Abstract: A direct melt spinning process for providing high filament count fine filament polyester yarns having excellent mechanical quality and along-end uniformity and unitary interlace by spinning all the filaments of such high filament count yarn from a single spinneret. Such yarns may be used as direct-use yarns and as draw-feed yarns for preparing drawn flat yarns and draw-textured yarns.

Abstract: A direct melt spinning process for providing high filament count fine filament polyester yarns having excellent mechanical quality and along-end uniformity and unitary interlace by spinning all the filaments of such high filament count yarn from a single spinneret. Such yarns may be used as direct-use yarns and as draw-feed yarns for preparing drawn flat yarns and draw-textured yarns.

Abstract: Polyester mixed fine filament yarns having excellent mechanical quality and uniformity, and preferably with a balance of good dyeability and shrinkage, are prepared by a simplified direct spin-orientation process by selection of polymer and spinning conditions.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or lower alkyl, R.sub.3 represents lower alkyl and A is a monovalent group of formula: ##STR2## wherein Y is hydrogen or the acyl radical of a hydrocarbon carboxylic acid having from 2 to 18 carbon atoms, inclusive, are employed as anticonvulsants in treating mammals, including humans.Novel compounds within the scope of the above formula are also disclosed, wherein R.sub.1 is specifically lower alkyl and provided that R.sub.1 is located in a position ortho or meta to the substituent group A when R.sub.2 is hydrogen. Disclosed also are novel intermediate compounds for preparing the above-described novel compounds of the invention, which correspond thereto but wherein the group A is replaced by a nitro-group.