申请人:Sandoz Ltd.
公开号:US04316815A1
公开(公告)日:1982-02-23
The invention relates to stilbene derivatives which are used as optical brightening agents, particularly as anionic brightening agents for polyamide and cellulosic substrates. These stilbene derivatives have the formula I ##STR1## in which both X's are the same and are CR.sub.5 or N, where R.sub.5 is hydrogen, C.sub.1-4 alkyl or phenyl; both Y's are the same and are each one of the radicals of benzofuran, triazole, pyrazole, dibenzofuran or dibenzothiophene and benzothiophene, and R.sub.1 is as defined in the specification.
该发明涉及用作光学增白剂的stilbene衍生物,特别是用作聚酰胺和纤维素基质的阴离子增白剂。这些stilbene衍生物具有以下结构式I:其中两个X相同,分别为CR.sub.5或N,其中R.sub.5为氢、C.sub.1-4烷基或苯基;两个Y相同,分别为苯并呋喃、三唑、吡唑、二苯并呋喃或二苯并噻吩和苯并噻吩的基团之一,R.sub.1如规范中定义。