Abstract: A propylene random copolymer composition which contains a mixture of 0.05-2.7% by weight of a crystalline propylene homopolymer (A) and 97.3-99.95% by weight of a random copolymer (B) of propylene and at least one .alpha.-olefin other than propylene which copolymer has a bound propylene content of 40-85% by weight and a Mw/Mn of not more than 5.5 meets both of the two mutually conflicting requirements of further improving the transparency inherent to polypropylene sheet and film, and attaining excellent solvent resistance.

Abstract: A thermoplastic basic polymers in pourable form are mixed with similarly pourable carrier polymers dispersable or soluble in the basic polymers with a cross-linking agent to produce cross-linked polymer moldings. These mutually compatible components are heated under further mixing to a reaction temperature above the melting range of the basic polymer and processed. The reaction of free radicals leads to bonds between polymer chains and/or the degradation of polymer chains.Porous carrier polymers which contain at least one organic peroxide and/or coagent incorporated in the fine pore structure as a fluid silane-free cross-linking agent are mixed in the basic polymer. Peroxide-containing carrier polymers are heated, coagent-containing carrier polymers are irradiated.The moldings are used for example for cable and sheath isolation, pipes for hot water lines and highly stressed injection moldings.

Abstract: A novel, pumpable, thermoplastic desiccated mastic capable of desiccating a sealed insulating glass unit. The compositions utilize adhesive materials which have a low vapor transmission rate but, nevertheless, have been found to effectively dry the air space in the unit. They do not contribute to chemical fogging and, in preferred embodiments, reduce or eliminate chemical fogging caused by other structures in the assembly. The compositions adhere well to the U-channel material and do not flow or sag under the normal range of service conditions encountered by an insulating glass assembly.

Abstract: This invention relates to a ternary blend of 25 to 45 wt. % random polypropylene copolymer, 20 to 40 wt. % ethylene propylene rubber and 30 to 45 wt. % high density polyethylene having excellent low temperature impact resistance and useful for producing molded articles.

Abstract: Provided are resin compositions comprising the following (A), (B), (C), which is at least one member selected from (C.sub.1) through (C.sub.3) and (D):(A): a polyolefin,(B): a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 65 mol % and a saponification degree of vinyl acetate component of at least 96%,(C): (C.sub.1): at least one inorganic substance selected from titanium oxide, talc, calcium carbonate, mica and absorptive inorganic materials,(C.sub.2): at least one compound selected from the group consisting of metal salts of higher fatty acid having 8 to 22 carbon atoms, metal salts of ethylenediaminetetraacetic acid and hydrotalcite, and(C.sub.3): a polyolefin modified with an unsaturated carboxylic acid or derivatives thereof;and,(D): a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 68 to 98 mol % and a saponification degree of vinyl acetate component of at least 20%.

Abstract: Improved polymer compositions, useful in the manufacture of closures and as liners for reclosable container closures, comprising blends of semicrystalline poly(1-butene), ethylene-methylene acrylate, polypropylene random copolymer, wherein the polypropylene random copolymer and the ethylene methyl acrylate can be used singularly or in combination, a lubricating agent and optionally, low density polyethylene. The inventive polymer compositions are recyclable, and do not present the environmental, health, and odor problems associated with polymer liners known in the art.

Abstract: A self-lubricating composition containing at least about 70 to about 99.5 weight percent of a thermoplastic polymer and from about 30 to about 0.5 weight percent of a lubricating system, wherein the lubrication system contains high and low molecular weight polyethylenes, polyethylene waxes, metal salts, antioxidants and stabilizers. The composition is suitable for the fabrication of shaped articles, e.g., gears, pulleys, rollers and bearings, which exhibit improved friction and surface wear properties.

Abstract: Blended polymer compositions are disclosed comprising an admixture of (a) a copolymer of ethylene and an alphaolefin and (b) an amorphous polypropylene, and/or amorphous polyolefin, or mixtures thereof.

Abstract: A solid coating composition based on a polyolefin containing a filler is disclosed. The polyolefin is partly or completely reacted with either an unsaturated organic acid or an unsaturated organic acid anhydride.

