Preparation of optical brighteners
    32.
    发明授权
    Preparation of optical brighteners 失效
    荧光增白剂的制备

    公开(公告)号:US4380514A

    公开(公告)日:1983-04-19

    申请号:US214227

    申请日:1980-12-08

    申请人: Guenther Seybold

    发明人: Guenther Seybold

    CPC分类号: C07C255/00 D06L3/125

    摘要: A process for the preparation of unsymmetrically substituted optical brighteners of the general formula ##STR1## where X and Y independently of one another are hydrogen, fluorine, chlorine, cyano, C.sub.1 -C.sub.10 -alkoxycarbonyl, unsubstituted or substituted carbamyl or sulfamyl, a sulfonic acid aryl ester group, C.sub.1 -C.sub.10 -alkylsulfonyl or phenylsulfonyl, and at least one of X and Y is not hydrogen, and of mixtures of such optical brighteners, wherein terephthalaldehyde is reacted successively with a compound of the general formula IIa ##STR2## and a compound of the general formula IIb ##STR3## where X and Y have the above meanings and alkyl is preferably C.sub.1 -C.sub.4 -alkyl, in the presence of an alkali, in a solvent from which the monocondensation product precipitates.

    摘要翻译: 制备通式“I”的不对称取代的荧光增白剂的方法,其中X和Y彼此独立地是氢,氟,氯,氰基,C 1 -C 10 - 烷氧基羰基,未取代或取代的氨甲酰基或磺酰胺基,磺酸基 酸式芳基酯基,C 1 -C 10 - 烷基磺酰基或苯基磺酰基,并且X和Y中的至少一个不是氢,以及这些荧光增白剂的混合物,其中对苯二甲醛依次与通式IIa化合物IIa 和具有上述含义的通式IIb的化合物,其中X和Y具有上述含义,并且烷基优选为C1-C4烷基,在碱的存在下,在单链体产物沉淀的溶剂中。

    Azo dyes containing a thiazole component
    33.
    发明授权
    Azo dyes containing a thiazole component 失效
    含有噻唑成分的偶氮染料

    公开(公告)号:US4207233A

    公开(公告)日:1980-06-10

    申请号:US827340

    申请日:1977-08-24

    摘要: Azo dyes of the formula ##STR1## where A is a radical of a diazo component, B is a radical of a coupling component and R is hydrogen, halogen, a substituted or unsubstituted hydrocarbon radical, substituted or unsubstituted alkoxy or aroxy, or substituted amino. The dyes are eminently suitable for dyeing polyester and particularly for cellulose and blends of cellulose with polyesters.

    摘要翻译: 其中A是重氮组分的基团的偶氮染料,B是偶合组分的基团,R是氢,卤素,取代或未取代的烃基,取代或未取代的烷氧基或羟基或取代的氨基 。 这些染料特别适用于染色聚酯,特别是纤维素和纤维素与聚酯的共混物。