Abstract:
A POLYESTER COMPOSITION CONSISTING OF A POLYETHERPOLYESTER BLOCK COPOLYMER CONSISTING OF A POLYETHER SEGMENT AND A POLYESTER SEGMENT, THE AVERAGE DEGREE OF POLYMERIZATION OF SAID POLYETHER SEGMENT BEING 100-1,000 AND THE POLYESTER SEGMENT BEING A SYNTHETIC LINEAR POLYESTER. THE COMPOSITION FORMS FIBERS, BRISTLES, FILMS AND OTHER THREE-DIMENSIONAL SHAPED ARTICLES, AND HAS IMPROVED ANTISTATIC PROPERTIES.
Abstract:
Provided are polyamides having properties which make them useful as adhesives, sizing agents, paper strength enhancers and as resins. These polyamides are prepared by heating an alpha-(N,N-disubstituted amino)-E-caprolactam, alone or in combination with one or more comonomers, in the presence of an anionic polymerization catalyst, and are characterized by a repeating unit reprsented by the formula wherein R and R' are each a lower alkyl group or a cyclic amine residue, and also having a relative viscosity of at leasrt 1.5.