Patents by Inventor Holger Spanggaard

Holger Spanggaard 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 FORMING RANDOM (METH)ACRYLATE CONTAINING PREPOLYMERS
    Publication number: 20090111905
    Abstract: The present invention relates to processes for forming random prepolymers comprising comprising at least one (meth)acrylate component and at least one (meth)acrylamide. More specifically, the present invention relates to processes comprising providing a first reaction mixture comprising at least one (meth)acrylate component having a first reaction rate constant, k1; adding to said first reaction mixture, under reaction conditions comprising a reaction time, at least one (meth)acrylamide component having a second reaction rate constant k2 which is less than about 0.5 k1, wherein at least one of said (meth)acrylate component and said (meth)acrylamide component comprise silicone and at least one of said (meth)acrylate component and said (meth)acrylamide component comprise at least one hydrophilic component; and said at least one (meth)acrylamide component is added gradually over a reaction time and under prepolymer reaction conditions to form a prepolymer.
    Type: Application
    Filed: October 6, 2008
    Publication date: April 30, 2009
    Inventors: Ture Kindt-Larsen, Holger Spanggaard, Bent Magnusson, Helene Rossignol, Jens-Erik Soerensen, Joe M. Wood