| abstract |
THE PRESENT INVENTION RELATES TO NEW COMPOUNDS OF THE FORMULA 2-B2,6-(B1-CH=CH-),B1-BENZOXAZOLE IN WHICH A1 REPRESENTS A HYDROGEN ATOM, A METHYL GROUP OR A HALOGEN ATOM, B1 DENOTES A RESIDUE OF THE SERIES PHENYL, DIPHENYL, 1-NAPHTHYL OR 2-NAPHTHYL AND B2 REPRESENTS A RESIDUE OF THE SERIES PHENYL, DIPHENYL, STYRYL, STILBENYL, P-PHENYL-STILBENYL, 1-NAPHTHYL OR 2-NAPHTHYL, AND IN WHICH TERMINAL PHENYL AND NAPHTHYL RESIDUES MAY CONTAIN ALKYL, LHALOGEN OR ALKOXY GROUPS. THESE NEW COMPOUNDS REPRESENT VALUABLE OPTICAL BRIGHTENING AGENTS. |