Different softening agents,including N-[(3-8)dimethylamino propyl]octadecanamide,di(palmiticcarboxyethyl)hydroxyethyl methyl ammonium methylsulfate,and polydimethylsiloxane,have been studied to investigate the compatibility in solid softner and the differences in softening effects.The results indicated that N-[(3-8)dimethylamino propyl]octadecanamide and di(palmiticcarboxyethyl)hydroxyethyl methyl ammonium methylsulfate showed better soft performance.Meanwhile,a 5％optimum addition of N-[(3-8)dimethylamino propyl]octadecanamide in solid softner displayed the most effective softening.When N-[(3-8)dimethylamino propyl]octadecanamide,and di(palmiticcarboxyethyl)hydroxyethyl methyl ammonium methylsulfate were added together in solid softner,the softner performance would enhanced,with the mass ratio of 1∶1.Besides,optimized solid softner would not influence the decontamination performance in detergents while washing together.
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