Abstract: The use of organic solvent-based coating compositions in the preparation of coated steel feedstock for use in the manufacture of draw-redraw food and beverage cans is eliminated by using as such can feedstock a laminated or extrusion coated steel sheet (e.g., such as electrolytic chrome/chrome oxide coated steel) having adhered to both major planar surfaces thereof an irradiated multilayered synthetic thermoplastic resin coating comprising:(1) an adhesive synthetic thermoplastic resin inner layer which is composed of at least a major proportion of a normally solid random copolymer of ethylene with from about 1 to about 30 weight percent, based upon the weight of such copolymer, of an ethylenically unsaturated carboxylic acid monomer and which is bonded directly to the surface of said steel sheet and(2) an outer layer of a synthetic thermoplastic polymer resin which has a crystalline melting point of at least about 250.degree. F. and which is adhered to said adhesive resin inner layer.

Abstract: The use of organic solvent-based coating compositions in the preparation of plastic coated steel feedstock for use in the manufacture of retortable draw-redraw food and beverage cans is substantially reduced or eliminated by using as such can feedstock a laminated or extrusion coated steel sheet having adhered to at least one, and preferably to both, major planar surface(s) thereof a layer of an adhesive synthetic thermoplastic resin composition having a crystalline melting point of at least about 250.degree. F. and comprising graft copolymer of high density polyethylene with an ethylenically unsaturated carboxylic acid monomer.

Abstract: An improved foamable vinyl aromatic polymer composition and a process for preparing a vinyl aromatic polymer foam having incorporated therein a blend of alpha-olefin polymers are disclosed. The blend of alpha-olefin polymers may be virgin material or a portion of recycle feedstream, the recycle feedstream being prepared from adhesive film faced extruded vinyl aromatic foam laminate scrap. Foam materials having improved solvent resistance, ultraviolet light stability, and adhesive characteristics are prepared from the composition and process.

Abstract: A process for preparing, in aqueous emulsion, controlled interpolymer compositions. The interpolymer compositions have polymerized therein from about 86 to 92 mole percent, vinylidene chloride, from about 14 to 8 mole percent of a comonomer mixture of methyl methacrylate and a comonomer selected from the group consisting of acrylonitrile, methacrylic acid and methacrylonitrile in a ratio of the comonomer to methyl methacrylate of from about 0.5:1 to 2:1, and from about 0.5 to 1.0 weight percent itaconic acid, based on weight of vinylidene chloride plus comonomer mixture. The interpolymers are prepared in a three step process. The third step, or Step III, wherein monomer feeding is step-wise reduced for a portion of the step and a polymerization initiator is added at generally the same constant rate as the rate of addition in Steps I and II, generally reduces the amount of unreacted mixed monomers remaining after monomer addition is completed.

Abstract: The use of organic solvent-based coating compositions in the preparation of coated steel feedstock for use in the manufacture of retortable draw-redraw food and beverage cans is eliminated (A) by using as such can feedstock a laminated or extrusion coated steel sheet comprising a steel sheet material (e.g., such as electrolytic chrome/chrome oxide coated steel) having adhered to both major planar surfaces thereof a multilayered synthetic thermoplastic resin coating comprising (1) an adhesive synthetic thermoplastic resin inner layer (e.g., such as a layer of a normally solid random ethylene/acrylic acid copolymer) bonded directly to the surface of said steel sheet material and (2) an outer layer of a synthetic thermoplastic polymer resin which has a crystalline melting point of at least about 250.degree. F.

Abstract: Plastic/metal laminates (such as, for example, plastic coated cable shielding or armoring tapes) having improved high and/or low temperature adhesion to various olefin polymer substrates (such as, for example, cable jacketing resins) are provided which comprise at least one metallic substrate having directly adhered to at least one surface thereof a first thermoplastic polymer layer of a random copolymer of ethylene with an ethylenically unsaturated carboxylic acid monomer and having adhered to said first polymer layer a second thermoplastic polymer layer comprising a polymer blend of (a) either the same or a different random copolymer of ethylene with an ethylenically unsaturated carboxylic acid as used in said first polymer layer and (b) at least one different ethylenic olefin polymer resin which is not a random ethylene/unsaturated carboxylic acid copolymer.

Abstract: An aqueous dispersion of a vinylidene chloride resin which, when coated onto a synthetic resinous film substrate, has the combined properties of: (1) good adhesion to the substrate; (2) good adhesion of a printing ink to the coating; (3) satisfactory barrier to gases (especially oxygen) and water vapor; and (4) a high resistance to a boiling water treatment. The dispersion must also contain an unsaturated carboxylic acid in an amount of from about 0.5.times.10.sup.-4 to about 4.times.10.sup.-4 mol of unsaturated carboxylic acid units per gram of solids in the dispersion. The unsaturated carboxylic acid must have a partition coefficient of greater than or equal to 1. A limited portion of the amount of the unsaturated carboxylic acid is contained in the aqueous phase. The remaining unsaturated carboxylic acid is polymerized with the vinylidene chloride.

