Arylheterocycle substituted dibenzofuranpyran-type photochromic compound and its preparing process and usage

Application Number: 00108073
Application Date: 2000.06.12
Publication Number: 1328109
Publication Date: 2001.12.26
Priority Information:
International: C08J5/18;C09D11/00;C09K9/02
Applicant(s) Name: Inst of Photosensitive Chemistry, Chinese Academy of Sciences
Inventor(s) Name: Fan Meigong;Wei Jingqiang;Zhu Aiping
Patent Agency Code: 31002
Patent Agent: li bai
Abstract A photochromic compound is prepared through cyclization reaction between 2-hydroxy dibenzofuran and propynol derivative. Said propynol derivative is prepared by reaction between diaryl methanone and sodium (or lithium) acetylide. Said photochromic compound has the advantages of high colour light density and slow attenuation speed, and can be used for photochromic ink, plastic film, glasses, or display material.