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    Optical brighteners of the benzoxazole series
    4.
    发明授权
    Optical brighteners of the benzoxazole series 失效
    苯并唑系列的光学增亮剂

    公开(公告)号：US3674781A

    公开(公告)日：1972-07-04

    申请号：US3674781D

    申请日：1970-09-15

    Applicant: HOECHST AG

    Inventor： SCHINZEL ERICH ,  PINTSCHOVIUS ULRICH ,  LEBKUCHER KARL HEINZ

    IPC: C07D263/56 ,  C07D85/48 ,  C09B23/14

    CPC classification number: C07D263/56

    Abstract: Colorless or nearly colorless fluorescent benzoxazole compounds which correspond to the general formula

    MAY BE USED AS OPTICAL BRIGHTENERS. In the above formula I, the radical R represents hydrogen, alkyl of one to four carbon atoms, cyclohexyl, halo lower alkyl, hydroxyethyl, lower alkoxy lower alkyl, di-(lower alkyl)-amino lower alkyl, tri-(lower alkyl)amonium lower alkyl, phenyl and phenyl lower alkyl, and R1 stands for hydrogen, lower alkyl or halogen, R2 stands for lower alkyl.

    Cationic derivatives of 4,4' - bis-(s-triazinylamino)-stilbene -2,2'-disulfonic acid,process for the preparation thereof and application as optical brighteners
    5.
    发明授权
    Cationic derivatives of 4,4' - bis-(s-triazinylamino)-stilbene -2,2'-disulfonic acid,process for the preparation thereof and application as optical brighteners 失效
    4,4' - 双（S-三嗪酰胺）-STILBENE -2,2'-二磺酸的阳离子衍生物，其制备方法和应用于光学增亮剂

    公开(公告)号：US3663538A

    公开(公告)日：1972-05-16

    申请号：US3663538D

    申请日：1969-07-07

    Applicant: HOECHST AG

    Inventor： LEBKUCHER KARL HEINZ ,  NISCHWITZ EHRENFRIED ,  SCHINZEL ERICH

    IPC: C07D251/68 ,  C11D1/00 ,  D06L3/12 ,  C07D55/22

    CPC classification number: C07D251/68 ,  C11D1/00 ,  D06L4/60

    Abstract: CATIONIC COMPOUNDS OF THE 4,4'' - BIS (S - TRIAZINYLAMINO) - SILBENE - 2,2'' / DISULFONIC ACID SERIES ARE USEFUL AS OPTICAL BRIGHTENERS FOR FIBROUS MATERIALS, ESPECIALLY CELLULOSE MATERIALS. THESE BRIGHTENERS ARE COMPATIBLE WITH CATIONIC AUXILIARIES AND OPERATIVE WHEN WORKING AT LOW PH VALUES AND THUS CAPABLE OF APPLICATION TOGETHER WITH CATION-ACTIVE LAUNDRY REFINING AGENTS OR CREASE-RESISTANT FINISHING AGENTS. THEY ARE, FURTHERMORE, USEFUL FOR BRIGHTENING PAPER PULPS OR PAPER COATINGS.

    Abstract translation: cpds。 具有以下通式：（其中a和A1是相同或不同的C2-8烃残基，由非发色团残基选择，R1和R2与不同的C1-5低级烷基或H原子相同，R3- R6是相同或不同的C1-5低级烷基，R3-R4和R5-R6可以与N原子形成氢化杂环，或者它们是环烷基，芳烷基或芳基，R7和R8相同或不同 C 1-5低级烷基或苄基或H原子，X为无色阴离子）。 它们通过使1摩尔4,41-二氨基 - 二苯乙烯 - 二磺酸-2,21和2摩尔氰尿酰氯与2摩尔通式的二胺的缩合产物反应来制备：将产物与下式的二胺缩合：将 产品与cpd。 R7X（其中X是阴离子残基），并使沉淀的产物与cpd反应。 R8X。 产品特别。 用于处理纤维素丝。

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