group; rings (Y.sup.1, Y.sup.2) are aromatic hydrocarbon rings; R represents a single bond or a specific divalent group; R.sup.3a and R.sup.3b represent a cyano group, a halogen atom, or a monovalent hydrocarbon group; and n1 and n2 are integers of 0-4. ##STR00001##

A method for producing a fluorosulfonyl group-containing compound to obtain a compound represented by the following formula 5 from a compound represented by the following formula 1 as a starting material and a method for producing a fluorosulfonyl group-containing monomer in which the fluorosulfonyl group-containing compound is used: ##STR00001##
wherein R.sup.1 and R.sup.2 are a C.sub.1-3 alkylene group, and R.sup.F1 and R.sup.F2 are a C.sub.1-3 perfluoroalkylene group.

A method for producing a fluorosulfonyl group-containing compound to obtain a compound represented by the following formula 5 from a compound represented by the following formula 1 as a starting material and a method for producing a fluorosulfonyl group-containing monomer in which the fluorosulfonyl group-containing compound is used: ##STR00001##
wherein R.sup.1 and R.sup.2 are a C.sub.1-3 alkylene group, and R.sup.F1 and R.sup.F2 are a C.sub.1-3 perfluoroalkylene group.

A polymer compound for a conductive polymer including one or more repeating units a shown by the following general formula (1), and having a weight-average molecular weight in the range of 1,000 to 500,000, ##STR00001##
wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents any of a single bond, an ester group, and a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group; R.sup.3 represents a linear or branched alkyl group having 1 to 4 carbon atoms with one or more hydrogen atoms in R.sup.3 being substituted by a fluorine atom(s); Z represents any of a single bond, a phenylene group, a naphthylene group, an ether group, and an ester group; and a is a number satisfying 0<a1.0.

A multi-acid polymer has a multi-acid monomer with the following formula:

##STR00001##

wherein R is one or more units of a non-SOF.sub.2 or non-SO.sub.2Cl portion of a polymer precursor in sulfonyl fluoride or sulfonyl chloride form. Another multi-acid polymer has a multi-acid monomer with the following formula:

##STR00002##

wherein R is one or more units of a non-SOF.sub.2 or non-SO.sub.2Cl portion of a polymer precursor in sulfonyl fluoride or sulfonyl chloride form.

A method of making a multi-acid polymer comprising: reacting a polymer precursor in sulfonyl fluoride or sulfonyl chloride form with anhydrous ammonia to obtain a sulfonamide, wherein the polymer precursor in sulfonyl fluoride or sulfonyl chloride form has a formula RSO.sub.2F or RSO.sub.2Cl, respectively, with R being one of more units of the polymer precursor without sulfonyl fluoride or sulfonyl chloride, and wherein the sulfonamide has a formula RSO.sub.2NH.sub.2; and reacting the sulfonamide with a compound of a formula COOHX-AGG under a mild base condition, wherein X is one of C.sub.6H.sub.3 or N(CH.sub.2).sub.3 and AGG is an acid giving group, to form the multi-acid polymer having an imide base and more than two proton conducting groups.

A polymer compound for a conductive polymer including one or more repeating units a shown by the following general formula (1), and having a weight-average molecular weight in the range of 1,000 to 500,000,

##STR00001##

wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents any of a single bond, an ester group, and a linear, branched, or cyclic hydrocarbon group having 1 to 12 carbon atoms and optionally containing either or both of an ether group and an ester group; R.sup.3 represents a linear or branched alkyl group having 1 to 4 carbon atoms with one or more hydrogen atoms in R.sup.3 being substituted by a fluorine atom(s); Z represents any of a single bond, a phenylene group, a naphthylene group, an ether group, and an ester group; and a is a number satisfying 0<a1.0.

Disclosed herein are a reactive emulsifier-containing composition, including: a reactive emulsifier represented by the following general formula (1); and water, wherein a content of the reactive emulsifier represented by the general formula (1) in the reactive emulsifier-containing composition is from 60 mass % to 98 mass %, and a method of storing the reactive emulsifier:

##STR00001##

where R represents a hydrocarbon group having 8 to 20 carbon atoms, n represents a number from 5 to 50, and M represents a hydrogen atom, an alkali metal atom, or an ammonium group.

Disclosed herein are a reactive emulsifier-containing composition, including: a reactive emulsifier represented by the following general formula (1); and water, wherein a content of the reactive emulsifier represented by the general formula (1) in the reactive emulsifier-containing composition is from 60 mass % to 98 mass %, and a method of storing the reactive emulsifier:

##STR00001##

where R represents a hydrocarbon group having 8 to 20 carbon atoms, n represents a number from 5 to 50, and M represents a hydrogen atom, an alkali metal atom, or an ammonium group.