US 2001/0034318 A1 · Chelating agent and detergent comprising the same

Abstract

Disclosed is a biodegradable chelating agent which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, α-alanine, β-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid and a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula [1]: 1 wherein R1 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-10 carbon atoms, R2 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, R1 and R2 may form a ring together, the substituent which can be present in R1 and R2 is at least one member selected from the group consisting of —OH, —CO2M and —SO3M where M represents hydrogen or an alkali metal; X represents 2 where R3 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, the substituent is at least one member selected from the group consisting of —OH, —CO2M and —SO3M, R4 represents at least one member selected from the group consisting of hydrogen, —CO2M and —SO3M, A1 and A2 each represent at least one member selected from the group consisting of hydrogen, CO2M and SO3M, A5 represents an alkylene group of 1-8 carbon atoms which may be of straight chain or branched chain or may form a ring, the alkylene group may contain in the chain an ether bond —O—, an ester bond —COO— or an amide bond —CONH—, M represents hydrogen or an alkali metal, and n represents an integer of 1-8; and Y represents at least one member selected from the group consisting of hydrogen, CO2M and SO3M.

Claims17

Dependent claims

A chelating agent which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, α-alanine, β-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid, a synthetic intermediate amino acid and a salt thereof in an amount of 8% by weight or less based on the compound of the formula [1]:

8
wherein R1 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-10 carbon atoms, R2 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, with a proviso that R1 and R2 may form a ring together, the substituent which can be present in R1 and R2 is at least one member selected from the group consisting of —OH, —CO2M and —SO3M where M represents hydrogen or an alkali metal;
X represents
9
where R3represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, the substituent is at least one member selected from the group consisting of —OH, —CO2M and —SO3M, R4 represents at least one member selected from the group consisting of hydrogen, —CO2M and —SO3M, A1 and A2 each represent at least one member selected from the group consisting of hydrogen, CO2M and SO3M, A5 represents an alkylene group of 1-8 carbon atoms which may be of straight chain or branched chain or may form a ring, the alkylene group may contain in the chain an ether bond —O—, an ester bond —COO— or an amide bond —CONH—, M represents hydrogen or an alkali metal, and n represents an integer of 1-8;
and Y represents at least one member selected from the group consisting of hydrogen, CO2M and SO3M.

3 more elements

A chelating agent in the form of aqueous solution or slurry which comprises a compound of the following formula [1] and at least one compound selected from the group consisting of aspartic acid, maleic acid, acrylic acid, malic acid, glycine, glycolic acid, iminodiacetic acid, nitrilotriacetic acid, α-alanine, β-alanine, iminodipropionic acid, fumaric acid, a synthetic starting amino acid, a synthetic intermediate amino acid and a salt thereof in an amount of 25% by weight or less in total based on the compound of the formula [1]:

10
wherein R1 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-10 carbon atoms, R2 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, with a proviso that R1 and R2 may form a ring together, the substituent which can be present in R1 and R2 is at least one member selected from the group consisting of —OH, —CO2M and —SO3M where M represents hydrogen or an alkali metal;
X represents
11
where R3 represents hydrogen or an unsubstituted or substituted hydrocarbon group of 1-8 carbon atoms, the substituent is at least one member selected from the group consisting of —OH, —CO2M and —SO3M, R4 represents at least one member selected from the group consisting of hydrogen, —CO2M and —SO3M, A1 and A2 each represent at least one member selected from the group consisting of hydrogen, CO2M and SO3M, A5 represents an alkylene group of 1-8 carbon atoms which may be of straight chain or branched chain or may form a ring, the alkylene group may contain in the chain an ether bond —O—, an ester bond —COO— or an amide bond —CONH—, M represents hydrogen or an alkali metal, and n represents an integer of 1-8;
and Y represents at least one member selected from the group consisting of hydrogen, CO2M and SO3M.

3 more elements

Dependencies are inferred from the claim text.

Chelating agent and detergent comprising the same

Life of this patent

Chelating agent and detergent comprising the same

Life of this patent

Abstract

Claims17