Patents by Inventor Donald A. Bansleben

Donald A. Bansleben 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).

  • Oxygen scavenging composition with improved properties and method of using same
    Patent number: 6255248
    Abstract: A composition capable of scavenging oxygen composed of (i) a copolymer of, at least, ethylene and a strained, cyclic alkylene, preferably cyclopentene; (ii) a transition metal catalyst; (iii) preferably, a photoinitiator; and (iv) optionally, a polymeric diluent.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: July 3, 2001
    Assignee: Cryovac, Inc.
    Inventors: Donald A. Bansleben, Slawomir Opuszko, Drew V. Speer
  • Shrink controlled low-temperature-curable polyester resin compositions
    Patent number: 5082878
    Abstract: New shrinkage control agents, for unsaturated polyester resin systems, which are copolymers of vinyl versatate and vinyl acetate, i.e., poly(vinyl versatate-co-vinyl acetate). The shrink control agents are useful both with neat and filled unsaturated polyester resin systems. The shrink control agents are especially useful under conditions where the unsaturated polyester resin system is cured at or below ambient temperatures.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: January 21, 1992
    Assignee: W.R. Grace & Co.-Conn
    Inventors: Donald A. Bansleben, Joseph M. Daly, Emil Zavadsky
  • Corrosion inhibitor
    Patent number: 5017306
    Abstract: A method of preparing phosphonate compositions comprising di-(phosphonomethyl) formal is disclosed which comprises (a) forming an intimate mixture of hydroxymethylphosphonic acid and formaldehyde or its condensates, said mixture having a least about 0.5 equivalents of formaldehyde per equivalent of hydroxymethylphosphonic acid; and (b) subjecting said intimate mixture to a temperature of between about 100.degree. C. and 180.degree. C. for a time sufficient to allow the components to react to form a reacted mixture comprising di-(phosphonomethyl) formal.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: May 21, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Donald A. Bansleben, Charles G. Carter, Ranjit Kumar