Patents Assigned to DSO "Neftochim"
  • Method of producing delustered polyacrylonitrile fibers
    Patent number: 4007248
    Abstract: A method for obtaining delustered polyacrylonitrile fibers, wherein fibers are formed from a spinning solution, that is, being a mixture of two copolymer solutions, one of them being polyacrylonitrile and the other a ter grafted copolymer of acrylonitrile and styrene on rubber such as butadiene or butadiene-styrene rubber-ABS-copolymer.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: February 8, 1977
    Assignee: DSO "Neftochim"
    Inventors: Spas Kostadinov Kostadinov, Iveta Markova Benrey, Vassil Angelov Shopov, Marika Yokimova Kostadinova, Maria Staneva Dimitrova