Abstract: The present invention relates to a method of synthesizing 1-chloro-1-iodoethane by reacting hydrogen iodide with vinyl chloride monomer in the presence of an iodine containing catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane which is useful as a chain transfer agent in the polymerization of vinyl chloride monomer. The 1-chloro-1-iodoethane formed by the instant invention can be made separately in a conventional synthesis apparatus or the compound can be synthesized in situ in the reaction vessel used for polymerization of vinyl chloride.

Abstract: Rigid thermoplastic articles are disclosed which have reduced surface gloss. The reduced gloss is achieved by the use of a mixture of polymers having different viscoelastic properties. The preferred embodiment is a mixture of PVC and crosslinked PVC.

Abstract: The subject invention relates to catalyst compositions for oxychlorination of ethylene to produce 1,2-dichloroethane. The catalysts comprise copper chloride, at least one alkali metal, at least one rare earth metal, and at least one Group IIA metal on a high surface area support for fluid bed applications or on a high or low surface area support for fixed bed applications. The catalyst compositions are prepared by depositing the metals on a support. The use of the catalyst compositions of the invention in the oxychlorination of ethylene to EDC results in high percent ethylene efficiency, high EDC product purity and high percent HCl conversion without exhibiting catalyst stickiness. A process for oxychlorination of ethylene to produce 1,2-dichloroethane is also disclosed.

Abstract: A method for improving the miscibility of vinyl halide polymer based resins with one or more essentially immiscible polymer resins is disclosed. This method comprises adding a polyimide polymer to a mixture containing the vinyl halide resin and the immiscible polymer. Articles made from these compositions are useful for medical applications.

Abstract: An elongate substantially rectangular louver or assembly of louvers each comprising an elongate conformable web sleeve or web envelope which substantially or completely surrounds and conforms generally to the periphery of a slat inserted therein and which said louver has a depending means for removable attachment to a louver assembly support means and said slat is removably attached to said web sleeve or web envelope.

Abstract: The present invention relates to a method of synthesizing 1-chloro-1-iodoethane by reacting hydrogen iodide with vinyl chloride monomer in the presence of an iodine containing catalyst under certain specified conditions. The resulting product of the reaction is a high yield, high purity 1-chloro-1-iodoethane. This 1-chloro-1-iodoethane is useful as a chain transfer agent in the polymerization of vinyl chloride monomer in a process which mimics a pseudo-living radical polymerization.

Abstract: The present invention relates to electrostatic dissipative impact modified polymeric compositions comprising an effective amount of a chain extended block copolymer, polyvinyl halide and no more than 10 weight parts of a polymeric impact modifier per 100 weight parts of polyvinyl chloride. The chain extended block copolymer is formed from reacting a di-functional polyether with a chain extender which is a condensate selected from the group consisting of polyundecanolactam, polydodecanolactam, poly(11-aminoundecanoic acid) and (12-aminododecanoic acid).

Abstract: Polyvinyl halide resin absent allylic halogen is disclosed. Another polyvinyl halide resin absent allylic halogen, allylic branching and unsaturation is also disclosed. The compositions of this invention are prepared by contacting any polyvinyl halide resin with a hydrogen-substituting compound that has a selective affinity for the allylic halogens.

Abstract: The subject invention relates to catalyst compositions for oxychlorination of ethylene to produce 1,2-dichloroethane. The catalysts comprise copper chloride, at least one alkali metal, at least one rare earth metal, and at least one Group IIA metal on a high surface area support for fluid bed applications or on a high or low surface area support for fixed bed applications. The catalyst compositions are prepared by depositing the metals on a support. The use of the catalyst compositions of the invention in the oxychlorination of ethylene to EDC results in high percent ethylene efficiency, high EDC product purity and high percent HCl conversion without exhibiting catalyst stickiness. A process for oxychlorination of ethylene to produce 1,2-dichloroethane is also disclosed.

Abstract: This invention discloses methods of polymerization in the field of PVC dispersion resins, in particular, dispersion PVC, made by the emulsion or microsuspension process with or without monomer metering. The invention achieves improved initial plastisol color without destroying blush resistance by employing techniques which entail at least two air evacuation steps. In the preferred embodiment a specified amount of a metabisulfite reducing agent is incorporated into the polymerization medium and/or monomer mixture followed by polymerization initiaton and further processing. Another disclosure of the invention is a simple method for reducing the haze of dispersion resin plastisol films thereby improving their clarity by the addition of a small amount of non-copolymerizable polybasic carboxylic acid to the dispersion resin or monomer dispersion prior to isolating the resin. The preferred poly basic acids are non-ethylenic unsaturated, di- or tri-carboxylic acids like citric acid and tartaric acid.

Abstract: An internally plasticized polyvinyl halide obtained by the polymerization of a vinyl halide monomer in the presence of a polyester polymeric plasticizer substantially derived from glutaric acid and a diol. Articles made therefrom exhibit a unique balance of improved permanence, low plasticizer extraction high clarity and low haze. The polymers are particularly suitable for use in automotive interior parts or containers for blood components or foodstuffs.

