| 摘要 |
<p>Flair treating compositions contain one or more polycondensable compds. of formula (I). X = O, S or NH; R1 and R2 = lower alkyl, or together with the N atom from a heterocyclic group; and R3 = H or alkyl, while two groups R3 can be combined in a heterocyclic group. (I) is pref. monomorpholinomethylured, dimonpholinomethylurea, dimorpholinomethylthiourea, monomorpholinomethylthiourea, monoomorphalinomethylethyleneurea, 1,4-bis (carbamidomethyl)-piperazine, diethylaminomethylurea, monomonpholinomethylethylene diurea, dimorpholinomethylethylenediurea, or piperidinomethylurea. The tamino group of cpd. (I) can be quarternised, e.g. with methyl iodide. The group of formula (I) is pref. fixed to a group with co-reactivity, such as a sulphur-sulphur linkage, a third group, a carboxyl group, a basic or quat. ammonium group, or a fatty chain. Use of the cpds. (I) prevents hair from undergoing deterioration when contacted with sea water, permanent waving or bleaching. Compsn. contng. cmpds. (I) can be used aqueous waving lotions.</p> |
