Polymer composition comprising a regenerated coated polyolefin fabric substrate

Abstract

The present invention relates to a polymer composition comprising the following components: A) 5% to 35% by weight, based on the total weight of the polymer composition, of a recycled polyolefin fabric substrate; wherein the fabric substrate is coated with a polyolefin composition comprising the following components: a1) a vinyl plastomer having a density measured according to ISO 1183-1 in the range of 0.857 g / cm 3 to 0.915 g / cm 3 and a melt flow rate (MFR) measured according to ISO 1133 in the range of 0.5 g / 10 min to 30 g / 10 min 2 (190 °C, 2.16 kg); and a2) a propylene plastomer having a density measured according to ISO 1183-1 in the range of 0.850 g / cm 3 to 0.910 g / cm 3 and a melt flow rate (MFR) measured according to ISO 1133 in the range of 0.01 g / 10 min to 30 g / 10 min 2 (230 °C, 2.16 kg); B) 65% to 95% by weight, based on the total weight of the polymer composition, of a homopolypropylene or a recycled polymer blend, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1; provided that components A) and B) together add up to 100% by weight. Furthermore, the present invention relates to the use of component A) for increasing the Charpy notched impact strength of component B), and to articles comprising the polymer composition according to the present invention.

Description

[0001] The present invention relates to a polymer composition comprising at least component A) and component B), wherein component A) is a specific recycled coated polyolefin fabric substrate and component B) is a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene. Furthermore, the present invention relates to the use of component A) for increasing the notched impact strength of component B) at 23 °C, and to articles comprising the polymer composition according to the present invention. Background Art

[0002] In a wide range of applications, the consumption of polyolefins is increasing. This is not only due to their favorable cost-performance ratio, but also because these materials are versatile and very widely modifiable, which allows for the customization of end-use properties in a wide range of applications.

[0003] In the past decade, attention has been paid to the environmental sustainability of plastics and their current usage. This has led to new legislation regarding the treatment, collection, and recycling of polyolefins. In addition, many countries have been working on increasing the percentage of plastic materials that are recycled rather than sent to landfills.

[0004] A major trend in the field of polyolefins is the use of recycled materials from a wide range of sources. The properties of such recycled polyolefin materials are generally much poorer than those of virgin materials, unless the amount of recycled polyolefin added to the final compound is extremely low. Recycled polymer blends are known in the art.

[0005] US 5,266,392 A relates to a compatibilized blend of polypropylene, linear low density polyethylene, and a low molecular weight plastomer. The blend preferably comprises at least about 50 wt% crystalline polypropylene, about 10 wt% to 50 wt% LLDPE dispersed in the polypropylene matrix, and a compatibilizing amount of an ethylene / α-olefin plastomer having a weight average molecular weight between about 5,000 and about 50,000 and a density of less than about 0.90 g / cm 3 , and a melt index of at least about 50 dg / min. The blend can be used to form melt spun and melt blown fibers. The present invention also discloses spunbond-meltblown-spunbond fabrics made from these blends.

[0006] US 5,811,494 A relates to polymer compositions made by blending at least one polyolefin (e.g., high density polyethylene or polypropylene) with a small amount of at least one homogeneous linear ethylene / C5-C20 α-olefin or at least one substantially linear ethylene / C3-C20 α-olefin polymer. These compositions are suitable for thermoforming or molding thin wall applications, such as drinking cups, lids, and food containers, where the flow length to wall thickness ratio is greater than about 180:1.

[0007] EP 0 847 420 A1 relates to a packaging material or article or medical device which is prepared for, or has been exposed to, radiation sterilization for itself, its contents, or a combination thereof; a blend comprising from about 99 wt% to about 50 wt% of a homopolymer or copolymer polypropylene, the blend comprising from about 1 wt% to about 50 wt% of a polyethylene produced by single-site catalysis.

[0008] US 2005 / 127558 A1 relates to a method for preparing a polypropylene molding compound, the method comprising: blending polypropylene with another polymer in the range of 20 wt% to 50 wt%; adding a compatibilizer; melt-kneading the mixture in the presence of a low molecular weight copolymer; and melt-extruding the mixture in a twin-screw melt extruder at a temperature of 120 °C to 180 °C to obtain a polypropylene molding compound.

