申请人:Ciba-Geigy Corporation
公开号:US04816590A1
公开(公告)日:1989-03-28
The invention relates to pyrazoline compounds of formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 and R.sub.3 are each independently of the other methyl, ethyl or hydroxyethyl, R.sub.4 is hydrogen or chlorine, R.sub.5 and R.sub.6 are each independently of the other hydrogen or methyl, R.sub.7 is hydrogen, methyl or phenyl, n is 0 or 1, with the proviso that, if n is 0 and R.sub.4 to R.sub.7 are hydrogen, R.sub.2 is methyl and R.sub.3 is hydroxyethyl, and X.sup..crclbar. is a C.sub.1 -C.sub.3 alkanoate, C.sub.1 -C.sub.4 alkanephosphonate, C.sub.1 -C.sub.4 alkanesulfonate, phosphite, sulfamate or glycolate anion and, if R.sub.1 is methyl, X.sup..crclbar. is also a methosulfate, chloride or bromide ion, to the preparation of said compounds, to the use thereof as fluorescent whitening agents, and to novel hydrazine intermediates of formula ##STR2## wherein R.sub.2 and R.sub.3 are methyl, ethyl or hydroxyethyl, and the acetone hydrazones and salts thereof.
本发明涉及一种
吡唑啉化合物,其
化学式为##STR1##
其中R.sub.1为氢或甲基,R.sub.2和R.sub.3各自独立地为甲基、乙基或羟乙基,R.sub.4为氢或
氯,R.sub.5和R.sub.6各自独立地为氢或甲基,R.sub.7为氢、甲基或苯基,n为0或1,但是,如果n为0且R.sub.4至R.sub.7为氢,R.sub.2为甲基,R.sub.3为羟乙基,且X.sup..crclbar.为C.sub.1-C.sub.3烷基酸盐、C.sub.1-C.sub.4烷基
膦酸盐、C.sub.1-C.sub.4烷
磺酸盐、
亚磷酸酯、磺酰胺酯或甘酸盐阴离子,如果R.sub.1为甲基,则X.sup..crclbar.也是
甲磺酸盐、
氯化物或
溴化物离子,本发明还涉及所述化合物的制备方法、其作为
荧光增白剂的用途以及
化学式为##STR2##
其中R.sub.2和R.sub.3为甲基、乙基或羟乙基的新型腙类中间体和其
醇类盐。