Patents Assigned to Wolff & Kaaber
  • Polyfuran foams and a method of preparing same
    Patent number: 3975319
    Abstract: A synthetic foam and a process for its preparation is disclosed comprising (a) a polymerized mass of at least 50 parts by weight of furfuryl alcohol, at least one part by weight of at least one amino compound selected from the group consisting of urea, thiourea and melamine, and up to 49 parts by weight formaldehyde, and (b) an equal or less amount of filler.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: August 17, 1976
    Assignee: Wolff & Kaaber
    Inventors: Hans-Ole Larsen, Sven Barfoed, John Arthur Gooch Gent
  • Polyfuran foams and a method of preparing same
    Patent number: 3975318
    Abstract: A synthetic foam and a process for its preparation is disclosed comprising (a) a polymerized mass of at least 50 parts by weight of furfuryl alcohol, at least one part by weight of at least one amino compound selected from the group consisting of urea, thiourea and melamine, and up to 49 parts by weight formaldehyde, and (b) an equal or less amount of filler.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: August 17, 1976
    Assignee: Wolff & Kaaber
    Inventors: Hans-Ole Larsen, Sven Barfoed, John Arthur Gooch Gent