Process for preparing mineral reinforced polylactam compositions

Abstract

Abstract Improved lactam slurries containing a major amount of a mineral reinforcing agent suitable for conversion to a reinforced polylactam composition by the initiated, anionic polymerization process and essentially containing an effective amount of from about 0.1 to about 1.0 weight percent, based on the mineral, of an adduct prepared by the reaction of (1) a higher alkylbenzenesulfonic acid, wherein the alkyl group contains from nine to 15 carbon atoms, with (2) an omega aminoalkylenetrialkoxysilane, wherein the alkylene group contains from two to 10 carbon atoms and each of the alkoxy groups contain from one to three carbon atoms. The presence of said adduct acts as a fluidifying agent to provide a lower viscosity slurry at a given mineral concentration enabling better filling of molds in the cast-polymerization process and/or permitting the use of slurry compositions with higher mineral concentrations with processing equipment operating near the upper limit of prior art mineral concentration for any particular mineral-lactam composition.

Inventors

• 👤 Robert Z Greenley
• 👤 Jerry M Sugerman

Bibliographic Details