Abstract: Embodiments relate a method for processing recyclable polymer material. The method may include grinding the recyclable polymer material to produce polymer flake material, washing the polymer flake material, removing contaminants from the polymer flake material with a flake sorter, and removing lightweight materials from the polymer flake material with an elutriator. The method may also include extruding the polymer flake material with a virgin to form an extruded polymer blend, degassing the extruded polymer blend, filtering the extruded polymer blend, and pelletizing the polymer blend. The method may also include passing the polymer blend through a silo with a homogenizer system equipped with hot air insufflation.

Abstract: A polyethylene-based resin composition for injection stretch blow molding may include a copolymer of ethylene and one or more C4-C8 ?-olefins. The composition may have a density, according to ASTM D792, that ranges from about 0.946 to 0.960 g/cm3 and a melt index (15), as measured according to ASTM D 1238 at 190° C. under a 5.0 kg load, ranging from about 5.0 to 50 g/10 min. A method of producing an article may include injection molding the composition to give a preform; and stretch-blowing the preform to provide the article.

Abstract: A method may include polymerizing ethylene in a tubular reactor, where the polymerization is substantially free of a chain transfer agent. A method may include polymerizing ethylene in a tubular reactor, the ethylene having a specific delivery pressure and the polymerization having one or more specific peak temperatures. The molecular weight of the resulting polyethylene may be controlled by the selection of the delivery pressure and the one or more peak temperatures.

Abstract: A method for producing a low viscosity polyethylene-based composition comprising melting a polyethylene-based composition; decreasing a viscosity of the polyethylene-based composition; and optionally, repeating the melting and the viscosity decreasing steps to form a low viscosity polyethylene-based composition; wherein the melting and viscosity decreasing steps are performed in a continuous process at temperature that is equal to or greater than 350° C., residence time of less than 2 min and the polyethylene-based composition is in the presence of at least one free radical generator.

Abstract: A method for producing a low viscosity polypropylene composition may include melting a polypropylene-based composition; reducing a viscosity of the polypropylene-based composition; and optionally, repeating the melting and the reducing steps to form a low melt viscosity polypropylene-based composition; wherein the melting and viscosity decreasing steps are performed in the presence of at least one free radical generator and at least one pro-degradant stearate.

Abstract: The present invention refers to co-extrusion of one or more polyolefins with one or more adhesive layers to improve the adhesiveness of the polyolefins in metal, epoxy resin, glass, ceramics, paper, wood, thermoplastic resin, fabric, non-woven fabric, varnishes and formica. More specifically, the present invention refers to a method of co-extruding at least one polyolefin with an adhesive layer, thereby enhancing the adhesion properties of the polyolefin, particularly in polyurethane foams such that a polar surface is imparted to the obtained adhesived polyolefin.

Abstract: Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 ?m. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.

Abstract: A method may include reprocessing a polymer composition comprising a crosslinked polymeric composition, wherein the crosslinked polymeric composition comprises a matrix polymer having a polar polymer internal phase that is selectively crosslinked with a crosslinking agent, wherein the reprocessed polymer composition retains an environmental stress cracking resistance within 60% of the value for the initial polymer composition when measured according to ASTM D-1693 procedure B and wherein the reprocessed polymer composition presents a Normalized Property Balance Index (NPBI) greater than about 1.0.

Abstract: A polymer composition may include a crosslinked polymeric additive composition that includes a matrix polymer comprising a polyolefin, and one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles comprise a polar polymer selectively crosslinked with a crosslinking agent; and a secondary polymer composition.

Abstract: Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 ?m. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.

Abstract: A method may include polymerizing ethylene in a tubular reactor, where the polymerization is substantially free of a chain transfer agent. A method may include polymerizing ethylene in a tubular reactor, the ethylene having a specific delivery pressure and the polymerization having one or more specific peak temperatures. The molecular weight of the resulting polyethylene may be controlled by the selection of the delivery pressure and the one or more peak temperatures.

Abstract: Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 ?m. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.

Abstract: A blow molded article may include a polymer matrix comprising virgin or recycled polyolefin; and one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles comprise a polar polymer selectively crosslinked with a crosslinking agent. The one or more polymer particles has an average particle size of up to 200 ?m. Further, the blow molded article may possess improved ESCR, while maintaining stacking resistance, drop impact resistance, leakproofness, internal hydrostatic pressure resistance, and/or barrier to volatile organic compounds.

Abstract: A method of recycling a first polymer from a multi-component polymer product may include subjecting the multi-component polymer product that includes a first polymer and at least one additional component to conditions to melt the first polymer; and filtering the at least one additional component from the molten first polymer.

Abstract: A method may include reprocessing a polymer composition comprising a crosslinked polymeric composition, wherein the crosslinked polymeric composition comprises a matrix polymer having a polar polymer internal phase that is selectively crosslinked with a crosslinking agent, wherein the reprocessed polymer composition retains an environmental stress cracking resistance within 60% of the value for the initial polymer composition when measured according to ASTM D-1693 procedure B and wherein the reprocessed polymer composition presents a Normalized Property Balance Index (NPBI) greater than about 1.0.

Abstract: A polymer composition may include a crosslinked polymeric additive composition that includes a matrix polymer comprising a polyolefin, and one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles comprise a polar polymer selectively crosslinked with a crosslinking agent; and a secondary polymer composition.

Abstract: Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 ?m. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.

Abstract: Polymer compositions may include a polymer matrix containing a polyolefin, one or more polymer particles dispersed in the polymer matrix, wherein the one or more polymer particles include a polar polymer selectively crosslinked with a crosslinking agent, and wherein the one or more polymer particles has an average particle size of up to 200 ?m. Processes of preparing a polymer composition may include mixing a polyolefin, a polar polymer, and a crosslinking agent; and selectively crosslinking the polar polymer with the crosslinking agent in the presence of the polyolefin. Methods may include increasing stress cracking resistance of a polyolefin by mixing a polar polymer with the polyolefin; and selectively crosslinking the polar polymer in the presence of the polyolefin with a crosslinking agent to form crosslinked polar polymer particles dispersed in the polyolefin.

Abstract: The present application refers to a process for the modification of polypropylene, wherein amount, size and configuration of the branches are controlled, the process comprising the steps of (A) preparing a bis(sulphonazide) (BSA) masterbatch by dispersing BSA in polyolefin; (B) adding (i) at least one fatty acid salt with metal cation having valence of 1+ to 3+; and (ii) the BSA masterbatch prepared in step (A) to the polypropylene to be modified. Said modified polypropylene of the present invention possesses properties suitable for use in foaming, blowing, thermoforming, recoating, film extrusion, BOPP, spinning processes and other processes and applications, and it is also suitable to be in contact with food products.

Abstract: The present invention is directed to a modified polypropylene comprising from 0.3 to 2 long-chain branches per 1,000 carbon atoms, wherein said long-chain branch has more than 1,000 carbon atoms and 0 to 6% of ethene and/or alpha-olefinic comonomer having 3 to 18 carbon atoms. The polypropylene of the present invention is a homopolymer, a random copolymer, or a heterophasic copolymer. The present invention also relates to large, deep, complex and/or thick articles which are thermoformed from said polypropylene. Furthermore, the present invention relates to the process for thermoforming said modified polypropylene into large, deep, complex and/or thick articles. The present invention also relates to the use of the polypropylene to prepare large, deep, complex and/or thick articles.