Basell Poliolefine Italia S.r.l. Patente

A recycled polyolefin composition comprising 15 wt% to 60 wt% of recycled polypropylene (T1) and 40 wt% to 85 wt% of a polypropylene composition (T2). T2 consists of 5 wt% to 35 wt% of a first propylene homopolymer and 65 wt% to 95 wt% of a polypropylene-ethylene copolymer. Key characteristics include: • Recycled polypropylene (T1): • Ethylene units: 22.50 wt% to 67.30 wt% • Butene units: 0.15 wt% to 1.50 wt% • Propylene units: >30.4 wt% • Melt Flow Rate: 1.2 to 20.3 g/10 min • Soluble fraction in xylene: 11.0 wt% to 36.0 wt% The polypropylene-ethylene copolymer has ethylene units content from 19.0 wt% to 44.0 wt% and a Melt Flow Rate ranging from 2.2 to 20.7 g/10 min.

A propylene ethylene copolymer composition comprising:T1) a propylene ethylene copolymer comprisingA) from 76.5 wt% to 96.0 wt% of a propylene homopolymer,B) from 4.0 wt% to 23.5 wt% of a propylene ethyleneT2) from 0.05 wt% to 0.70 wt%; of a mixture of talc and sodium benzoate

A multilayer film comprising at least one core layer comprising a polypropylene composition comprising: A) from 55 wt% to 85 wt%; of a recycled a recycled polypropylene B) from 15 wt% to 45 wt%; of a virgin polypropylene composition comprising: - (b1) from 75 wt% to 95 wt%, of a propylene homopolymer, - (b2) from 5 wt% to 25 wt%; of a copolymer of propylene and ethylene.

A process for preparing a polyolefin composition comprising a first polyolefin and a second polyolefin material, wherein at least the first polyolefin material is derived from post-consumer and/or post-industrial waste. The process is carried out in a cascade extrusion process, and comprises the steps of supplying recycled polyolefin material to a first stage extruder and forming a molten first polyolefin material, which is processed under visbreaking conditions. The molten recycled polyolefin is fed to a second stage extruder downstream of a second polyolefin feed. Second polyolefin material is fed at a flow rate to the second stage extruder extruding the polyolefin composition in a pelletized form. The process comprises the steps of measuring the viscosity of the molten first polyolefin material and adjusting the temperature and/or SEI value of the first stage extruder in response to a difference between the measured viscosity and a pre-set target viscosity.

A polypropylene composition comprising:A) from 31 wt% to 69 wt% of a recycled polypropylene component;B) from 31 wt% to 69 wt% of a propylene ethylene copolymer having:the ethylene derived units content, measured by ¹³C-NMR, ranging from 1.8 wt% to 6.1 wt%.

A process and a plant for producing a polyolefin obtained by polymerization of propylene; the process comprises: a reaction step, during which the propylene reacts in a polymerization reactor so as to obtain a said polyolefin; a stripping step, during which said polyolefin is contacted with a counter-current flow of saturated steam in a stripping device so as to strip away gases from said polyolefin; a purification step, which takes place at in a purification assembly and during which CO, CO<2> and alcohols are separated from said gasses so as to obtain a stream of treated gases; and a recycle step, during which the stream of treated gasses is fed to the polymerization reactor.

The disclosure relates to a continuous process for the production of dry polyolefin pellets comprising (a) pelletizing polyolefin melt material in an underwater pelletizing system in the presence of pellet cutting water to produce polyolefin pellets and (b) drying the polyolefin pellets. The process further comprising circulating the pellet cutting water in a pellet cutting water system comprising pellet cutting water temperature control means, pellet cutting water circulating means, and pellet cutting water storage means. The pellet cutting water contains one or more flow aid agents, one or more antifoam agents, and one or more antisticking agents.

In the present disclosure a polyolefin composition comprising a component I, which is a polyethylene enriched post consumer recyclate and a component II, which is a virgin derived polyolefin, having good mechanical properties such as high Environmental Stress Crack Resistance besides good processing properties and resulting in high quality applications. The polyolefin composition is advantageously used for injection moulding articles and products as caps ad closures.