[0009] Polymer-coated textile materials are widely used, such as for seat upholstery for carpets, mattresses, pillows, and office furniture, automotive interiors, etc. Desirably, these materials have good softness as well as attractive wear-resistant and UV-resistant properties. In today's market, polymer-coated textile materials are made from various non-polyolefin materials (such as polyurethane (PU), polyvinyl chloride (PVC), and ethylene vinyl acetate (EVA)). From a sustainability perspective, it is challenging to recycle these materials, even if possible. Additionally, when these materials are mixed together, it is generally not possible to correctly separate them during sorting for recycling.

[0010] US 2008 / 0299853 A1 describes a three-layer coated fabric having a bottom backing layer, a top coating, and an intermediate coating comprising recycled coated fabric material. All component parts of the recycled coated fabric are included in this intermediate layer. The intermediate layer sometimes also contains other materials that can be blended with these recycled coated fabrics or other post-consumer recycled materials. The three-layer coated fabric is manufactured by converting these recycled coated fabrics and other materials into a form that can be used to produce the intermediate layer.

[0011] Polyolefin-based fabric substrates are known in the art. WO 2006 / 109319 A1 relates to a method for manufacturing a protective cover comprising a polypropylene fabric coated or laminated with a thermoplastic polyolefin compound. However, this document does not mention recycling aspects.

[0012] Known polymer compositions containing recycled materials are not suitable for the high-end market, and especially due to their mechanical properties, they cannot compete with virgin materials.

[0013] The object of the present invention is to overcome the disadvantages of polymer compositions according to the prior art. In particular, the object of the present invention is to provide polymer compositions having good mechanical properties (such as high toughness as represented by Charpy notched impact strength) and good stiffness. Summary of the Invention

[0014] These objects have been solved by a polymer composition comprising the following components:

[0015] A) 5% to 35% by weight, based on the total weight of the polymer composition, of a recycled coated polyolefin fabric substrate; wherein the fabric substrate is coated with a polyolefin composition comprising the following components:

[0016] a1) A vinyl plastomer having a density measured according to ISO 1183-1 in the range of 0.857 g / cm 3 to 0.915 g / cm 3 and an MFR measured according to ISO 1133 in the range of 0.5 g / 10 min to 30 g / 10 min 2 (190 °C, 2.16 kg); and

[0017] a2) A propylene plastomer having a density measured according to ISO 1183-1 in the range of 0.850 g / cm 3 to 0.910 g / cm 3 and an MFR measured according to ISO 1133 in the range of 0.01 g / 10 min to 30 g / 10 min 2 (230 °C, 2.16 kg);

[0018] B) 65% to 95% by weight, based on the total weight of the polymer composition, of a homopolypropylene or a recycled polymer blend, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1;

[0019] Provided that components A) and B) together add up to 100% by weight.

[0020] In particular, the polymer composition according to the present invention comprises:

[0021] A) 5% to 35% by weight, based on the total weight of the polymer composition, of a recycled coated polyolefin fabric substrate, the recycled coated polyolefin fabric substrate comprising a fabric substrate coated with a polyolefin coating composition, the polyolefin coating composition comprising the following components:

[0022] a1) A vinyl plastomer having a density measured according to ISO 1183-1 in the range of 0.857 g / cm3 from 0.850 g / cm 3 to 0.915 g / cm, and the melt flow rate (MFR) measured according to ISO 1133 in the range from 0.5 g / 10 min to 30 g / 10 min 2 (at 190 °C, 2.16 kg); and

[0023] a2) an alkenyl plastomer having a density measured according to ISO 1183-1 from 0.850 g / cm 3 to 0.910 g / cm 3 and an MFR measured according to ISO 1133 in the range from 0.01 g / 10 min to 30 g / 10 min 2 (at 230 °C, 2.16 kg);

[0024] B) 65 wt% to 95 wt% of a homopolypropylene or a recycled polymer blend, based on the total weight of the polymer composition, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1.

[0025] Surprisingly, it has been found that a specific combination of the recycled coated polyolefin fabric substrate and component B), where component B) is a homopolypropylene or a recycled polymer blend, allows obtaining a polymer composition with good mechanical properties.

[0026] It should be understood that components A and B cannot be the same.

[0027] Advantageous embodiments of the polymer composition according to the invention are detailed in the dependent claims.

