Abstract: Melt spun yarns are treated with a finish which is an aqueous solution or dispersion containing an alkoxylated alcohol or thiol as the sole essential organic component thereof.

Abstract: A finish for acrylic fiber consists essentially of:(A) an ethoxylated alkyl phenol;(B) a neutralized partial ester of phosphoric acid and an aliphatic monohydric alcohol; and(C) a mixture consisting essentially of(1) mineral oil;(2) an ethoxylated aliphatic monohydric alcohol; and(3) a neutralized partial ester of phosphoric acid and an ethoxylated aliphatic monohydric alcohol.

Abstract: The invention is an integral, electrically-conductive textile filament comprising from 2 to about 1000 electrically-conducting, longitudinally-directed strata of fiber-forming polymeric material, and one non-conducting stratum of the same polymeric material in coextensive union with each electrically-conducting stratum along the length of at least one of its major surfaces. Each electrically-conducting stratum of polymeric material has dispersed therein finely-divided particles of electrically-conductive carbon black. The electrical resistance of the integral filament is not more than about 10.sup.9 ohms/cm.

Abstract: Yarn from a rotatable package of the type comprising a cylindrical support upon which the yarn is packaged by winding, is fed in a precise and certain manner to a source of utilization of the yarn. A drive roll is positioned in proximity to, but spaced from the yarn package, and is mounted for rotation about its longitudinal axis, the longitudinal axis of the drive roll being substantially parallel to the longitudinal axis of the yarn package. A resilient circular band having an annular cross-section is stretched over the package and the drive roll so that the band is urged against the exterior surface of both. A means is provided for driving the drive roll at a rotational velocity corresponding to the rate of consumption of the yarn, and guide means directs the yarn to the source of its utilization.

Abstract: Filamentary vinyl polymer compositions are commonly prepared according to a procedure which includes the following steps:A. polymerizing a vinyl monomer in a concentrated aqueous inorganic salt solution to produce a vinyl polymer solution;B. spinning the resulting vinyl polymer solution through a spinnerette into a coagulating bath containing an aqueous solution of the same inorganic salt as that employed in the polymerization step, the concentration of inorganic salt in the coagulating bath being maintained at a level which affords precipitation of the vinyl polymer to form a coherent filamentary gel;C. washing the vinyl polymer filamentary gel so produced;D. recovering the concentrated aqueous inorganic salt solution from the washing and coagulation steps by concentrating the combined effluents thereof; andE. recycling the recovered concentrated aqueous inorganic salt solution into the polymerizing step.

Abstract: The formation of non-aqueous polymeric dispersions, solutions, hydrosols and collodial suspensions by polymerizing vinyl monomers (A) in a hydrocarbon medium containing dissolved therein a stabilizing component (B) comprising an acrylic polymer previously formed from acrylic monomers (E). The invention comprises use, in (B), of minor proportions of (2-(1-aziridinyl)-ethyl- methacrylate to provide, by reason of its high reactivity, higher molecular weight backbones (B) and simultaneously by reason of its high functionality, to provide active sites for grafting side chains onto backbone (B). Furthermore, the reactivity thereof can make the final product self-cross-linking. The above system produces a dispersion of a vinyl polymer (C) formed from the polymerized vinyl monomers (A) in the hydrocarbon medium wherein a modified stabilizer (D) is formed either in situ from a precursor or in a preliminary separate step by grafting a portion of the vinyl monomers (A) onto the soluble polymeric stabilizer backbone (B).

Abstract: A cylinder for supporting a fabric sample to be wear tested is mounted for rotation about its longitudinal axis and simultaneous reciprocation along its longitudinal axis. The sample to be wear tested is secured to the cylinder so that the inner surface of the sample is in congruity with the exterior of the major surface of the cylinder. Provided in proximity to the cylinder are a plurality of plates which are spaced from each other along the length of the cylinder, each plate affixed on one major surface to a separate rod with the free major surface of each plate positioned so that it may contact the outer surface of the sample. Each rod is attached at its other end to a crankshaft, by means of which a reciprocating motion is imparted to each rod, whereby each plate is moved back and forth from a position away from the sample to a position in contact with the sample.