Abstract: Blend compositions and process are provided comprising admixing of chlorinated polyvinyl chloride and polyvinyl chloride, each having specified inherent viscosity wherein the difference in the inherent viscosity of the polyvinyl chloride of the blend, measured in similar accordance with ASTM-D1243 is at least 0.2 units higher than the precursor polyvinyl chloride for the chlorinated polyvinyl chloride of the blend. Preferably the I.V. of the polyvinyl halide is from 0.2 to 1.0 units higher with the most preferred difference in I.V. (.DELTA.I.V.) being 0.35 to 0.65 units so as to yield a balance of property improvements including tensile strength, impact resistance, heat distortion temperature and weatherability. The compositions also can further comprise a Tg enhancing agents which otherwise embrittle conventional PVC compounds.

Abstract: Compositions, composite articles and process for producing same are provided from a reinforced polyvinyl halide composition (A) comprising a high molecular weight polyvinyl halide resin, a plasticizer, and a reinforcement material, such as glass fibers, in combination with (B) a composition having adhesion to (A). Preferably (B) comprises a thermoplastic compound selected from the group consisting of PVC, plasticized PVC, styrene derivatives, urethane derivatives, acrylic derivatives, acrylonitrile derivatives, polyester derivatives, and mixtures thereof, with the most preferred composition being an unreinforced, plasticized polyvinyl halide composition. The composite article exhibits good strength, low sag at high use temperatures, and lowered coefficient of thermal expansion for use in contact with metal or polymeric substrates such as panels.

Abstract: This invention pertains to multilayer compositions, articles and processes for preparing and thermoforming said compositions and articles. Multilayer compositions exemplified comprise:(A) a first layer of a polyvinyl chloride composition comprising the specified compounding ingredients and represented herein by preferred embodiments; andat least one other layer (B) comprising: a polyvinyl chloride composition together with specified and preferred compounding ingredients and including a heat distortion temperature improving additive, wherein the heat distortion temperature of the dominant phase, preferably a single phase, is at least three degrees celsius higher than said heat distortion temperature of said first layer.Thermoformed articles of the invention are useful for example as inner-liners or door liner panels for referigerators where contact with HCFC chemicals, present in foam insulation, is necessary.

Abstract: Optically transparent frosted polymeric articles are disclosed which can be produced in smooth molds. Polymeric articles, such as PVC bottles, are molded from a composition having two polymers with different viscoelastic properties. A particularly desirable composition is one containing both PVC and crosslinked PVC.

Abstract: An internally plasticized polyvinyl halide obtained by the polymerization of a vinyl halide monomer in the presence of a polyester polymeric plasticizer substantially derived from glutaric acid and a diol Articles made therefrom exhibit a unique balance of improved permanence, low plasticizer extraction high clarity and low haze. The polymers are particularly suitable for use in automotive interior parts or containers for blood components or foodstuffs.

Abstract: A process for preparing a particulate vinyl polymer resin and vinyl polymer resin derived therefrom wherein, comprising polymerization in the presence of a dispersant or graft dispersant having no ionic side groups, optionally containing terminal functional groups, said dispersant is derived from repeating units of .alpha.,.beta.-unsaturated ester(s) of acrylic and/or methacrylic acid and having a molecular weight average of from about 500 to about 50,000.

Abstract: A polyvinyl halide ionomer which contains in the polymer backbone at least one vinyl halide monomer in polymerized form or at least one vinyl halide monomer and at least one other monomer copolymerizable with vinyl chloride and less than 50% by weight of the ionomer a comonomer containing at least one ester group and at least one neutralized carboxyl group. The ionomer is prepared by neutralizing, preferably in a molten state, a functionalized vinyl halide copolymer containing pendant carboxyl groups. The ionomer has outstanding adhesion to metals and its glass transition temperature is higher than the carboxyl vinyl halide copolymer.

Abstract: Polyvinyl halide-EVOH polymer compositions exhibiting a reduced tendency to stick to metal surfaces, and in particular, to chrome surfaces are described which comprise(A) at least one vinyl halide polymer;(B) from 1 to about 40% based on the weight of the vinyl halide polymer, of at least one ethylene-vinyl alcohol copolymer; and(C) from about 0.01 to about 5 phr of at least one phenolic antioxidant of the formula ##STR1## wherein R.sub.1 is hydrogen, or a hydroxyl or an alkyl group; R.sub.2 is an alkyl, alkoxy or a carboxylic ester group; and R.sub.3 is a hydroxy or an alkyl group.An improved process for melt blending mixtures comprising vinyl halide polymers and ethylene-vinyl alcohol copolymers on metal-surfaced compounding equipment is described which comprises adding to the mixture prior to melt blending, from about 0.01 to about 5 phr of the phenolic antioxidant described above.

Abstract: Blend compositions are provided comprising first polyvinyl chloride and a second polyvinyl chloride wherein the inherent viscosity (I.V.) of the second polyvinyl chloride, measured in accordance with ASTM1243 is at least about 0.2 units higher than the I.V. of the first polyvinyl chloride. Preferably the I.V. of the second polyvinyl chloride is from 0.2 to 1.0 units higher than the I.V. of said first polyvinyl chloride, with the most preferred difference in I.V. (.DELTA.I.V.) being 0.35 to 0.65 units so as to yield a balance of property improvements including impact resistance, heat distortion temperature, melt flow and melt viscosity. The higher I.V. PVC is present at from 0.1 to less than 20 weight percent of the total PVC content. The compositions also can further comprise melt flow enhancers and/or Tg enhancing agents.