Abstract: Elastomer film is extruded or coextruded against an engraved geometric micropattern roll which forms a geometric pattern of raised intersecting ridges or ribs on the film surface, and subsequently oriented in one or both directions to produce a heat-shrinkable, elastic film which retains its geometric micropattern embossment to an unexpectedly high degree, and which therefore has excellent non-blocking properties, reduced gloss and a satin appearance and feel.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising a polymer of at least ethylene and 2-40 wt % acrylate having a ratio of M.sub.w /M.sub.n less than about 3.5, a ratio of M.sub.z /M.sub.w less than about 3, a melt index of about 0.1-30 dg/min, and a melt index swell ratio less than about 1.6, preferably without a tackifying additive. The film may further comprise a non-cling layer comprising a thermoplastic preferably essentially free of anticling (slip and/or antiblock) additive. Preferred thermoplastic materials include polyethylene and polypropylene.

Abstract: A thermally polymerized hydrogenated hydrocarbon resin and a novel process for hydrogenating a hydrocarbon resin. The resin is a copolymer of a feed which is a mixture of styrene and indene and derivatives thereof and cyclodiene monomers and dimers and optionally acyclic dienes. The process for hydrogenation of hydrocarbon resins is a process in which the resins are hydrogenated in the presence of an olefinic diluent which increases the hydrogenation reaction temperature to improve hydrogenation efficiency. The resin is useful in block copolymer and ethylene-unsaturated ester copolymer adhesive systems.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising (i) a polymer of at least ethylene and acrylate or vinyl acetate, blended with (ii) a compatible, non-migratory tackifier. The film may further comprise a non-cling layer comprising a thermoplastic material essentially free of tackifier, with or without an anticling (slip and/or antiblock) additive. Preferred thermoplastic materials include linear low density polyethylene and polypropylene.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising a polymer of at least ethylene and acrylate, preferably without a tackifying additive. The film further comprises a slip layer comprising a polyolefin preferably including an anticling (slip and/or antiblock) additive. Preferred polyolefins include linear low density polyethylene and polypropylene.

Abstract: A thermoplastic film is provided which is especially suited for use in stretch/cling applications such as, for example, the bundling, packaging and unitizing of foods and other goods. The film comprises a cling layer comprising (i) a non-cling polymer of at least ethylene and acrylate or vinyl acetate, blended with (ii) a compatible, non-migratory tackifier. The film may further comprise a non-cling layer comprising a polyolefin essentially free of tackifier, with or without an anticling (slip and/or antiblock) additive. Preferred polyolefins include linear low density polyethylene and polypropylene.

Abstract: An petroleum resin of improved color and process for making the same are provided. The improvement in color is the result of a "dry" quench process, in which the polymerizate of an olefinic, diolefinic, aromatic or mixed hydrocarbon feedstock polymerized in the presence of a Friedel-Crafts catalyst is quenched by admixing the polyemrizate with a phosphite instead of the familiar water wash quenching procedure.

Abstract: The present invention provides for an anti-static flexible fabric material formed from woven, axially oriented crystalline polypropylene yarn, said fabric further characterized as having a coating of a flexible, thermoplastic polymer on one or both sides of the fabric. Anti-static properties are imparted to the fabric by formulating the thermoplastic coating to contain from about 0.2 to about 8% by weight of a polyol ester (preferably glycerol) of a C.sub.10 to C.sub.28 fatty acid. The polypropylene yarn may optionally itself also contain a lesser amount of the polyol ester of a C.sub.10 to C.sub.28 fatty acid to provide a fabric having even more enhanced anti-static properties. In another embodiment, the polypropylene yarn may additionally have interwoven therewith or in contact therewith at intervals conductive yarns to provide even more enhanced anti-static properties.

Abstract: Certain novel dithiophosphonate derivatives, particularly monoesters, may be prepared inexpensively from hindered phenol compounds and are useful as anti-oxidants for example in lubricants and/or polymer materials.

Abstract: This invention provides new supported catalyst compositions for the polymerization of 1-olefins, together with processes for preparing and using the catalysts. The catalyst compositions include two catalyst components. The first catalyst component is formed by reacting a halogen-containing compound of the formula: H.sub.a M.sup.1 X.sup.1.sub.b R.sup.1.sub.(c-b-a) wherein M.sup.1 is boron, carbon, silicon or mixtures thereof; X.sup.1 is Cl, Br or mixtures thereof; R.sup.1 is a hydrocarbyl or alkoxy radical; with a mixture produced by contacting a finely divided porous inorganic oxide support in an inert solvent with a solution made by combining a magnesium dihydrocarbyloxide dissolved in an inert solvent, and of the formula: Mg(OR.sup.2).sub.2 wherein R.sup.2 is a hydrocarbyl radical, with a transition metal hydrocarbyloxide of the formula: M.sup.2 (OR.sup.3).sub.y wherein M.sup.2 is a transition metal from Group IVB, VB, and VIB of the Periodic Table; and R.sup.3 is a hydrocarbyl radical.

Abstract: A vanadium catalyst component for the polymerization of 1-olefins and a process for making said catalyst component are disclosed. The catalyst component is prepared by fluoriding a support comprising silica. Use of the catalyst component provides a catalyst with increased activity, increased response to hydrogen for chain termination, increased response to comonomer for resin density reduction, and allows the molecular weight distribution of the polymers to be independently controlled by controlling the amount of fluorination and the fluorination temperature.

