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Pyrrolidone, Capryllactam and Laurolactam as new Monomers for Polyamide Fibers
Author(s) -
Dachs K.,
Schwartz E.
Publication year - 1962
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.196204301
Subject(s) - monomer , cyclooctatetraene , condensation polymer , polymer chemistry , sulfuric acid , acetylene , chemistry , polyamide , formaldehyde , ketone , organic chemistry , polymer , molecule
The industrial production of capryllactam (1‐azacyclononan‐2‐one) and of laurolactam (1‐azacyclotridecan‐2‐one) starts with cyclization of acetylene or butadeine to give cyclooctatetraene or cyclooctadiene, or cyclization of butadiene to give cyclododecatriene. Further steps are: oxidation of the cyclic hydrocarbon to the ketone, formation of the oxime, and rearrangement of the latter with sulfuric acid. Pyrrolidone can be prepared from acetylene and formaldehyde by way of butyrolactone. The behavior of the lactams during polycondensation is described and the properties of the resulting fibers are compared with those of the known polyamide fibers.