Carboxamide derivative, processes for producing the same, and detergent composition
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Abstract
To provide: a carboxamide derivative having reduced content of amide ester; a method for producing thereof; and a detergent composition containing the carboxamide derivative and having excellent low-temperature stability. One method for producing a carboxamide derivative is to react carboxamide, produced with a manufacturing method of carboxamide including 0.02% by weight to 0.18% by weight of amide ester, with hydrogen peroxide, wherein the method includes a carboxamide synthesis process to synthesize carboxamide by reacting diamine with fatty acid ester at a molar rate of 1.20 to 1.60. Another method for producing a carboxamide derivative is to react the carboxamide with monohaloalkylcarboxylic acid or a salt thereof. A carboxamide derivative is produced by the method for producing a carboxamide derivative. A detergent composition includes the carboxamide derivative. The carboxamide derivative is preferably amidoamine oxide or amide betaine.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. A method for producing carboxamide comprising a process for synthesizing carboxamide, wherein the carboxamide is synthesized by reacting, under no presence of a catalyst, a fatty acid ester represented by General Formula (1) below with a diamine represented by General Formula (2) below at a molar ratio of the diamine to the fatty acid ester of 1.20 to 1.60;
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the carboxamide comprises 0.02% by mass to 0.18% by mass of amide ester represented by General Formula (3) below;
R1—
COOR2
General Formula (1)wherein, in General Formula (1) above, R1 represents any one of a straight-chain or branched-chain alkyl group, alkenyl group and hydroxyalkyl group having a carbon number of five to 12; and
R2 represents a straight-chain or branched-chain alkyl group having a carbon number of one to four;
wherein, in General Formula (2) above, R3 and R4 are the same or different and represent an alkyl group having a carbon number of one to four; and
n represents an integer of two to four; and
wherein, in General Formula (3) above, R1 and R5 represent any one of a straight-chain or branched-chain alkyl group, alkenyl group and hydroxyalkyl group having a carbon number of five to 23; and
n represents an integer of two to four. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification