A refined product of a polyoxypropylene fatty acid isopropanolamide surfactant, having a high stability in storage and a very small change in smell thereof, is obtained by heat-treating an addition-reaction mixture prepared from a compound of the formula (III) and propylene oxide in a molar amount of 0.5 to 10 times that of the compound of the formula (III), and containing the target compound of the formula (I) and an oxazoline compound of the formula (II) produced as a by-product with water or an alkaline aqueous solution at 50 to 100° C., to hydrolyze the oxyazoline compound and to control the content of the oxyazoline compound to 0.1% by mass or less; and a detergent composition containing the refined product in a content of 1 to 50% by mass, exhibits enhanced thickening, foaming, emulsifying, dispersing and dissolving properties.
R
1
—CONH—CH
2
CH(CH
3
) (X)
n
OH (I)
1
R
1
—CONH—CH
2
CH(CH
3
)—OH (III)
[R
1
=C
1
-C
19
alkyl or alkenyl group, X=oxypropylene group, n=average number of addition-reacted X groups of 0.5 to 10]
一种聚氧
丙烯脂肪酸异丙醇酰胺表面活性剂的精制产品,具有很高的贮存稳定性和极小的气味变化,是通过热处理由式(III)化合物和环氧
丙烷制备的加成反应混合物得到的,该混合物的摩尔量是式(III)化合物的 0.5至10倍的式(III)化合物制备的加成反应混合物,其中含有式(I)的目标化合物和作为副产物生成的式(II)的
噁唑啉化合物、使
噁唑啉化合物
水解,并将
噁唑啉化合物的含量控制在 0.1%(以质量计)或更低;含有该精制产品的洗涤剂组合物,其含量为 1 至 50%(以质量计),具有增强的增稠、发泡、乳化、分散和溶解特性。
R
1
-CONH-CH
2
CH(CH
3
) (X)
n
OH (I)
1
R
1
-CONH-CH
2
CH(CH
3
)-OH (III)
[R
1
等于;C
1
-C
19
烷基或烯基,X&等于;氧
丙烯基,n&等于;加成反应的 X 基团的平均数量为 0.5 至 10]