Patents by Inventor Isabel Macian Aviles

Isabel Macian Aviles has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the manufacture of polycarbonate compositions
    Patent number: 9074045
    Abstract: A continuous process for the manufacture of a polycarbonate comprises: combining an aromatic dihydroxy compound stream and a diaryl carbonate stream to form a mixture; controlling a weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound by: measuring a sound velocity, Vs, in the mixture at an operating temperature of the controlling step; and determining the weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound in the mixture; and adjusting a flow rate of at least one of the aromatic dihydroxy compound stream and the diaryl carbonate stream, if needed, to achieve a desired weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound; and polymerizing the aromatic dihydroxy compound and the diaryl carbonate in the presence of a catalyst to produce the polycarbonate.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: July 7, 2015
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Ignacio Vic Fernandez, Isabel Macian Aviles
  • Late-addition catalyst formulation, reactor system, and method for producing polycarbonate
    Patent number: 9062157
    Abstract: The present invention provides a melt polymerization reactor system and method of producing polycarbonate using a late-addition catalyst formulation having a melt transesterification catalyst dispersed in a liquid carrier system which preferably includes less than 10 wt % water. The formulation also preferably includes a liquid carrier system having phenol and a cosolvent. The melt transesterification catalyst can be present in the formulation in a range of 50 ppm to 60,000 ppm.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: June 23, 2015
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Jorge A. Garcia Agudo, Ignacio Vic Fernandez, Kazutoyo Uno, Fernando Olmedo Fernandez, Isabel Macian Aviles
  • PROCESS FOR THE MANUFACTURE OF POLYCARBONATE COMPOSITIONS
    Publication number: 20140378643
    Abstract: A continuous process for the manufacture of a polycarbonate comprises: combining an aromatic dihydroxy compound stream and a diaryl carbonate stream to form a mixture; controlling a weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound by: measuring a sound velocity, Vs, in the mixture at an operating temperature of the controlling step; and determining the weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound in the mixture; and adjusting a flow rate of at least one of the aromatic dihydroxy compound stream and the diaryl carbonate stream, if needed, to achieve a desired weight or molar ratio of the diaryl carbonate to the aromatic dihydroxy compound; and polymerizing the aromatic dihydroxy compound and the diaryl carbonate in the presence of a catalyst to produce the polycarbonate.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 25, 2014
    Inventors: Ignacio Vic Fernandez, Isabel Macian Aviles
  • LATE-ADDITION CATALYST FORMULATION, REACTOR SYSTEM, AND METHOD FOR PRODUCING POLYCARBONATE
    Publication number: 20140228526
    Abstract: The present invention provides a melt polymerization reactor system and method of producing polycarbonate using a late-addition catalyst formulation having a melt transesterification catalyst dispersed in a liquid carrier system which preferably includes less than 10 wt % water. The formulation also preferably includes a liquid carrier system having phenol and a cosolvent. The melt transesterification catalyst can be present in the formulation in a range of 50 ppm to 60,000 ppm.
    Type: Application
    Filed: June 21, 2012
    Publication date: August 14, 2014
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Jorge A. Garcia Agudo, Ignacio Vic Fernandez, Kazutoyo Uno, Fernando Olmedo Fernandez, Isabel Macian Aviles