Abstract: An acid end-capped inherently electrostatic dissipating block copolymer (acid end-capped IDP) composition has from about 95 to about 99.99 weight percent of an inherently electrostatic dissipating block copolymer (IDP) and from about 0.01 to about 5 weight percent of an acid end-capping reagent having an acid functionality of at least two. The IDP has from about 5 to about 85 weight percent of a soft segment of a polyalkylene glycol and from about 15 to about 95 weight percent of a hard segment. The hard segment is derived from a polymer having a glass transition temperature or crystalline melting temperature greater than ambient temperature and being reactive with a hydroxyl functionality. After formation of the IDP, the IDP is subsequently modified with the acid end-capping reagent to form the acid end-capped IDP composition. The acid end-capped IDP compositions may be added to thermoplastic base materials to form an alloy.

Abstract: The polyester-polyethers of the present invention are block copolymers wherein the polyester component may be crystalline or amorphous, while the polyether component is comprised of a polyethylene glycol having a molecular weight from about 990 to 3600 g/mole. Optionally, salts of 5-sulfoisophthalic acid (5-SIPA) may be included in the polyester component for superior static dissipative performance. Low levels of 5-SIPA, 0.05-5 mole %, are surprisingly effective at enhancing static dissipative performance. One aspect of this invention relates to antistatic blends having very low ionic extractables.

Abstract: A multi-layer structure comprises at least one electrostatic dissipative outer layer and a conductive core layer. The outer layer comprises a material selected from the group consisting of an inherently dissipative polymer, an inherently dissipative polymer blended with a non-conductive matrix polymer, an inherently conductive polymer blended with a non-conductive matrix polymer in an amount sufficient to impart a surface resistivity of greater than 105 and less than 1012 ohms/square, and mixtures thereof. The core layer comprises a material selected from the group consisting of an inherently conductive polymer, an inherently conductive polymer blended with a non-conductive matrix polymer, a conductive filler blended with a non-conductive matrix polymer, and mixtures thereof.

Abstract: A novel copolyester composition is provided comprising a copolyester having a melting point less than 250° C. and a quaternary ammonium salt having thermal stability at temperatures greater than 200° C. wherein the composition is characterized as having both antistatic and clarity properties.

Abstract: A process is provided for single screw extrusion of a composition or masterbatch comprising a polymer and an antistatic agent wherein the feed zone temperature is maintained below 385° F. in order to allow processability of the composition.

Abstract: A novel composition is provided comprising a copolyester having CHDM moieties in amounts of about 1 to about 20 mole percent, and a particular antistat, that is extrudable.

Abstract: In a process for extruding a thermoplastic resin in a single screw extruder, a barrel of a single screw extruder has a channel, a feed section and a first melt seal located after the feed section. The process is improved by supplying solid polymer into the feed section and venting moisture extracted from the polymer during the conversion of the polymer from a solid to a melt into a vent area and through a rear vent positioned in the feed section. An unfilled area within the channel of the barrel between the rear vent and the first melt seal forms the vent area.