Abstract: Amorphous, chlorinated ethylene polymers which have relatively low blocking tendencies in the absence of antiblock additives are prepared in a multi-step process. The process involves reacting porous, solid, finely divided, high density polyethylene particles with gaseous chlorine in the presence of a free radical initiator while said particles are agitated or maintained in a fluidized bed state. In a first step, addition of gaseous chlorine is started while the agitated particles are at a temperature of less than about 50.degree. Centigrade. Little, if any, chlorination takes place in the first step. In a second step, the agitated particles are chlorinated to a level of from about 5 to about 14 percent while the temperature of said particles is increased to a temperature within a temperature range of from about 50.degree. Centrigrade to about 105.degree. Centigrade.

Abstract: An apparatus for longitudinally slitting moving webs of material. The apparatus provides for adjustment of cutting blade engagement with a moving web during slitting. The apparatus also provides for a consistent blade cutting angle as well as for increased use of a blade cutting edge. Further, the apparatus markedly reduces operator exposure to blade cutting edges.

Abstract: Improved stability is imparted to suspension and emulsion polymerized dry particulate vinylidene chloride resin by adding thereto a dispersion of an oil insoluble inorganic particulate stabilizing additive in a liquid plasticizer/stabilizer medium with sufficient mixing to ensure generally uniform distribution of the dispersion onto the resin particles. Optionally, a hindered phenol may be incorporated into the dispersion.

Abstract: An emulsion polymerized vinylidene chloride copolymer latex having polymerized therein vinylidene chloride and one or more ethylenically unsaturated monomers copolymerizable therewith. The latex contains both an anionic and a nonionic surfactant. The latex remains stable following addition of about 2 percent by weight of a cationic antistatic agent on a polymer solids basis.

Abstract: Stable isocyanurate foams are produced at rapid reaction rates by contacting an organic polyisocyanate with an active hydrogen compound such as a polyether polyol in the presence of an initiator comprising an ortho-sulfonium phenoxide and a carbonylate salt such as sodium acetate.

Abstract: An improved process for preparing extruded films from film-forming polymeric compositions based on vinylidene chloride copolymers and containing one or more inorganic particulate additives and to the films so prepared. The improvement comprises first preparing a preblend of the inorganic particulate additives and an alkali metal salt of an alkylaryl sulfonic acid and, then making an admixture of the preblend and the vinylidene chloride copolymers. The admixture so prepared is then formed into an extruded film by conventional techniques.

Abstract: An improved process for adding magnesium oxide to polymeric compositions based on vinylidene chloride copolymers. The improvement comprises forming a pre-mixture of the magnesium oxide and an ethylene-vinylalkanoate dispersing medium or agent and thereafter blending an amount of the pre-mixture with the vinylidene chloride copolymer composition.

Abstract: An aqueous dispersion of a vinylidene chloride copolymer resin which, when coated onto a synthetic resinous film substrate, has the combined properties of: (1) good adhesion to the substrate; (2) good adhesion of a printing ink to the coating; (3) excellent barrier to gases (especially oxygen) and water vapor; and (4) a high resistance to a boiling water treatment. The dispersion must contain methacrylic acid in an amount of from about 1.times.10.sup.-4 to about 3.times.10.sup.-4 moles per gram of polymer solids content. The dispersion must also have a molar ratio of acrylonitrile to methyl methacrylate of from about 0 to 1 to about 1 to 1. A limited portion of the amount of methacrylic acid is contained in the aqueous phase. The remaining amount of methacrylic acid is polymerized with the vinylidene chloride.

Abstract: An easily processable, dimensionally stable laminate film structures which are particularly adopted for use in lining ponds, pits, dams and canals and other systems employed for water handling. More particularly, it is directed to laminate film structures comprising, in generally planar coextensive relationship, (A) a first outer layer of substantially linear chlorinated polyethylene containing from about 25 to about 50 weight percent of chemically combined chlorine, (B) an internal layer of substantially linear chlorinated polyethylene containing from about 5 to about 15 percent by weight of chemically combined chlorine, and (C) a second outer layer of the nature of the first outer layer which second outer layer is disposed adjacent the internal layer and remote from the first outer layer, the first and second outer layers being substantially amorphous and the internal layer being substantially crystalline.

Abstract: An improved apparatus for evaluating the practical impact resistance of synthetic resinous products employing a pneumatically operated apparatus for repeatedly raising and dropping an impact hammer against an impact member which is oriented generally normal to a synthetic resinous product sample which, in turn, is maintained in a generally fixed position with respect to the impact member so that the impact energy which results when the impact hammer strikes the impact member impacts with the sample at generally the same point with each repetition, said impact energy being of a magnitude such that there is substantially no rebounding of the impact member from the synthetic resinous product sample.

Abstract: An improved dispensing carton for dispensing materials, such as polymeric films, which are commonly supplied in roll form. The carton type is known to those skilled in the art as a "trunk lid" style carton.

Abstract: A process for imparting heat and light stability to vinylidene chloride copolymer resins by adding thereto small amounts of Vitamin E, an alkyl ester of thiodipropionic acid having 12 to 18 carbon atoms in an alkyl group thereof and an alkali metal salt or an alkali earth metal salt of a phosphoric acid.

Abstract: Scorch safety and shelf-life of a heat-curable composition including a chlorine- or bromine-containing halopolymer such as chlorinated polyethylene; a 1,3-diaminopropane or salt thereof; a sulfur source; and an acid acceptor are improved by adding N-(cyclohexylthio)phthalimide and N-nitrosodiphenylamine to the composition.