Detoxification of quaternary onium compounds with polycarboxylate-containing compound
First Claim
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1. A method of reducing the toxicity of at least one onium compound in an aqueous solution comprising adding thereto an amount of a polymer selected from the group consisting of nonionic polymers, copolymers and terpolymers;
- anionic polymers, copolymers, and terpolymers and mixtures thereof, sufficient to reduce the toxicity of the onium compound, where the treated onium compound remains in the aqueous solution.
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Abstract
A method for reducing the toxicity of onium compounds, such as ammonium compounds and phosphonium compounds, by the addition of an anionic polymer is described. Suitable anionic polymers include, but are not necessarily limited to, polycarboxylic acids, polysulfonic acids, polyphosphoric acids, polyphosphonic acids, and mixtures thereof.
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Citations
16 Claims
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1. A method of reducing the toxicity of at least one onium compound in an aqueous solution comprising adding thereto an amount of a polymer selected from the group consisting of nonionic polymers, copolymers and terpolymers;
- anionic polymers, copolymers, and terpolymers and mixtures thereof, sufficient to reduce the toxicity of the onium compound, where the treated onium compound remains in the aqueous solution.
- View Dependent Claims (2, 3, 4, 5)
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6. A method of reducing the toxicity of at least one onium compound in an aqueous solution comprising adding thereto an amount of an anionic polymer sufficient to reduce the toxicity of the onium compound,
where the treated onium compound remains in the aqueous solution; -
where the anionic polymer is selected from the group consisting of a homopolymer, copolymer and terpolymer formed from monomers selected from the group consisting of carboxylic acids, sulfonic acids, phosphoric acids, phosphonic acids, salts thereof, and mixtures thereof; and
where the onium compound has a structure of the following formula having a cation and an anion Y−
;
wherein R1 and R2 each are independently selected from normal or branched alkyls containing a chain of at least 4 carbon atoms, with or without one or more substituents, or one or more heteroatoms;
R3 is an organic moiety containing a chain of at least 4 carbon atoms, with or without one or more substituents, or one or more heteroatoms;
X is S, N—
R4 or P—
R4;
R4, if present, is selected from H or an alkyl, aryl, alkylaryl, alkenylaryl or alkenyl group, preferably those having from about 1 to about 20 carbon atoms, with or without one or more substituents, or one or more heteroatoms; and
Y−
is selected from the group consisting of hydroxide ion (OH−
), halide ions, carboxylate ions, sulfate ion, organic sulfonate ions, and mixtures thereof. - View Dependent Claims (7, 8)
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9. An aqueous solution comprising:
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water;
at least one onium compound; and
a polymer selected from the group consisting of nonionic polymers, copolymers and terpolymers;
anionic polymers, copolymers, and terpolymers and mixtures thereof,where the amount of polymer is sufficient to reduce the toxicity of the aqueous solution as compared with an identical aqueous solution having an absence of the polymer. - View Dependent Claims (10, 11, 12, 13)
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14. An aqueous solution comprising:
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water;
at least one onium compound having a structure of the following formula having a cation and an anion Y−
;
wherein R1 and R2 each are independently selected from normal or branched alkyls containing a chain of at least 4 carbon atoms, with or without one or more substituents, or one or more heteroatoms;
R3 is an organic moiety containing a chain of at least 4 carbon atoms, with or without one or more substituents, or one or more heteroatoms;
X is S, N—
R4or P—
R4;
R4, if present, is selected from H or an alkyl, aryl, alkylaryl, alkenylaryl or alkenyl group, preferably those having from about 1 to about 20 carbon atoms, with or without one or more substituents, or one or more heteroatoms; and
Y−
is selected from the group consisting of hydroxide ion (OH−
), halide ions, carboxylate ions, sulfate ion, organic sulfonate ions, and mixtures thereof; and
an anionic polymer is selected from the group consisting of a homopolymer, copolymer and terpolymer formed from monomers selected from the group consisting of carboxylic acids, sulfonic acids, phosphoric acids, phosphonic acids, salts thereof, and mixtures thereof, where the amount of anionic polymer is sufficient to reduce the toxicity of the aqueous solution as compared with an identical aqueous solution having an absence of the anionic polymer. - View Dependent Claims (15, 16)
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Specification