Patents by Inventor Claes O. A. Lundin

Claes O. A. Lundin 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).

  • Patent number: 5037915
    Abstract: New dialkyl esters of monoperoxyoxalic acid which have a tertiary alkyl group in the perester part of the molecule while the other alkyl group is a long-chain, primary alkyl group. The compounds give rise to radicals at heating and are useful as initiators for the polymerization of ethylenically unsaturated monomers, particularly for the polymerization of vinyl chloride.
    Type: Grant
    Filed: May 16, 1989
    Date of Patent: August 6, 1991
    Assignee: Berol Nobel AB
    Inventors: Claes O. A. Lundin, Erik M. Larsson, Bjorn J. E. Akermark
  • Patent number: 4859794
    Abstract: New dialkyl esters of monoperoxyoxalic acid which have a tertiary alkyl group in the perester part of the molecule while the other alkyl group is a long-chain, primary alkyl group. The compounds give rise to radicals at heating and are useful as initiators for the polymerization of ethylenically unsaturated monomers, particularly for the polymerization of vinyl chloride.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: August 22, 1989
    Assignee: Berol Nobel Nacka AB
    Inventors: Claes O. A. Lundin, Erik M. Larsson, Bjorn J. E. Akermark
  • Patent number: 4547481
    Abstract: A process for the polymerization of ethylenically unsaturated monomers, such as vinyl chloride, wherein a solid, monomer-soluble, free-radical forming compound is used as initiator. The initiator is added to the polymerization system in the form of an aqueous dispersion which contains an ethoxylated nonionic emulsifier with an HLB-value above 15, and preferably above 17, which emulsifier does not contain cyclic inner ether bonds. Polymerizates produced according to the method have good electric insulation properties. Suitable ethoxylated nonionic emulsifiers are ethoxylated fatty acids and ethoxylated fatty alcohols. A means, suitable for polymerization of ethylenically unsaturated monomers, consists of an aqueous dispersion of a free-radical forming compound containing a nonionic ethoxylated emulsifier with an HLB-value above 15, in an amount of at least 1 percent by weight, based on the initiator, and preferably also a protective colloid such as polyvinyl alcohol.
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: October 15, 1985
    Assignee: KenoGard AB
    Inventors: Claes O. A. Lundin, Berit I. Simonsson
  • Patent number: 4499250
    Abstract: A process for the polymerization of ethylenically unsaturated monomers, such as vinyl chloride, wherein a solid, monomer-soluble, free-radical forming compound is used as initiator. The initiator is added to the polymerization system in the form of an aqueous dispersion which contains an ethoxylated nonionic emulsifier with an HLB-value above 15, and preferably above 17, which emulsifier does not contain cyclic inner ether bonds. Polymerizates produced according to the method have good electric insulation properties. Suitable ethoxylated nonionic emulsifiers are ethoxylated fatty acids and ethoxylated fatty alcohols. A means, suitable for polymerization of ethylenically unsaturated monomers, consists of an aqueous dispersion of a free-radical forming compound containing a nonionic ethoxylated emulsifier with an HLB-value above 15, in an amount of at least 1 percent by weight, based on the initiator, and preferably also a protective colloid such as polyvinyl alcohol.
    Type: Grant
    Filed: July 27, 1982
    Date of Patent: February 12, 1985
    Assignee: KenoGard AB
    Inventors: Claes O. A. Lundin, Berit I. Simonsson
  • Patent number: 4415716
    Abstract: A process for the polymerization of ethylenically unsaturated monomers wherein a solid, monomer-soluble, free-radical forming compound is used as initiator. The initiator is charged to the polymerization system in the form of an aqueous dispersion comprising an emulsifier combination which consists of an ethoxylated nonionic emulsifier with an HLB-value above 15, which does not contain cyclic inner ether bonds, and a non-ethoxylated nonionic emulsifier with an HLB-value below 9. The emulsifier combination has a resulting HLB-value within the interval 11-17 and the combination is used in an amount of at least 1% by weight based on the initiator. Polymerizates produced according to the method have good electric insulation properties. A means suitable for the polymerization of ethylenically unsaturated monomers consists of an aqueous dispersion of a free-radical forming initiator, which dispersion comprises the mentioned emulsifier combination in an amount of at least 1 percent by weight, based on the initiator.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: November 15, 1983
    Assignee: KenoGard AB
    Inventors: Claes O. A. Lundin, Berit I. Simonsson