Abstract: A catalytic component for olefin polymerization, produced by a process which comprises causing (A) magnesium metal, (B) a halogenated hydrocarbon represented by the general formula, RX [wherein R stands for an alkyl group, an aryl group, or a cycloalkyl group each having 1 to 20 carbon atoms and X for a halogen atom], and (C) a compound represented by the general formula, X.sub.n.sup.1 M(OR.sup.1).sub.m-n [wherein X.sup.1 stands for a hydrogen atom, a halogen atom, or a hydrocarbon group having 1 to 20 carbon atoms, M for a boron, carbon, aluminum, silicon, or phorphorus atom, R.sup.1 stands for a hydrocarbon group having 1 to 20 carbon atoms, m for the valency of M, and m>n.gtoreq.

Abstract: A breathable metallized polyolefin film is prepared by: melt embossing a highly filled polyolefin film to impose a pattern of different film thickness therein; stretching the melt embossed film to impart greater permeability in the area of reduced thickness in comparison to the areas of greater thickness; and coating the resulting stretched embossed film with a suitable metal.

Abstract: Synthetic polyethylene wax having low molecular weight of 250 to 3000 and a density of 0.930 to 0.950 is prepared in a high pressure process at pressures of at least 800 bar using a carbonyl compound such as acetaldehyde as chain transfer agent. The resulting wax with incorporated CO has good compatibility in hot melt systems, and may be stripped to remove light ends, increase density and crystallinity and improve thermal stability.

Abstract: This invention provides a process for preparing a heat shrinkable film by extruding a blend of elastomer, hydrocarbon oil and polyolefin to form a film, stretch orienting the film to form a stretched film, annealing the stretched film while still under stress, then cooling while further maintaining stress on the film. This invention further provides a process for preparing an elasticized composite material by attaching strips of the heat shrinkable film to a flexible substrate and then heating the composite.

Abstract: Hot melt adhesives containing petroleum resin tackifiers which are prepared by a process wherein (1) a C.sub.8 -- and/or C.sub.9 aromatic unsaturated hydrocarbon-containing feed (optionally containing up to 18 wt. % of C.sub.4 or C.sub.5 unsaturated aliphatic hydrocarbons) is first polymerized completely and thereafter a C.sub.5 -aliphatic unsaturated hydrocarbon-containing feed is added, polymerization continued and the reactor effluent stripped to obtain the resin. The order of polymerization may be reversed.

Abstract: High density polymers of ethylene are produced in improved yields employing a solid Ziegler type transition metal-containing catalyst component and an organoaluminum cocatalyst in the presence of a small amount of an aliphatic diene having at least 4 carbon atoms and a terminal double bond. The amount of diene is from about 0.01 to about 3000 mole per gram atom of transistion metal in the catalyst component. The catalyst component variously may be pretreated with the diene before using the component for homopolymerization, may be prepolymerized with ethylene in the presence of the diene, may be prereduced in the presence of the diene, or the diene may be added to the polymerization reaction. Preferred dienes are .alpha.-.omega.-dienes.

Abstract: Disclosed is a homogeneous vanadium catalyst composition prepared by the reaction of an alkylaluminum dihalide with a solid reaction product produced by reacting (A) a silicon alkoxide, (B) a hydrocarbon soluble vanadium compound, and (C) a trialkylaluminum. The solid reaction product may be produced by complexing the (A) silicon alkoxide first with either the (B) vanadium compound or the (C) trialkylaluminum. The intermediate complex (I) of such reaction is then treated with the remaining reageant (either the vandium compound or the trialkylaluminum as the case may be) whereupon the solid reaction product (II) is formed. The solid reaction product (II) of the silicon alkoxide-vanadium compound/trialkylaluminum reaction is then reacted with (D) an alkylaluminum dihalide to produce a homogeneous hydrocarbon soluble product (III) which is highly active for catalyzing the polymerization of olefines to a polyolefin having a narrow molecular weight distribution.

Abstract: The invention provides a food wrap film containing a layer of a composition containing:from 20 to 50 wt % of LLDPE;from 1 to 10 wt % of an elastomeric polymer;from 40 to 79 wt % of a copolymer of ethylene and an ethylenically unsaturated ester;the weight percentages being calculated on the total polymer weight; and said film containinga minor amount of additives to provide, in combination with polymer components, an antifogging and antiblocking effect such that the film is transparent and has a controlled amount of residual cling.

Abstract: The present invention is directed to an apparatus and method useful for inducing blocking in plastic film samples under known laboratory conditions. The test device of the present invention comprises a base platen and a movable platen disposed for cooperation to engage and apply a known, preferably multiplied, compressive force to a plurality of plastic samples. The compressive force is transferred to the movable platen through a thrust member from a lever arm pivotable about a pivot, preferably a hinge, above the base platen. Along the lever arm are disposed a plurality of weight receiving locations for engagement by a hanger supporting one or more selected weights. The test device of the present invention permits higher compressive forces to be applied to plastic test samples under laboratory conditions without requiring the use of heavier weights and produces more reproducible compressive forces than prior art methods.