A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.

A polymerizable composition for forming an ion-exchange resin precursor, the polymerizable composition containing a monomer component and polyethylene particles in an amount of 50 to 120 parts by mass per 100 parts by mass of the monomer component, wherein the monomer component contains an aromatic monomer for introducing ion-exchange groups and a nitrogen-containing aliphatic monomer, the nitrogen-containing aliphatic monomer being present in an amount of 10 to 35% by mass in said monomer component. An ion-exchange membrane is produced by applying the polymerizable composition onto a polyolefin type filament base material and polymerizing the polymerizable composition to form an ion-exchange resin precursor and, thereafter, introducing ion-exchange groups into the precursor.

A positive electrode includes a composite material including a positive active material and a coating layer on a surface of the positive active material, wherein the coating layer includes a copolymer including a first repeating unit represented by Formula 1 below and a second repeating unit represented by Formula 2 below: ##STR00001## ##STR00002## wherein Ar.sub.1, R.sub.1 to R.sub.6, A, A.sub.1, ##STR00003##
Y.sup.−, m, and n are the same as defined in the specification.

A positive electrode includes a composite material including a positive active material and a coating layer on a surface of the positive active material, wherein the coating layer includes a copolymer including a first repeating unit represented by Formula 1 below and a second repeating unit represented by Formula 2 below: ##STR00001## ##STR00002## wherein Ar.sub.1, R.sub.1 to R.sub.6, A, A.sub.1, ##STR00003##
Y.sup.−, m, and n are the same as defined in the specification.

A cationic copolymer comprises the divalent monomer units: wherein: each Ar.sup.1 independently represents phenylene; each L independently represents a direct bond or wherein each R.sup.1 independently represents an alkyl group having 1 to 4 carbon atoms, and each R.sup.2 independently represents an alkylene group having from 1 to 6 carbon atoms, and each Z.sup.− represents a non-interfering anion; each Ar.sup.2 independently represents an optionally substituted divalent aryl ring, with the proviso that if L represents a direct bond, then Ar.sup.2 represents an optionally substituted cationic divalent aryl ring accompanied by Z; each R.sup.3 independently represents H or an alkyl group having 1 to 6 carbon atoms; and each D independently represents a direct bond or Ar.sup.2, wherein adjacent D and L are not both direct bonds, and wherein if L is a direct bond, then D is Ar.sup.2. The cationic copolymer can be free-radially cured and used in a membrane.

A cationic copolymer comprises the divalent monomer units: wherein: each Ar.sup.1 independently represents phenylene; each L independently represents a direct bond or wherein each R.sup.1 independently represents an alkyl group having 1 to 4 carbon atoms, and each R.sup.2 independently represents an alkylene group having from 1 to 6 carbon atoms, and each Z.sup.− represents a non-interfering anion; each Ar.sup.2 independently represents an optionally substituted divalent aryl ring, with the proviso that if L represents a direct bond, then Ar.sup.2 represents an optionally substituted cationic divalent aryl ring accompanied by Z; each R.sup.3 independently represents H or an alkyl group having 1 to 6 carbon atoms; and each D independently represents a direct bond or Ar.sup.2, wherein adjacent D and L are not both direct bonds, and wherein if L is a direct bond, then D is Ar.sup.2. The cationic copolymer can be free-radially cured and used in a membrane.

A positive electrode includes a composite material including a positive active material and a coating layer on a surface of the positive active material, wherein the coating layer includes a copolymer including a first repeating unit represented by Formula 1 below and a second repeating unit represented by Formula 2 below:

##STR00001##

wherein Ar.sub.1, R.sub.1 to R.sub.6, A, A.sub.1,

##STR00002##

Y.sup.−, m, and n are the same as defined in the specification.

A positive electrode includes a composite material including a positive active material and a coating layer on a surface of the positive active material, wherein the coating layer includes a copolymer including a first repeating unit represented by Formula 1 below and a second repeating unit represented by Formula 2 below:

##STR00001##

wherein Ar.sub.1, R.sub.1 to R.sub.6, A, A.sub.1,

##STR00002##

Y.sup.−, m, and n are the same as defined in the specification.

The object of the invention is to provide a novel olefin-based molded product useful for various applications.

An olefin-based molded product comprising a polymer including a structural unit of at least one polar olefin monomer represented by the general formula (I) CH2=CH—R.sup.2—Z(R.sup.1)n is provided. In the formula, Z is a hetero atom selected from the group consisting of nitrogen, oxygen, phosphorus, sulfur, and selenium; R.sup.1 is a substituted or unsubstituted hydrocarbyl group having 1 to 30 carbon atoms; n is an integer of 1 or 2 depending on the atomic species of Z; and R.sup.2 is a substituted or unsubstituted hydrocarbylene group having 2 to 20 carbon atoms.

The object of the invention is to provide a novel olefin-based molded product useful for various applications.

An olefin-based molded product comprising a polymer including a structural unit of at least one polar olefin monomer represented by the general formula (I) CH2=CH—R.sup.2—Z(R.sup.1)n is provided. In the formula, Z is a hetero atom selected from the group consisting of nitrogen, oxygen, phosphorus, sulfur, and selenium; R.sup.1 is a substituted or unsubstituted hydrocarbyl group having 1 to 30 carbon atoms; n is an integer of 1 or 2 depending on the atomic species of Z; and R.sup.2 is a substituted or unsubstituted hydrocarbylene group having 2 to 20 carbon atoms.