Patents Assigned to Chemipro Kasei Kaisha, Limited
  • Cyclic phosphazenes, process for preparing them, flame retardant containing them as active ingredient, and resin composition containing them and molded article therefrom
    Patent number: 7317046
    Abstract: The present invention relates to cyclic phosphazenes of general formula (1) wherein Q is a halogen and/or an aryloxy group, and m is an integer of 3 to 10, which are characterized by being substantially free from linear phosphazenes of general formula (2) wherein Q is a halogen and/or an aryloxy group, and n is an integer of 1 to 20 and by having an extremely low content of halogen, and which are appropriate to flame retardants for resins; processes for preparing the same; flame retardants containing the same as an active ingredient; resin compositions containing the cyclic phosphazenes; and molded articles therefrom.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: January 8, 2008
    Assignee: Chemipro Kasei Kaisha, Limited
    Inventors: Naohiko Fukuoka, Heinosuke Yasuda, Masayuki Nishimatsu, Yoshinori Ohmae
  • Multicolor organic element, method for manufacturing the same, and display using the same
    Publication number: 20030057827
    Abstract: A multicolor organic EL element having a light emitting layer containing at least two organic dyes that can act as light emitting center (luminescence center), wherein at least one of said organic dyes is modified so as to change the colors of the light emitted from the element, and a method for manufacturing the element, and a display using the element.
    Type: Application
    Filed: August 19, 2002
    Publication date: March 27, 2003
    Applicant: Chemipro Kasei Kaisha, Limited
    Inventors: Junji Kido, Naohiko Hukuoka, Takashi Takeda
  • Multicolor organic EL element having plurality of organic dyes, method of manufacturing the same, and display using the same
    Patent number: 6459199
    Abstract: A multicolor organic EL element having a light emitting layer containing at least two organic dyes that can act as light emitting center (luminescence center), wherein at least one of said organic dyes is modified so as to change the colors of the light emitted from the element, and a method for manufacturing the element, and a display using the element.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: October 1, 2002
    Assignee: Chemipro Kasei Kaisha, Limited
    Inventors: Junji Kido, Naohiko Hukuoka, Takashi Takeda
  • Aminomethylene derivatives and ultraviolet absorbent comprising thereof
    Patent number: 6114546
    Abstract: The present invention provides an aminomethylene derivative represented by general formula (I): ##STR1## wherein A is a cyclic oxo group selected from the group consisting of following general formulae (a), (b), (c), (d) and (e): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 each independently represent H, an alkyl group or the like; R.sup.6, R.sup.7 and R.sup.8 each independently represent an alkyl group or the like; R.sup.1 and R.sup.2 or R.sup.7 and R.sup.8 may combine with each other to form a tetramethylene group or the like; R represents an alkyl group optionally containing OH or O; and n is an integer of 0 to 4, a process for the same, and the use thereof. The derivatives have an excellent ultraviolet absorption ability and a high optical stability.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: September 5, 2000
    Assignee: Chemipro Kasei Kaisha, Limited
    Inventors: Heinosuke Yasuda, Naohiko Hukuoka