Patents by Inventor Edward J. Troy

Edward J. Troy 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 butadiene-based impact modifiers
    Patent number: 5599854
    Abstract: An improved process for preparing core/shell MBS modifiers is disclosed, wherein by adding feeds of the monomers which form the second and/or third stage polymers prior to completion of polymerization of the earlier stages, a process with substantially reduced polymerization time results with no loss in properties of the product. The process further includes agglomeration of the rubbery polymer to increase particle size during the polymerization process.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: February 4, 1997
    Assignee: Rohm and Haas Company
    Inventors: Edward J. Troy, Anibal Rosado
  • Preparation of butadiene-based impact modifiers
    Patent number: 5534594
    Abstract: An improved process for preparing core/shell MBS modifiers is disclosed, wherein by adding feeds of the monomers which form the second and/or third stage polymers prior to completion of polymerization of the earlier stages, a process with substantially reduced polymerization time results with no loss in properties of the product. The process further includes agglomeration of the rubbery polymer to increase particle size during the polymerization process.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: July 9, 1996
    Assignee: Rohm and Haas Company
    Inventors: Edward J. Troy, Anibal Rosado
  • Amorphous, aromatic polyester containing impact modifier
    Patent number: 5409967
    Abstract: Impact modifiers which produce transparent, high notched Izod impact strength blends with amorphous, aromatic polyesters are described. The impact modifiers are core-shell polymers with cores comprised mainly of rubbery polymers of diolefins and vinyl aromatic monomers and shells comprised mainly of styrene copolymers (e.g. styrene and hydroxyalkyl (meth)acrylate).
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: April 25, 1995
    Assignee: Rohm and Haas Company
    Inventors: William G. Carson, Choung-Houng Lai, Edward J. Troy
  • Amorphous, aromatic polyester containing impact modifier
    Patent number: 5321056
    Abstract: Impact modifiers which produce transparent, high notched Izod impact strength blends with amorphous, aromatic polyesters are described. The impact modifiers are core-shell polymers with cores comprised mainly of rubbery polymers of diolefins and vinyl aromatic monomers and shells comprised mainly of styrene copolymers (e.g. styrene and hydroxyalkyl (meth)acrylate).
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: June 14, 1994
    Assignee: Rohm and Haas Company
    Inventors: William G. Carson, Choung-Houng Lai, Edward J. Troy
  • Methyl methacrylate-butadiene-styrene impact modifier polymers, polyvinyl chloride, compositions and methods
    Patent number: 4379876
    Abstract: Methyl methacrylate-butadiene-styrene polymer impact modifiers are improved by mixing them with about 0.01 to 5 percent by weight of a compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are C.sub.1 to C.sub.4 alkyl, R.sub.3 and R.sub.4 are H, C.sub.1 to C.sub.4 alkyl, or 4'-hydroxy-2'-R.sub.2 -5'-R.sub.1 -phenyl. Polyvinyl chloride (PVC) is mixed with the improved impact modifiers and has improved dispersion and resistance to discoloration.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: April 12, 1983
    Assignee: Rohm and Haas Company
    Inventors: Richard R. Clikeman, Donald H. Jones, Thomas J. Shortridge, Edward J. Troy