Abstract: A polyolefin-based matte film or sheet can be prepared from a polymeric blend of the preset invention comprising a propylene polymer or copolymer as component (A), a specific ethylene-.alpha.-olefin copolymer (E.alpha.O, so-called "super low-density polyethylene") as component (B), and a high-pressure radical polymerization process ethylene polymer or copolymer and/or a modified polyolefin-based resin as component (C). The above blend of the present invention may further comprise an inorganic filler as component (D) and a flame retardant as component (E). The matte films or sheets prepared from these polymeric blends are excellent in tensile modulus, flexibility, impact resistance, thermal resistance, laminating properties, flame resistance, chalking resistance, covering power, scratch resistance, and widely used for fabricating adhesive tapes, covers or cases for stationery, fashion bags, sheets for interior finish work in construction and automobile industries, and sheets for dressing steel plates.

Abstract: The method of producing plasticized polyvinyl alcohol by mixing polyvinyl alcohol in the presence of an organic plasticizer and water in a quantity which is insufficient to dissolve the polyvinyl alcohol under normal conditions, includes the steps of:i) pre-plasticizing the polyvinyl alcohol at a maximum temperature no higher than its softening point so as to produce a pre-plasticized polyvinyl alcohol having a melting point below the softening point of the polyvinyl alcohol used, andii) further processing the pre-plasticized polyvinyl alcohol thus produced at a temperature above its melting point, under shear-stress conditions and for a period of time to produce a substantially homogeneous melt.

Abstract: Disclosed are polyolefin compositionshaving high balance of stiffness and impact strength, which comprise (percentage by weight):A) 30%-60% of a propylene homopolymer or copolymer;B) 14%-30% of a fraction comprising copolymers of propylene with ethylene;C) 10%-25% of a copolymer of ethylene with a C.sub.3 -C.sub.8 .alpha.-olefin;D) 5%-45% of a mineral filler.

Abstract: A laminate comprising a substrate, a continuous layer of a release coating on one surface thereof, and a layer of a silicone pressure sensitive adhesive on the surface of said release coating, said release coating being a mixture of a resin having perfluoro side chains and a film forming resin which binds said resin having said perfluoro side chains to said substrate, wherein said film forming resin is selected from the group consisting of polyester, polyamides, functionalized polyolefins, and nitrile polymers and copolymers.

Abstract: A blend and a process for producing that blend in which a high ethylene content ethylene-propylene polymer and a lower ethylene content ethylene-propylene polymer are subjected to simultaneous blending and shearing to reduce their molecular weights and molecular weight distribution and to yield a product that can be recovered as a solid using conventional plastic processing equipment. The sheared blend of polymers can function as a shear stable viscosity index improver with improved lower temperature properties.

Abstract: A resin composition having excellent paint coatability containing (a) 50-80 weight % of a multi-stage polymerized propylene-ethylene block copolymer consisting essentially of (i) a propylene homopolymer portion, (ii) a propylene-ethylene random copolymer portion, and (iii) an ethylene homopolymer portion, (b) 20-40 weight % of an ethylene-.alpha.-olefin copolymer elastomer, and (c) 20 weight % or less of an inorganic filler, components in the components (a) and (b), which are soluble in p-xylene at a room temperature, having a number-average molecular weight of 4.times.10.sup.4 or more and a weight-average molecular weight of 20.times.10.sup.4 or more.

Abstract: A masterbatch composition for thermoplastic resin modification containing a polybutene and an ethylene-.alpha.-olefin copolymer obtained by copolymerizing ethylene with .alpha.-olefin in the presence of specific catalysts and characterized by specific properties, and a method for preparing the composition by kneading and extrusion at a temperature ranging from the maximum peak temperature (Tm) to (Tm-45).degree. C. in accordance with differential scanning calorimetry of the copolymer are disclosed.Masterbatch pellets for thermoplastic resin modification having low surface tackiness can be obtained from the composition.

Abstract: There is disclosed an ethylene polymer composition including a low density ethylene polymer blended with from about 2.0% by weight to about 60.0% by weight of the total composition of a recycled high density ethylene polymer and a compatibilizer comprising from about 0.1% to about 1.5% by weight zinc oxide and about 0.1% to 2.0% by weight of glycerol monostearate. The polymer composition may also include a foaming agent is present in an amount from 5 to 30 parts per hundred. There is also provided a method for producing the ethylene polymer compositions.

Abstract: Solution of UHMWPE in an organic solvent having a total PE concentration of at least 15% by weight and in which some of the PE present is crosslinked.