A process for obtaining a recycled polyethylene material having a MIE (ISO 1133-1 2012-03 at 190°C and 5 kg) ranging from 1.0 to 15.0 g/10 min, said process comprises the following steps: T1) dry blending a composition comprising: A) from 90 to 10 wt% of a recycled crosslinked; B) from 90 to 10 wt% of a high density polyethylene polymer; T2) subjecting the dry blended composition of step T1 to thermal visbreaking at a temperature higher than 290°C in an extruder device

A process for stripping a coating from a painted substrate comprising at least a base substrate and a paint layer, wherein the base substrate comprises a thermoplastic olefin is provided. The method comprises the steps of splitting the painted substrate into sections (4) having a longitudinal shape with a length (I) and a width (w), wherein the length (I) is larger than the width (w), flattening the section and mechanically stripping the paint layer at a temperature below the melting point of the base substrate.

A process of separating a polymer-monomer mixture into a solid fraction comprising the polymeric components and a gaseous fraction comprising the gaseous components containing monomers; the process comprising the step of: introducing the polymer-monomer mixture into a separation vessel comprising at least a filter bag, a first outlet for the gaseous fraction and second outlet for the solid fraction, which is on an opposite side of the filter bag with respect to the first outlet; applying a depression inside the filter bag so that the gaseous fraction passes through the filter bag and goes out of the vessel through the first outlet; and discharging the solid fraction through the second outlet; the filter bag comprises a filtering layer 9, which is comprises aramid fibers superficially coated with at least one perfluorocarbon.

The present disclosure relates to a polyolefin composition comprising: A) from 99.5% to 60% by weight of a recyclate polyolefin component containing not less than 80% by weight of a waste material selected from polyethylene, polypropylene or their mixtures; B) from 0.5% to 40% by weight of an ethylene copolymer having: 1) a 1-butene from 15% to 45% by weight; 2) density from 0.840 to 0.910 g/cm<3>; 3) Melt Flow Rate E from 0.1 to 15 g/10 min., preferably from 0.3 to 12 g/10 min., measured according to ISO 1133-1 2012-03 at 190 °C, with a load of 2.16 kg; 4) product r1·r2 of the reactivity ratios obtained from <13>C NMR triad distribution, from 0.55 to 0.95, where r1 is the reactivity ratio of ethylene to 1-butene and r2 is the reactivity ratio of 1-butene to ethylene.

1. The present disclosure relates to polyolefin composition comprising: A) from 99.5% to 60% by weight of a recyclate polyolefin component containing not less than 80% by weight of a waste material selected from polyethylene, polypropylene or their mixtures; B) from 0.5% to 40% by weight of a graft-modified polyethylene obtained by reacting an unsaturated modifying agent selected from unsaturated organic anhydrides, unsaturated organic acids and functional derivatives, different from anhydrides, of said unsaturated organic acids, and their mixtures, with a copolymer B<I>) of ethylene with alpha-olefins, said copolymer B<I>) having the following features: 1) an ethylene content from 50% to 85% by weight, preferably from 55% to 82% by weight; 2) density from 0.840 to 0.910 g/cm<3>; 3) Melt Flow Rate E from 0.1 to 15 g/10 min. measured according to ISO 1133-1 2012-03 at 190 °C, with a load of 2.16 kg; 4) elongation at break equal to or higher than 650%.

1. The present disclosure relates to polyolefin composition comprising: A) from 99.5% to 60% by weight of a recyclate polyolefin component containing not less than 80% by weight of a waste material selected from polyethylene, polypropylene or their mixtures; B) from 0.5% to 40% by weight of an ethylene copolymer having the following features: 1) a 1-octene content from 15% to 50% by weight; 2) density from 0.840 to 0.910 g/cm<3>; 3) Melt Flow Rate E from 0.1 to 15 g/10 min., measured according to ISO 1133-1 2012-03 at 190°C with a load of 2.16 kg; 4) product r1·r2 of the reactivity ratios obtained from <13>C NMR triad distribution, from 0.55 to 2.5, where r1 is the reactivity ratio of ethylene to 1-octene and r2 is the reactivity ratio of 1-octene to ethylene.

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