Patents by Inventor Philip John Allan Ritchie

Philip John Allan Ritchie 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).

  • Initiating system for solid polyester granule manufacture
    Patent number: 6533967
    Abstract: The invention relates to the use of a diacyl peroxide in combination with an aromatic amine of formula (I) where R1 is C1-C20 alkyl having at least one hydroxy substituent or —(CH′CHR′—O)nH where n is 1 to 10 and each R′ is independently selected from H and C1-C3 alkyl; R2 is C1-C20 alkyl optionally substituted with one or more hydroxy groups, or —(CHR′CHR′—O)nH where n=1 to 10; and each R is independently selected from H and C1-C3 alkyl; and Ar is an optionally substituted aryl group; as a redox initiating system in a process for the manufacture of polyester granules by suspension polymerisation. This invention also relates to a process for preparing solid polyester granules using such a redox initiating system.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: March 18, 2003
    Assignee: Orica Australia Pty Ltd
    Inventors: Philip John Allan Ritchie, Algirdas Kazimieras Serelis, Bruce Leary