1
Masuzo Yokoyama, Fumio Keitoku, Junji Takano, Masami Hasegawa, Yukiko Tatsukawa: Process for producing aromatic polycarbonate. Mitsubishi Chemical Corporation, Dilworth & Barrese, June 18, 1996: US05527875 (21 worldwide citation)

A process for producing an aromatic polycarbonate having a weight average molecular weight of from 7,000 to 60,000 is disclosed, comprising melt polycondensing an aromatic diol compound (e.g., bisphenol A) and a diaryl carbonate compound (e.g., diphenyl carbonate) in the presence of a combination of ...


2
Masuzo Yokoyama, Junji Takano, Kazuhide Takakura: Melt preparation of polycarbonate with metal compound and p compound catalysts. Mitsubishi Petrochemical Company, Dilworth & Barrese, October 5, 1993: US05250655 (3 worldwide citation)

An aromatic polycarbonate of improved color value and high molecular weight is obtained by the addition of phosphorous acid and/or a phosphorous ester to the melt polycondensation reaction medium containing aromatic diol, carbonate diester and a metal-containing compound as ester interchange catalys ...


3
Masuzo Yokoyama, Junji Takano, Masami Hasegawa, Yukiko Tatsukawa: Process for producing aromatic polycarbonate. Mitsubishi Chemical Corporation, Dilworth & Barrese, November 26, 1996: US05578694 (3 worldwide citation)

A process for producing an aromatic polycarbonate is described, which comprises melt-polycondensing an aromatic diol compound with a diaryl carbonate compound in the presence of an interesterification catalyst, said interesterification catalyst comprising a quaternary phosphonium salt compound repre ...


4
Masuzo Yokoyama, Kazuhide Takakura, Junji Takano: Process for producing aromatic polycarbonate. Mitsubishi Petrochemical, Sughrue Mion Zinn Macpeak & Seas, February 21, 1995: US05391691 (3 worldwide citation)

A process for producing an aromatic polycarbonate with improved heat resistance comprising melt polycondensing an aromatic diol compound and a carbonic acid diester compound in the presence of an interesterification catalyst and in the co-presence of an organosilicon compound.


5
Masayuki Nakajima, Katsushige Hayashi, Michio Kawai, Junji Takano: Aromatic polycarbonate composition. Mitsubishi Gas Chemical Company, Mitsubishi Chemical Corporation, Sughrue Mion Zinn Macpeak & Seas PLLC, February 13, 2001: US06187896 (2 worldwide citation)

An aromatic polycarbonate composition which has excellent thermal stability and maintains high transparency and a satisfactory hue even at high temperatures. The aromatic polycarbonate composition comprises: a polycarbonate obtained by reacting at least one aromatic dihydroxy compound with a compoun ...


6
Masayuki Nakajima, Katsushige Hayashi, Michio Kawai, Junji Takano: Aromatic polycarbonate composition. Mitsubishi Gas Chemical Co, Mitsubishi Chem, July 5, 2000: EP1016688-A2

An aromatic polycarbonate composition which has excellent thermal stability and maintains high transparency and a satisfactory hue even at high temperatures. The aromatic polycarbonate composition comprises: a polycarbonate obtained by reacting at least one aromatic dihydroxy compound with a compoun ...


7
Junji Takano, Hiroya Mitsushima: Conveyance system and conveyance method. HIRATA CORPORATION, Buchanan Ingersoll & Rooney PC, September 13, 2016: US09443717

A conveyance system according to the present invention includes a processing station, first to third conveyance apparatuses arranged in a conveying direction of a work piece. The second conveyance apparatus is provided in the station. The system further includes a lifting apparatus disposed below th ...


8
Masuzo Yokoyama, Junji Takano, Masami Hasegawa: Process for producing aromatic polycarbonate. Mitsubishi Chemical Corporation, YANG LIQIN, July 24, 1996: CN95118412

The invention describs a process for producing an aromatic polycarbonate, which comprises melt-polycondensing an aromatic diol compound with a diaryl carbonate compound represented by formula (I): wherein R and R each independently represent an alkyl group having 1 to 10 carbon atoms or an alkoxy gr ...


9
Masuzo Yokoyama, Fumio Keitoku, Junji Takano: Process for producing aromatic polycarbonate. Mitsubishi Chemical Corporation, QI ZENGDU TIAN SHEREN, October 11, 1995: CN95100649

A process for producing an aromatic polycarbonate having a weight average molecular weight of from 7,000 to 60,000 is disclosed, comprising melt polycondensing an aromatic diol compound (e.g., bisphenol A) and a diaryl carbonate compound (e.g., diphenyl carbonate) in the presence of a combination of ...