A composition including a fluorine-containing polymer, at least one carboxylic acid compound selected from a dicarboxylic acid compound having a specific structure and a monocarboxylic acid compound having a specific structure; and at least one cross-linking compounding agent selected from a primary amine compound, a secondary amine compound, an inorganic nitride, an organic tin compound, a peroxide cross-linking agent, a polyol cross-linking agent, a polyamine cross-linking agent, an oxazole cross-linking agent, an imidazole cross-linking agent, and a thiazole cross-linking agent. Also disclosed is a molded article obtained from the composition.

A composition contains ethylenically unsaturated quaternary ammonium cations with acetate counterions, where each of the ethylenically unsaturated ammonium cations contain only one non-aromatic carbon-carbon double bond and the composition contains less than one mole-percent chloride relative to quaternary ammonium cations can be polymerized to form a cationic polymer acetate.

The present invention provides a carboxyl group-containing copolymer having a better calcium ion trapping ability and a better carbon black dispersing ability than any conventional carboxyl group-containing copolymers. The present invention relates to a carboxyl group-containing copolymer including a structural unit (a) derived from an unsaturated monocarboxylic acid monomer (A), a structural unit (b) derived from an unsaturated dicarboxylic acid monomer (B), and a structural unit (c) derived from a cationic monomer (C).

The present invention provides a carboxyl group-containing copolymer having a better calcium ion trapping ability and a better carbon black dispersing ability than any conventional carboxyl group-containing copolymers. The present invention relates to a carboxyl group-containing copolymer including a structural unit (a) derived from an unsaturated monocarboxylic acid monomer (A), a structural unit (b) derived from an unsaturated dicarboxylic acid monomer (B), and a structural unit (c) derived from a cationic monomer (C).

The invention relates to a method for treating an aqueous suspension of solid mineral particles arising from the extraction of ores, comprising the following steps: a soluble polymer is prepared in water, comprising: at least one non-ionic monomer, selected from the group consisting of acrylamide; methacrylamide; N-monoderivatives of acrylamide; N-monoderivatives of methacrylamide; N,N-derivatives of acrylamide; N,N-derivatives of methacrylamide; acrylic esters; methacrylic esters; N-vinylformamide; and N-vinylpyrrolidone; at least one anionic monomer representing between 10 and 70 mol %, selected from the group consisting of monomers having a carboxylic functional group and salts thereof; monomers having a sulphonic acid functional group and salts thereof; monomers having a phosphonic acid functional group and salts thereof; at least one cationic monomer representing between 0.2 and 6 mol %, selected from the group consisting of diallyl dimethylammonium chloride, methacrylamidopropyltrimethylammonium chloride and acrylamidopropyltrimethylammonium chloride; adding said soluble polymer into the water having the aqueous suspension of solid particles. This method is particularly useful for treating residues resulting from the extraction of bituminous sand.

The invention relates to a method for treating an aqueous suspension of solid mineral particles arising from the extraction of ores, comprising the following steps: a soluble polymer is prepared in water, comprising: at least one non-ionic monomer, selected from the group consisting of acrylamide; methacrylamide; N-monoderivatives of acrylamide; N-monoderivatives of methacrylamide; N,N-derivatives of acrylamide; N,N-derivatives of methacrylamide; acrylic esters; methacrylic esters; N-vinylformamide; and N-vinylpyrrolidone; at least one anionic monomer representing between 10 and 70 mol %, selected from the group consisting of monomers having a carboxylic functional group and salts thereof; monomers having a sulphonic acid functional group and salts thereof; monomers having a phosphonic acid functional group and salts thereof; at least one cationic monomer representing between 0.2 and 6 mol %, selected from the group consisting of diallyl dimethylammonium chloride, methacrylamidopropyltrimethylammonium chloride and acrylamidopropyltrimethylammonium chloride; adding said soluble polymer into the water having the aqueous suspension of solid particles. This method is particularly useful for treating residues resulting from the extraction of bituminous sand.

The present invention provides a polymer having excellent dye transfer inhibition performance. The present invention relates to a copolymer containing a structural unit (a) derived from a N-vinyl lactam monomer (A) and a structural unit (b) derived from a monomer (B) represented by the following formula (1), (1), or (1). The structural unit (b) is present in a proportion of 1 to 99% by mass based on 100% by mass of all structural units.

##STR00001##

The present invention provides a polymer having excellent dye transfer inhibition performance. The present invention relates to a copolymer containing a structural unit (a) derived from a N-vinyl lactam monomer (A) and a structural unit (b) derived from a monomer (B) represented by the following formula (1), (1), or (1). The structural unit (b) is present in a proportion of 1 to 99% by mass based on 100% by mass of all structural units.

##STR00001##

A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1), the polymer (1) including a polymerized unit derived from a monomer CX.sub.2CY(CZ.sub.2ORf-A), wherein X is the same or different and is H or F; Y is H, F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is H, F, an alkyl group, or a fluoroalkyl group; Rf is a C1-C40 fluorine-containing alkylene group or a CC100 fluorine-containing alkylene group and having an ether bond; and A is COOM, SO.sub.3M, or OSO.sub.3M, wherein M is H, a metal atom, NR.sup.7.sub.4, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R.sup.7 is H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.

A method for producing a fluoropolymer, which includes polymerizing a fluoromonomer in an aqueous medium in the presence of a polymer (1), the polymer (1) including a polymerized unit derived from a monomer CX.sub.2CY(CZ.sub.2ORf-A), wherein X is the same or different and is H or F; Y is H, F, an alkyl group, or a fluorine-containing alkyl group; Z is the same or different and is H, F, an alkyl group, or a fluoroalkyl group; Rf is a C1-C40 fluorine-containing alkylene group or a CC100 fluorine-containing alkylene group and having an ether bond; and A is COOM, SO.sub.3M, or OSO.sub.3M, wherein M is H, a metal atom, NR.sup.7.sub.4, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R.sup.7 is H or an organic group, providing that at least one of X, Y, and Z contains a fluorine atom.