Abstract: A process of producing an aqueous solution of a sulfonated melamine-formaldehyde resin. The process comprises condensing melamine and formaldehyde or a precursor of formaldehyde (e.g. paraformaldehyde) in an aqueous mixture having a pH in the range of 8-10 to form a reaction mixture containing a condensation product of melamine and formaldehyde. The condensation product is then reacted in an aqueous mixture having a pH of 8-10, preferably 8-9, with a sulfonating agent to produce a mixture containing a sulfonated condensation product. Finally, polymerizing the said sulfonated condensation product in an aqueous mixture having a pH of 5-7 to form a resin solution. In the process, at least one of the sulfonation step and the polymerizing step is carried out under superatmospheric pressure (generally 5 to 70 p.s.i.) and at an elevated temperature of, in the case of the sulfonating step, 100.degree.-130.degree. C. for a time of 1 to 5 hours or of, in the case of the polymerizing step, 105-150.degree. C.

Abstract: A bow-tie tree resistant electrical insulating composition comprises 100 parts by weight of at least one polymer selected from polyolefins and ethylene copolymers, 0.005-1.0 part by weight of a metal salt of a fatty acid containing a hydroxyl group in the molecule, and 0.005-1.0 part by weight of a fatty acid or a derivative thereof.

Abstract: A polymer composition substantially comprising(A) 5 to 40 weight parts of a 1-butenic polymer,(B) 95 to 60 weight parts of an inorganic filler,(C) a hydrocarbonic oil in an amount of 2 to 20 weight parts per 100 weight parts in total of the above (A) and (B), and(D) a thermoplastic resin other than 1-butenic polymers in an amount of 0 to 20 weight parts per 100 weight parts in total of the above (A) and (B).

Abstract: A process and coated vessel for use in the prevention of scale adhesion during the polymerization of a monomer having an ethylenic double bond, the two part coating comprising an N-substituted leucophenothiazine dye having the general formula (I): wherein Z is a carbonyl group or a sulfonyl group, R.sup.1, R.sup.2 and R.sup.3 are a hydrogen atom, alkyl group, an amino group, etc., used in conjunction with a vinyl pyrrolidone polymer. The two part coating is used on the inner wall, etc. of a polymerization vessel. Deposition of polymer scale can be effectively prevented, and polymeric product with high whiteness is obtained.

Abstract: Blended polymer compositions are disclosed comprising an admixture of (a) a copolymer of ethylene and an alphaolefin and (b) an amorphous polypropylene, and/or amorphous polyolefin, or mixtures thereof.

Abstract: Provided are resin compositions comprising the following (A), (B), (C), which is at least one member selected from (C.sub.1) through (C.sub.3), and (D):(A): a polyolefin,(B): a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 20 to 65 mol % and a saponification degree of vinyl acetate component of at least 96%,(C):(C.sub.1): at least one inorganic substance selected from titanium oxide, talc, calcium carbonate, mica and absorptive inorganic materials,(C.sub.2): at least one compound selected from the group consisting of metal salts of higher fatty acid having 8 to 22 carbon atoms, metal salts of ethylenediaminetetraacetic acid and hydrotalcite, and(C.sub.3): a polyolefin modified with an unsaturated carboxylic acid or derivatives thereof;and,(D): a saponified product of an ethylene-vinyl acetate copolymer having an ethylene content of 68 to 98 mol % and a saponification degree of vinyl acetate-component of at least 20%.

Abstract: A rooftop curable heat seamable sheet material for roofing prepared from an uncured polymeric composition of matter which comprises 100 parts by weight of a polymer blend comprising from about 10 to 95 parts by weight of an polymer selected from the group consisting of polyolefins having up to about 2 percent by weight crystallinity, which polyolefins are prepared from monomers having at least 2 carbon atoms, and mixtures thereof; from about 5 to 90 parts by weight of a crystallinity enhancing polymer and mixtures thereof; from about 20 to 300 parts by weight of a filler selected from the group consisting of reinforcing and non-reinforcing materials and mixtures thereof per 100 parts of the polymer blend; from about 1.5 to 10 parts by weight of a cure package a cure package capable of allowing the composition of matter to cure at temperatures of at least 50.degree. C.

Abstract: The present invention relates to a process for preparing elastomeric thermoplastic blends which comprises the following steps:a) mastication of a blend which comprises a polyolefin elastomer, polyolefin thermoplastic resin and a vulcanizing agent;b) mastication of a blend which comprises the product obtained in step (a), a polyolefin thermoplastic resin and vulcanizing agent.

