公开(公告)号：US3900419A

公开(公告)日：1975-08-19

申请号：US37928873

申请日：1973-07-16

Applicant: CIBA GEIGY CORP

Inventor： SCHLAPFER HANS ,  KABAS GUGLIELMO

IPC: C07D307/84 ,  C07D307/85 ,  C07D307/91 ,  C07D307/92 ,  D06L3/12

CPC classification number: C07D307/91 ,  C07D307/84 ,  C07D307/85 ,  C07D307/92 ,  D06L4/614

Abstract: 2-Substituted benzofurans which can be further substituted are prepared by known methods. Said compounds are useful as brighteners of high-molecular organic materials.

公开(公告)号：US3660424A

公开(公告)日：1972-05-02

申请号：US3660424D

申请日：1969-06-16

Applicant: CIBA GEIGY CORP

Inventor： KABAS GUGLIELMO ,  ZWEIDLER REINHARD

IPC: C08G63/685 ,  C08K5/3442 ,  C08K5/3445 ,  C08L67/02 ,  C07D49/18

CPC classification number: C08K5/3445 ,  C08G63/6854 ,  C08K5/3442 ,  C08L67/02 ,  C08L2666/70

Abstract: 3 - PHENYL - 7 - (4''-CHLOROPYRAZOLYL-(1''))-COUMARINS WHICH BEAR FURTHER SUBSTITUENTS ESPECIALLY AT THE 3''AND 5''-POSITION OF THE PYRAZOLYL NUCLEUS, AND DESCRIBED AS OPTICAL BRIGHTENERS AFFORDING SUPERIOR DEGREE OF WHITENESS AND FLUORESCENCE NUMBER AS WELL AS BETTER FASTNESS TO CHLORITE BLEACHING BATHS ON SUCH SUBSTATES AS POLYESTER AND OTHER POLYMERIC ORGANIC MATERIALS. A PREFERRED COMPOUND IS 3-PHENYL-7-(3''-METHYL-4''-CHLOROPYRAZOLYL-(1'')COUMARIN. A METHOD OF BRIGHTENING POLYMERIC MATERIALS, E.G. FIBERSS ARE FILMS WITH THE WORD COMPOUND AS WELL AS POLYMERIC MATERIALS BRIGHTENED THEREWITH ARE ALSO DISCLOSED.