[0028] On the other hand, the present invention provides the use of component A) as a recycled coated polyolefin fabric substrate; wherein the fabric substrate is coated with a polyolefin coating composition comprising the following components:

[0029] a1) a vinyl plastomer having a density measured according to ISO 1183-1 from 0.850 g / cm 3 to 0.915 g / cm 3 and an MFR measured according to ISO 1133 in the range from 0.5 g / 10 min to 30 g / 10 min 2 (at 190 °C, 2.16 kg); and

[0030] a2) an alkenyl plastomer having a density measured according to ISO 1183-1 from 0.860 g / cm 3 to 0.910 g / cm 3The density measured within the range and the MFR measured within the range of 0.5 g / 10 min to 30 g / 10 min and preferably within the range of 0.01 g / 10 min to 30 g / 10 min according to ISO 1133 2 (230 °C, 2.16 kg);

[0031] For increasing the Charpy notched impact strength measured according to ISO 179-1eA at 23 °C;

[0032] Component B) is a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1;

[0033] Component B) is present in an amount of 65% to 90% by weight and preferably 70% to 90% by weight based on the total weight of components A) and B).

[0034] Component A) is preferably present in an amount of 5% to 35% by weight (such as 10% to 30% by weight) based on the total weight of components A) and B).

[0035] Viewed from another aspect, the present invention provides an article comprising the polymer composition as defined previously herein. Detailed Description

[0036] Indication of amounts

[0037] The polymer composition according to the present invention comprises components A) and B) and optionally additives. In one embodiment, the sum of components A), B) and the additives (if present) adds up to 100% by weight. In this embodiment, the fixed ranges of the indication of the amounts of the individual components A), B) and optionally the additives should be understood such that any amount of each of these individual components can be selected within the provided defined ranges, provided that the strict requirement that the sum of all components A), B) and optionally the additives adds up to 100% by weight is met.

[0038] In one embodiment, component A) according to the present invention comprises components a1), a2) and optionally component a3). In one embodiment, the sum of components a1), a2) and component a3) (if present) adds up to 100% by weight. In this embodiment, the fixed ranges of the indication of the amounts of the individual components a1), a2) and optionally a3) should be understood such that any amount of each of these individual components can be selected within the provided defined ranges, provided that the strict requirement that the sum of all components a1), a2) and optionally a3) adds up to 100% by weight is met.

[0039] For the purposes of this specification and the following claims, the term "recycled coated polyolefin fabric substrate" (= Component A) is used to indicate that the material has been recycled. In the gist of the present invention, the "recycled coated polyolefin fabric substrate" may also contain up to 10% by weight, preferably up to 5% by weight, more preferably up to 1% by weight, and even more preferably up to 0.1% by weight, based on the total weight of the recycled coated polyolefin fabric substrate, of other components derived from the first use. The type and amount of these components affect the physical properties of the recycled coated polyolefin fabric substrate. Typical other components derived from the first use are components of paints (such as polyurethanes).

[0040] For the purposes of this specification and the following claims, the term "recycled polymer blend" (= Component B) is used to indicate that the material is recovered from post-consumer waste and / or industrial waste. That is, post-consumer waste refers to items that have completed at least the first use cycle (or life cycle), i.e., items that have achieved their first purpose and have passed through the hands of consumers; while industrial waste refers to manufacturing scraps that generally do not reach the hands of consumers. In the gist of the present invention, the "recycled polymer" may also contain up to 17% by weight, preferably up to 3% by weight, more preferably up to 1% by weight, and even more preferably up to 0.1% by weight, based on the total weight of the recycled polymer, of other components derived from the first use. The type and amount of these components affect the physical properties of the recycled polymer. The physical properties given below refer to the main components of the recycled polymer.

[0041] Typical other components derived from the first use of the "recycled polymer blend" are thermoplastic polymers such as polystyrene (PS) and polyamide 6 (PA 6), talc, chalk, ink, wood, paper, limonene, and fatty acids. The contents of polystyrene and PA 6 in the "recycled polymer blend" can be determined by Fourier transform infrared spectroscopy (FTIR), and the contents of talc, chalk, wood, and paper can be measured by thermogravimetric analysis (TGA).

[0042] The term "virgin" means newly produced materials and / or articles that are not recycled and are before the first use. In the absence of an explicit mention of the source of these materials, these materials are "virgin" materials.

[0043] As used herein, the term "vinyl plastomer" refers to a plastomer that contains a large amount of polyethylene monomers based on the weight of the plastomer and optionally may contain at least one comonomer.