Abstract: The present invention provides for a polymer composition comprising a blend of from about 25 to about 90% by weight of a very low density ethylene polymer having a density on the range of from about 0.88 to 0.925 g/cm.sup.3, a melt index of from about 0.5 to about 7.5 dg/min, a molecular weight distribution not greater than about 3.5 and a compositional distribution breadth index greater than about 70%, and from about 10 to about 75% by weight of a low to medium density ethylene polymer having a density of from about 0.910 to about 0.935, a melt index of from about 0.5 to about 20, a molecular weight distribution greater than about 3.5 and a compositional breadth index less than about 70%.The invention also provides for films prepared from this blend having single layer construction or having laminar ABA construction wherein the A or skin layers comprise the blend of this invention and the B or core layer comprises a different olefin polymer such as high density polyethylene.

Abstract: A radiation resistant resin suitable for the manufacture of, for example, disposable medical supplies comprises a semicrystalline polypropylene or propylene-ethylene and from 1500 to 5000 ppm triallyl trimellitate. The resin exhibits substantially no increase in melt flow rate after irradiation to a dosage of up to 5 Mrads, and may contain up to about 5% by weight of a polybutylene and/or up to about 3000 ppm of a sorbital based clarifying agent.

Abstract: Disclosed is a propylene polymer composition consisting essentially of (A) a propylene polymer resin and (B) from 0.05 to 0.2 parts of a normally solid, high molecular weight, gel-free, propylene polymer material having (1) a branching index of less than 1 and significant strain hardening elongational viscosity, or (2) at least (a) either z-average molecular weight M.sub.z of at least 1.0.times.10.sup.6 or a ratio of the z-average molecular weight M.sub.z to weight average molecular weight M.sub.w, M.sub.z /M.sub.w, of at least 3.0 and (b) either equilibrium compliance J.sub.eo of at least 12.times.10.sup.-5 cm.sup.2 /dyne or recoverable shear strain per unit stress Sr/S of at least 5.times.10.sup.-5 cm.sup.2 /dyne at 1 sec.sup.-1.

Abstract: It is disclosed a polyolefin blend having an exhibiting improved processability and mechanical properties comprising of a major amount of a high molecular weight or low melt flow polyolefin, and minor amounts of a high melt flow polyolefin and an ordinary melt flow polyolefin copolymer. The improvement in processability, optical, and mechanical properties is synergistic, and is particularly evident by the improvement in output rate and dart drop impact strength.

Abstract: Disclosed are polyolefin compositions comprising (A) a propylene homopolymer or a crystalline copolymer of propylene and ethylene or a C.sub.4-8 alpha-olefin, (B) an olefin polymer composition, and optionally either, (C) a propylene polymer composition or (D) an olefin polymer rubber.

Abstract: A flame retarded composition for wire insulations that includes a polyethylene blend having a high density polyethylene, in an amount from about 50 to about 95 parts per hundred, and a very low density polyethylene, in an amount from about 5 to about 50 parts per hundred, a primary brominated flame retardant, in an amount from about 30 to about 40 parts per hundred, a secondary chlorinated flame retardant, in an amount from about 5 to about 15 parts per hundred, a first flame retarding synergist, in an amount from about 12 to 20 parts per hundred, a second flame retarding synergist, in an amount from about 7 to about 11 parts per hundred, a first hindered phenolic stabilizer, in an amount from about 0.05 to about 0.30 parts per hundred, and a second hundred phenolic stabilizer, in an amount from about 0 to about 0.30 parts per hundred, a polypropylene polymer in an amount from 2 to 10 parts per hundred.

Abstract: A composition of matter comprises 100-800 parts by weight polyethylenes and copolymers thereof having a melt index of 1-4 g/10 min., a density of 0.93-0.95 g/cc and a weight average molecular weight of 5-1.0.times.10.sup.5 ; 100-400 parts by weight polyethylenes having a melt index of 2-4 g/10 min., a density of 0.93-0.95 g/cc and a molecular weight of 6-20.times.10.sup.4 ; 0-100 parts by weight polypropylene having a melt index of 5-9 g/10 min. and a density of 0.8-1.2 g/cc; 0-150 parts by weight copolymer such as ethylene-propylene or ethylene-vinyl acetate; 0-100 parts by weight graphite or carbon black; 0.04-0.2 parts by weight antioxidant; and 0.1-2.0 parts by weight light stabilizer. A sealant is obtained by compression, extrusion or injection molding the composition described above. A polyethylene surface repair or reinforcing kit comprises the sealant or thermoplastic repair material of the invention, a thin, heat-resistant, adhesion-resistant barrier, and a polyethylene surface enzyme cleaner.

