Patents by Inventor Malcolm F. Hallam

Malcolm F. Hallam 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).

  • High performance PVOH stablilized EVA adhesives
    Patent number: 5571860
    Abstract: An emulsion adhesion composition comprising a polyvinyl alcohol stabilized polymer emulsion; the polymer comprising 40 to 94.5% by weight of a vinyl ester of an C.sub.1 -C.sub.13 alkanoic acid, 5 to 40% by weight ethylene and 0.5 to 10% by weight N-vinyl formamide or N-vinyl pyrrolidone, the adhesive being characterized by superior adhesion and heat resistance.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: November 5, 1996
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Pravin K. Kukkala, Malcolm F. Hallam, M. Erin Jones, Richard K. Vetterl
  • Formaldehyde-free crosslinking emulsion polymer systems based on vinyl ester dialkoxyhydroxyethyl acrylamide co- and terpolymers
    Patent number: 5252663
    Abstract: Formaldehyde free crosslinking emulsion polymers are prepared by the addition of N-(2,2-dialkoxy-1-hydroxy)ethyl acrylamide to a vinyl ester based polymer. The resultant emulsions can be used as binders for nonwovens or fiberfill or as woodworking adhesives.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: October 12, 1993
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Rama S. Chandran, Carmine P. Iovine, Paul R. Mudge, John C. Leighton, Malcolm F. Hallam, Pravin K. Kukkala