申请人:American Cyanamid Company
公开号:US04081436A1
公开(公告)日:1978-03-28
Certain solid dye bases which are precursors of acrylic fiber dyes and which contain a tertiary nitrogen atom are effectively quaternized in high yield and purity in a "dry state" quaternization process comprising contacting the dye base with an essentially stoichiometric amount of an alkylating agent at a temperature of 30.degree.-90.degree. C., said alkylating agent being added to said dye base gradually at a rate such that the reaction mixture is a free-flowing solid throughout the reaction.
某些含有三级氮原子的固体染料碱是丙烯酸纤维染料的前体,可以在“干态”季铵化过程中高效地以高收率和纯度季铵化,该过程包括将染料碱与基本配比的烷基化剂在30℃-90℃的温度下接触,所述烷基化剂逐渐添加到所述染料碱中,速率使反应混合物在反应过程中成为自由流动的固体。