Abstract: Process for controlling the photodegradation of a film of polypropylene or propylene copolymers having a thickness of about 1.25 mils or less, by forming a composition comprising carbon black as the sole UV light absorbing staiblizer and comprising about 0.5% to about 2.4% by weight of the film, hindered amine light stabilizer for interrupting the free radical chain degradation mechanism and comprising about 0.02% to about 0.4% by weight of the film; and an impact modifier for enhancing the photodegradability of the film and comprising about 1% to 40% by weight of the film.

Abstract: A polypropylene composition comprising 100 parts by weight of a crystalline propylene polymer having a melt flow rate of at least 3.0 g/10 minutes and a molecular weight distribution of less than 5.0 and from 0.01 to less than 4.0 parts by weight of a crystalline ethylene polymer having a melt flow rate of from 0.5 to 300 g/10 minutes, a density of at least 0.910 g/cm.sup.3, and a crystallization temperature of at least 85.degree. C. and which is at least 1.degree. C. higher than the crystallization temperature of the crystalline propylene polymer.

Abstract: The process, which makes it possible to reduce the adhesive nature of a partially crystalline copolymer (E) of ethylene and at least one alpha-olefin with a density of between 0.865 and 0.900 approximately, and to increase its resistance to crushing, consists in mixing closely said ethylene copolymer with at least one non-atactic propylene polymer (P) with a fluidity index (measured according to the ASTM D 1238 standard, condition L) between 35 and 200 dg/min. approximately, in a proportion of between 22 to 50 parts by weight approximately for 100 parts by weight of ethylene copolymer.

Abstract: A coated molded article having good adhesion to a coating film and resistance to gasohol as well as excellent appearance can be obtained by applying a primer coating to the surface of a molded article or irradiating the surface with plasma without applying any washing-treatment with a halogen atom-containing organic solvent and then applying a top coat onto the article, if the molded article is formed from a resin composition comprising (A)a polypropylene; (B)a specific ethylene-propylene-diene terpolymer rubber; (C) a specific ethylene-propylene copolymer rubber; and (D) a specific polyhydroxypolyolefin, the amounts of these components (A) to (D) satisfying the following relations:10.ltoreq.[(B)+(C)]/[(A)+(B)+(C)].ltoreq.60 (% by weight)1.ltoreq.(C)/[(B)+(C)].ltoreq.50 (% by weight)0.5.ltoreq.(D)/[(A)+(B)+(C)+(D)].ltoreq.

Abstract: A partially crosslinked thermoplastic elastomer composition having an excellent heat-bondability is obtained by dynamically heat-treating a peroxide-crosslinking olefin copolymer rubber with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide.

Abstract: A partially crosslinked thermoplastic resin composition is prepared by dynamically heat-treating a thermoplastic resin (A) in the presence of a carbon radical inducing agent (B) comprising a charge transfer complex or a combination of a hydrogen donating compound and a hydrogen accepting compound.

Abstract: Proposed herein is a process for preparing thermoplastic elastomers, which comprises dynamically heat treating polymer particles together with a crosslinking agent, each of the polymer particles being composed of a portion comprising a crystalline olefin polymer and portions comprising an amorphous olefin polymer, the polymer particles having an average particle diameter of at least 10 .mu.m and an apparent bulk density of at least 0.2 g/ml.

Abstract: Cold-stretched products comprising a propylene-based resin composition obtained by mixing(A) a polymer consisting mainly of propylene units, in a proportion of not more than 92% by weight and not less than 50% by weight,(B) a polymer consisting mainly of butene-1 units or an ethylene-.alpha.-olefin copolymer having a softening point of 95.degree. C. or lower, in a proportion of not more than 47% by weight and not less than 5% by weight,(C) a tackifier in a proportion of not more than 25% by weight and not less than 3% by weight, the sum of the proportions being 100% by weight; and a process for producing said cold-stretched products.

Abstract: This invention relates to a ternary blend of 20 to 50 wt. % of random propylene copolymer of approximately 2% ethylene, 10 to 40 wt. % ethylene/propylene rubber, and 20 to 50 wt. % high density polyethylene for use as a molded article.