[0044] As used herein, the term "propylene plastomer" refers to a plastomer that contains a large amount of polypropylene monomers based on the weight of the plastomer and optionally may contain at least one comonomer.

[0045] In the gist of the present invention, a "polyolefin fabric substrate" is a fabric substrate containing a large amount of polyolefin based on the weight of the fabric substrate.

[0046] For the purposes of this specification and the claims, a "non-woven fabric" is a fabric or similar material made of fibers bonded together by chemical, mechanical, thermal, or solvent treatment. The term is used to denote a fabric that is neither woven nor knitted, such as felt.

[0047] For the purposes of the present invention, a "flame retardant" is a substance that is activated by the presence of a combustion source and prevents or slows down the further development of combustion by various different physical and chemical methods.

[0048] When the terms "comprising / including" are used in this specification and the claims, it does not exclude other non-specified elements having primary or secondary functions. For the purposes of the present invention, the term "consisting of" is considered a preferred embodiment of the term "comprising / including". If a group is defined hereinafter as including at least a certain number of embodiments, it should also be understood that a group consisting only of these embodiments is disclosed.

[0049] Whenever the terms "comprising / including" or "having" are used, these terms are meant to be equivalent to "comprising / including" as defined above.

[0050] When referring to a singular noun, in the case of using an indefinite or definite article, such as "a", "an", or "the", this includes the plural of the noun unless otherwise expressly stated.

[0051] Component A)

[0052] Component A) of the polymer composition according to the present invention is a recycled coated polyolefin fabric substrate, wherein the fabric substrate is coated with a specific polyolefin coating composition, and the specific polyolefin coating composition contains the following specified components.

[0053] According to a preferred embodiment of the present invention, based on the total weight of component A), the content of the coating composition is in the range of 5% to 90% by weight, preferably in the range of 50% to 85% by weight, more preferably in the range of 55% to 75% by weight, and even more preferably in the range of 60% to 70% by weight.

[0054] According to a preferred embodiment of the present invention, based on the total weight of component A), the content of the fabric substrate is in the range of 8% to 50% by weight, preferably in the range of 10% to 45% by weight, more preferably in the range of 20% to 35% by weight.

[0055] As described above, the polyolefin fabric substrate contains a substantial amount of polyolefin based on the weight of the fabric substrate, preferably the fabric substrate contains polypropylene, and more preferably the substrate consists of polypropylene.

[0056] Another embodiment of the present invention provides that the material (such as the fabric substrate) used as the raw material for component A) is a non-woven material. According to an alternative embodiment of the present invention, the fabric substrate used as the raw material for component A) is a woven material. Woven fabrics include knitted fabrics, especially polypropylene knitted fabrics.

[0057] In addition to the coating composition and the polyolefin fabric substrate as defined herein, the composition used as the raw material for component A) can also be coated with one or more additional materials such as paints (e.g., polyurethane paints) to change the surface properties of the polyolefin fabric substrate. According to a preferred embodiment of the present invention, the content of the paint is less than 15% by weight based on the total weight of component A), preferably in the range of 0.2% to 5% by weight, and more preferably in the range of 0.4% to 2% by weight.

[0058] Generally, the coated polyolefin fabric substrate can be regenerated by any mechanical regeneration method known in the art to obtain component A). Preferably, the method allows obtaining component A) in a comminuted form (such as pellets, flakes, powders or granules).

[0059] The data used in the experimental part of the present invention is based on composites. The recycled material is comminuted using a Wittmann grinder to obtain a quantifiable material for the composites. Therefore, the comminuted material is added in a twin-screw metering system to allow precise control of the feed rate of these comminuted materials into the extruder.

[0060] Another preferred way to recycle the polyolefin fabric substrate is to use the Erema Pure Loop system. In this system, the fabric itself (such as sheets) is conveyed by a belt to a comminution chamber. Then the fabric is comminuted into small pieces, and then directly fed into an extruder for melting, homogenizing, and filtering before underwater pelletizing. The pellets are collected and prepared for further use, i.e., compounding.

[0061] Vinyl plastomer

[0062] Component A) according to the present invention contains a vinyl plastomer a1). Not only can a single vinyl plastomer be used, but also a mixture of two or more vinyl plastomers as defined herein can be used. In addition, the vinyl plastomer can contain standard polymer additives.

