Material Is A Nitrogen-containing Compound Other Than A Lactam Patents (Class 528/315)
  • Anionic copolymerization of 2-pyrrolidone with caprolactam or piperidone
    Patent number: 4101531
    Abstract: Copolymers of 2-pyrrolidone and C.sub.5 -C.sub.6 lactams (caprolactam and piperidone) are provided in solid form, at relatively high rates and molecular weights by polymerization in the presence of alkaline catalysts and carbon dioxide, by the inclusion of an auxiliary catalyst and a copolymerization promoter comprising certain onium salts and N-acyl lactams, respectively.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: July 18, 1978
    Assignee: Chevron Research Company
    Inventor: Robert Bacskai