Negatively birefringent polyesters and optical films
申请人:Wang Lei
公开号:US08854730B2
公开(公告)日:2014-10-07
Presently described are multilayer optical films, oriented polyester films, negatively birefringent copolyester polymers, fluorene monomers, and polyester polymers prepared from such fluorene monomers. In one embodiment, the multilayer optical film comprises at least one first birefringent optical layer; and at least one second optical layer having a lower birefringence than the first optical layer; wherein at least one of the optical layers comprises a negatively birefringent polyester polymer comprising a backbone and repeat units comprising at least one pendent aromatic group that is conformationally locked relative to the backbone.
[EN] CARBAMOYLOXIME COMPOUND, AND POLYMERIZATION INITIATOR AND POLYMERIZABLE COMPOSITION CONTAINING SAID COMPOUND<br/>[FR] COMPOSÉ DE CARBAMOYLOXIME, ET INITIATEUR DE POLYMÉRISATION ET COMPOSITION POLYMÉRISABLE CONTENANT LEDIT COMPOSÉ<br/>[JA] カルバモイルオキシム化合物並びに該化合物を含有する重合開始剤及び重合性組成物
NEGATIVELY BIREFRINGENT POLYESTERS AND OPTICAL FILMS
申请人:Wang Lei
公开号:US20120170118A1
公开(公告)日:2012-07-05
Presently described are multilayer optical films, oriented polyester films, negatively birefringent copolyester polymers, fluorene monomers, and polyester polymers prepared from such fluorene monomers. In one embodiment, the multilayer optical film comprises at least one first birefringent optical layer; and at least one second optical layer having a lower birefringence than the first optical layer; wherein at least one of the optical layers comprises a negatively birefringent polyester polymer comprising a backbone and repeat units comprising at least one pendent aromatic group that is conformationally locked relative to the backbone.