Patents by Inventor Eduard F. Cassidy

Eduard F. Cassidy 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).

  • Isocyanate reactive polymers having imino/enamine functionality
    Patent number: 5142013
    Abstract: An isocyanate-reactive polymer comprising the reaction product of: (a) an isocyanate-terminated polyurethane prepolymer formed by reacting a polymeric polyol having a hydroxyl equivalent weight of at least 500 with a stoichiometric excess of an organic polyisocyanate, and (b) a stoichiometric excess, relative to the free isocyanate groups present in the prepolymer, of an imino-functional or enamine containing compound having a molecular weight less than about 750. The polymer is useful in reaction injection molding systems as an isocyanate-reactive ingredient.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: August 25, 1992
    Assignees: ICI Americas Inc., Imperial Chemical Industries PLC
    Inventors: Eduard F. Cassidy, Herbert R. Gillis, Malcolm Hannaby, Jan W. Leenslag, Alain Parfondry
  • Polyisocyanate compositions
    Patent number: 5081211
    Abstract: Polyisocyanate compositions with useful properties are obtained by reacting uretonimine and/or carbodiimide modified polyisocyanates with carboxylic acids.The polyisocyanate compositions are useful in the preparation of elastomeric products.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: January 14, 1992
    Assignee: Imperial Chemical Industries PLC
    Inventors: Eduard F. Cassidy, Jan W. Leenslag
  • Polyureas by reaction injection moulding of enamino-functional aliphatic polyether resin-containing systems and an enamine-terminated polyether
    Patent number: 5072026
    Abstract: A reaction system is provided for use in forming polyureas by the reaction injection molding process which employs an enamino-functional polyether resin as an isocyanate-reactive component.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: December 10, 1991
    Assignees: ICI Americas Inc., Imperial Chemical Industries PLC
    Inventors: Eduard F. Cassidy, Herbert R. Gillis
  • Polyisocyanate compositions
    Patent number: 4933416
    Abstract: A polyisocyanate composition comprising a reaction product of a stoichiometric excess of an organic polyisocyanate and:(i) a polymeric polyol having an average nominal hydroxyl functionality greater than 2 and an average hydroxyl equivalent weight of from about 500 to about 5000, and(ii) a polymeric polyamine having an average nominal primary and/or secondary amino functionality of from about 2 to about 3 and an average amine equivalent weight of from about 500 to about 5000, the polyol and the polyamine having glass transition temperatures below room temperature. The composition is especially useful in the production of elastomers by the RIM process.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: June 12, 1990
    Assignees: ICI Americas Inc, Imperial Chemical Industries PLC
    Inventors: Herbert R. Gillis, Eduard F. Cassidy, Alain Parfondry, Jan W. Leenslag
  • Reaction injection moulding compositions comprising a prepolymer and at least one imino-functional compound
    Patent number: 4910279
    Abstract: A reaction system for use in making a reaction injection moulded elastomer, said system comprising the following components:(A) a polyisocyanate composition comprising a reaction product of a stoichiometric excess of an organic polyisocyanate and:(i) a polymeric polyol having an average nominal hydroxyl functionality greater than 2 and an average hydroxyl equivalent weight of from about 500 to about 5000, and(ii) a polymeric polyamine having an average nominal primary and/or secondary amino functionality of from about 2 to about 3 and an average amine equivalent weight of from about 500 to about 5000, the polyol and the polyamine having glass transition temperatures below room temperature.(B) an isocyanate-reactive composition comprising at least one imino-functional compound.
    Type: Grant
    Filed: March 4, 1988
    Date of Patent: March 20, 1990
    Assignees: ICI Americas, Inc., Imperial Chemical Industries, PLC
    Inventors: Herbert R. Gillis, Eduard F. Cassidy, Alain Parfondry