Patents by Inventor Iraj K. Shahidi

Iraj K. Shahidi 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).

  • Preparation of ultraviolet curable acrylated polymers
    Patent number: 4035321
    Abstract: There is disclosed a process for conveniently preparing polymers having pendant ultraviolet polymerizable groups of the acrylate or methacrylate types, which process involves co-reacting a polymer containing the C-X moiety with a monomer having the general formula ##STR1## wherein X is OH or COOH and Y is OH when X is OH, and OR'OH when X is COOH, wherein R' is C.sub.1 -C.sub.6 alkyl. This process is catalyzed utilizing an essentially solid ion exchange catalyst.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: July 12, 1977
    Assignee: Celanese Corporation
    Inventors: Iraj K. Shahidi, John C. Trebellas
  • Low gloss ultraviolet curable coatings utilizing .alpha.,.alpha.,.alpha.-trichlorotoluene as a photoinitiator
    Patent number: 3992275
    Abstract: The use of .alpha.,.alpha.,.alpha., trichlorotoluene as a photoinitiator in ultraviolet curable coating compositions is disclosed. This initiator is uniquely suited to produce ultraviolet coatings which exhibit low gloss properties.
    Type: Grant
    Filed: November 25, 1974
    Date of Patent: November 16, 1976
    Assignee: Celanese Corporation
    Inventors: Iraj K. Shahidi, Kenneth J. Zeliznak