Novel stilbenyl-1, 3, 4-oxdiazole derivs as - optical brightening agents outside textile

摘要

Novel stilbeny-1,3,4-oxdiazole derivs. as optical brightening agents outside textile industry Compds. of general formula: (in which A1 is a phenyl, naphthyl, styryl, stilbenyl, thienyl, 2-benzoxazolyl or 2-naphthoxazolyl; B is phenylene, furylene or thienylene radical; Ax is phenyl or naphthyl opt. substd; R is H, a halogen, or an optionally substituted alkyl, phenyl, carboxyl, sulpho, hydroxyl or amino group; m, n and p are 1 or 2) are fluorescent, heat and light-fast, and do not migrate.