[0063] The preferred embodiments of the vinyl plastomer will be discussed below.

[0064] According to a preferred embodiment of the present invention, the vinyl plastomer a1) is a copolymer of ethylene and at least one C3 to C10 α-olefin, and is preferably a copolymer of ethylene and 1-octene.

[0065] Another preferred embodiment of the present invention provides that the vinyl plastomer a1) has a density measured according to ISO 1183-1 in the range of 0.860 g / cm 3 to 0.915 g / cm 3 and preferably in the range of 0.865 g / cm 3 to 0.905 g / cm 3 and / or a MFR measured according to ISO 1133 in the range of 2.5 g / 10 min to 12 g / 10 min 2 (190 °C, 2.16 kg).

[0066] According to yet another preferred embodiment of the present invention, based on the total weight of the coating composition of component A), the content of component a1) in the coating composition of component A) is in the range of 40% by weight to 65% by weight, preferably in the range of 45% by weight to 62% by weight, and more preferably in the range of 52% by weight to 60% by weight.

[0067] In another preferred embodiment of the present invention, the ethylene content of the vinyl plastomer is in the range of 60% by weight to 95% by weight, preferably in the range of 65% by weight to 90% by weight, and more preferably in the range of 70% by weight to 88% by weight. The comonomer contribution is preferably up to 40% by weight, such as 5% by weight to 40% by weight, and more preferably up to 35% by weight.

[0068] According to yet another preferred embodiment of the present invention, the melting point of the vinyl plastomer (measured by DSC according to ISO 11357-3:1999) is below 130 °C, preferably below 120 °C, more preferably below 110 °C and most preferably below 100 °C. A reasonable lower limit for the melting point of a suitable vinyl plastomer is 30 °C. A typical melting point range is 33 °C to 115 °C.

[0069] Another preferred embodiment of the present invention provides that the vinyl plastomer has a glass transition temperature Tg (measured by DMTA according to ISO 6721-7) below -40 °C, preferably below -54 °C, and more preferably below -58 °C.

[0070] In yet another embodiment of the present invention, the Mw / Mn value of the vinyl plastomer (representing the width of the molecular weight distribution (MWD)) is in the range of 1.5 to 5.0, preferably in the range of 2.0 to 4.5, and more preferably in the range of 2.5 to 4.0.

[0071] According to yet another embodiment of the present invention, the vinyl plastomer is a metallocene-catalyzed polymer, although Ziegler-Natta-based vinyl plastomers are also possible.

[0072] Suitable vinyl plastomers are commercially available, for example, obtained under the trade name Queo from Borealis AG (AT), under the trade name Engage or Affinity from DOW Chemical Corp (USA), or under the trade name Tafmer from Mitsui.

[0073] The method for manufacturing vinyl plastomers is particularly described in WO2019 / 238943.

[0074] Propylene plastomer

[0075] Component A) according to the present invention comprises a propylene-based plastomer. Not only can a single propylene-based plastomer be used, but also a mixture of two or more propylene-based plastomers as defined herein can be used. In addition, the propylene-based plastomer may contain standard polymer additives.

[0076] A preferred embodiment of the present invention provides that the propylene-based plastomer a2) is a copolymer of propylene and ethylene or a C4 to C10 α-olefin.

[0077] According to another preferred embodiment of the present invention, the propylene-based plastomer a2) has a density measured according to ISO 1183-1 in the range of 0.855 g / cm 3 to 0.900 g / cm 3 and / or a MFR measured according to ISO 1133 in the range of 3.0 g / 10 min to 22 g / 10 min 2 (230 °C, 2.16 kg).

[0078] In a preferred embodiment of the present invention, based on the total weight of the coating composition of component A), the content of component a2) in the coating composition of component A) is in the range of 20% by weight to 40% by weight, preferably in the range of 29% by weight to 39% by weight, and more preferably in the range of 30% by weight to 34% by weight.

[0079] Another preferred embodiment of the present invention provides that the propylene-based plastomer a2) is a copolymer of propylene and ethylene.

[0080] According to yet another embodiment of the present invention, the propylene-based plastomer a2) has a density measured according to ISO 1183-1 in the range of 0.855 g / cm 3 to 0.900 g / cm 3The density measured within the range and the MFR measured within the range of 3.0 g / 10 min to 22 g / 10 min according to ISO 1133 2 (230 °C, 2.16 kg).

