Halogenated phthalocyanine compound, method for preparing same and optical recording medium using same
Номер патента: CA2072261C
Опубликовано: 12-12-1995
Автор(ы): Hisato Itoh, Katashi Enomoto, Kenichi Sugimoto, Shin Aihara, Takahisa Oguchi, Tsutomu Nishizawa
Принадлежит: Mitsui Toatsu Chemicals Inc, Yamamoto Chemicals Inc
Опубликовано: 12-12-1995
Автор(ы): Hisato Itoh, Katashi Enomoto, Kenichi Sugimoto, Shin Aihara, Takahisa Oguchi, Tsutomu Nishizawa
Принадлежит: Mitsui Toatsu Chemicals Inc, Yamamoto Chemicals Inc
Реферат: The present invention is directed to a halogenated alkoxyphthalocyanine which is useful as a dye, a photoelectric functional material, a recording or memory material and particularly a.recording material for a writable recording medium (writable compact disks, CD-WO) as well as a method for preparing the halogenated alkoxyphthalocyanine as a mixture of several kinds of isomers in a high yield. There are provided a method for preparing a mixture of the halogenated alkoxyphthalocyanines represented by the formula (8) which comprises the step of reacting alkoxy-phthalocyanines represented by the formula (7) and a mixture thereof with a halogenating agent in a mixed solvent of an organic solvent and water, a mixture of compounds represented by the formula (8), and an optical recording medium using the same: (7) (8)
Metallocenyl phthalocyanines as optical recording media
Номер патента: CA2444105C. Автор: Beat Schmidhalter,Michael Schulz,Annemarie Wolleb,Heinz Wolleb,Colin Morton,Wolfgang Freitag,Jean-Luc Budry,Heinz Spahni,Juergen Beyrich,Gerald Anthony Murphy,Rudolf Blattner,Christian Stern,Roland Zoelper. Владелец: Ciba Spezialitaetenchemie Holding AG. Дата публикации: 2011-06-07.