Abstract: A chlorosulfonated or chlorinated polyethylene dispersed in a polyolefin, vulcanized and then the vulcanizate dispersed into a thermoplastic chlorosulfonated or chlorinated polyethylene forming a partially crosslinked thermoplastic chlorosulfonated or chlorinated polyethylene vulcanizate having good interply adhesion, hot weld strength, commercial processability, and crack resistance.

Abstract: It is herein provided a polymer blend comprising of polybutylene and a functionalized polyolefin such as maleated polypropylene. The blend has and exhibits an unexpectedly high degree of adhesion to polar polymers and metal surfaces, and enhances the use of polybutylene in applications for which adhesion to polar surfaces is required.

Abstract: A heat seal material having a plurality of resin surfaces which are positioned face to face and can be heat-fused together, at least one of the resin surfaces being formed of a resin composition comprising(A) 30 to 85% by weight of low-density polyethylene having a density of 0.91 to 0.94 g/cm.sup.3 and a crystallinity of more than 40%,(B) 5 to 40% by weight of polypropylene, and(C) 10 to 40% by weight of a low-crystalline or substantially amorphous ethylene/alpha-olefin copolymer.

Abstract: In the static dissipative resin composition of the present invention, fundamentally, at least semiconductor fillers are dispersed in a resin and at least a part of the semiconductor fillers are brought into electrical contact with each other, thereby forming a conductive path. The .alpha. value representing the degree of the nonlinearity of the V-i characteristics at the contact between the semiconductor fillers should be 2-150, and the volume resistivity of the semiconductor filler is desirably 10.sup.5 -10.sup.10 .OMEGA..cm, whereby on the employment of a conductive filler or a solid lubricant together with the semiconductor filler, various physical properties of the resin composition are improved.

Abstract: The present invention provides a polypropylene film having high transparency and heat-sealability and superior in the balance between stiffness (tensile modulus) and impact resistance which polypropylene film comprises a) 80-99.5% by weight of a propylene polymer and b) 0.5-20% by weight of an ethylene/.alpha.-olefin copolymer prepared by the copolymerization of ethylene and an .alpha.-olefin having a 3 to 12 carbon atoms, said ethylene/.alpha.-olefin copolymer satisfying the following conditions (i) to (iii):(i) a density of 0.860 to 0.910 g/cm.sup.3 ;(ii) a maximum peak temperature of not lower than 100.degree. C. as measured by differential scanning calorimetry (DSC); and(iii) an insolubles content in boiling n-hexane of not lower than 10% by weight.

Abstract: Composition comprising a mixture from 20 to 70 parts by weight of polynorbornene, from 80 to 30 parts by weight of crystalline polyolefine and a quantity of plastifier for the polynorbornene sufficient to lower its glass transition temperature down to the range of rubbers, characterized in that, a copolymer of ethylene and at least one .alpha.-olefine having from 3 to 10 carbon atoms is used as crystalline polyolefine, said copolymer having a density between 0.89 and 0.93, a crystallinity ratio between 15 and 50% and a fluidity index between 0.5 and 15 dg/min. Such compositions are used to fabricate finished products and industrial articles by using the techniques of extrusion, injection moulding and compression moulding. Particular applications are flexible pipes, joints for the building and car industries, protection bellows for the car industry, injected articles.

Abstract: The invention relates to novel blend compositions comprising a linear low density copolymer of ethylene and a minor amount of an olefin containing 4 to 10 carbon atoms (LLDPE), and to films of improved properties formed from such compositions. The invention includes a process of forming blown films from such compositions which is accomplished with improved processability and at least substantial retention of the desirable properties of the linear low density polyethylene. The invention also includes a waste bag formed from such blown film products.

Abstract: A premixture composition for the production of water-resistant photographic support material coated with polyolefin resin for light-sensitive materials of polyolefin resin and light-reflecting white pigment comprises a polyolefin resin formed as a copolymer of ethylene and an .alpha.-olefin. A light-reflecting white pigment is intimately mixed with the said polyolefin resin. Hydrocarbon side chains derived of an .alpha.-olefin in the copolymer comprise C.sub.1 to C.sub.16 carbon atoms. The contents of the copolymer of ethylene and .alpha.-olefin in the premixture composition amounts to from about 10 weight-percent to 100 weight-percent of the complete premixture composition. The light-reflecting white pigment is titanium dioxide. The titanium dioxide employed in the mixture has been subjected to a chemical after-treatment.