[0081] In yet another preferred embodiment of the present invention, propylene is present in component a2) in an amount of 55% to 95% by weight. If the comonomer is ethylene, the content of ethylene in the propylene-ethylene copolymer is preferably 5% to 30% by weight, such as 7.5% to 20% by weight.

[0082] Yet another preferred embodiment of the present invention provides that the molecular weight distribution (MWD) of the propylene-based plastomer a2) is 3.5 or lower, or 3.0 or lower, or 1.8 to 3.0, which molecular weight distribution is defined as the weight-average molecular weight divided by the number-average molecular weight (Mw / Mn).

[0083] The weight-average molecular weight (Mw) of the propylene-based plastomer of the present invention can vary widely, but is generally between about 10,000 and 1,000,000 (understanding that the only limitations on the minimum or maximum Mw are set by practical considerations).

[0084] Suitable propylene-based plastomers for use in the present invention are commercially available and can be purchased from polymer suppliers. Examples include those plastomers commercially available under the trade name VERSIFY from The Dow Chemical Company or under the trade name VISTAMAXX from ExxonMobil Chemical Company.

[0085] WO2019238943 specifically describes a method for manufacturing vinyl plastomers.

[0086] Flame retardant

[0087] Component A) according to the present invention may comprise a flame retardant a3). Not only can a single flame retardant be used, but also a mixture of two or more flame retardants as defined herein can be used. Component a3) is desirably part of the coating composition.

[0088] According to a preferred embodiment of the present invention, the flame retardant a3) is selected from the group consisting of: boron phosphate flame retardants, magnesium oxide, dipentaerythritol, polytetrafluoroethylene (PTFE) polymers, phosphate ester flame retardants (e.g., tricresyl phosphate); minerals such as aluminum hydroxide (ATH), magnesium hydroxide (MDH), dolomite and hydromagnesite, antimony trioxide, aluminum trihydrate, red phosphorus, boron compounds (e.g., borates), inorganic hypophosphites, metal hypophosphites (such as salts of hypophosphites and / or diphosphites or their polymer derivatives); organic halogen compounds such as organochlorines (such as chlorendic acid derivatives and chlorinated paraffins), organobromines (such as decabromodiphenyl ether (decaBDE), decabromodiphenylethane, polymeric brominated compounds (such as brominated polystyrene, brominated carbonate oligomers (BCOs), brominated epoxy oligomers (BEOs)), decabromodiphenyl oxide, ethylenebis(tetrabromophthalimide), tetradecabromodiphenoxybenzene, ethylenebis(dibromonorbornanedicarboximide), tetrabromophthalic anhydride, tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCD)); phosphate flame retardants such as phosphoric acid, phosphorous acid, hypophosphorous acid, phosphoric acid amines, melamine phosphate, melamine diphosphate, melamine pyrophosphate, melamine dipyrophosphate, ammonium polyphosphate, melamine polyphosphate, ethylenediamine phosphate, melamine nitrilotriphosphate or metal salts of their combinations; organic phosphorus compounds, especially aromatic phosphate esters containing mono-phosphate esters with aryl groups, di-phosphate esters with aryl groups, tri-phosphate esters with aryl groups and mixtures thereof.

[0089] Other organic phosphate esters include triphenyl phosphate (TPP), resorcinol bis(diphenyl phosphate) (RDP), bisphenol A diphenyl phosphate (BADP) and tricresyl phosphate (TCP); phosphonate esters such as dimethyl methylphosphonate (DMMP); and hypophosphites such as aluminum diethylphosphinate. In one important class of flame retardants, the compounds contain both phosphorus and halogen. Such compounds include tris(2,3-dibromopropyl) phosphate (tribromone) and chlorinated organic phosphate esters such as tris(1,3-dichloro-2-propyl) phosphate (trichlorone or TDCPP) and tetra(2-chloroethyl) dichloroisopentyl diphosphate (V6).

[0090] Other known flame retardants that can be used include halogenated and / or melamine-based flame retardants and those containing ammonium polyphosphate.

[0091] Melamine derivatives include melamine polyphosphate, melamine pyrophosphate and melamine cyanurate, as well as mixtures of two or more of these substances. The halogenated flame retardants that can be used in the compositions of the present invention are selected from organic aromatic halogenated compounds such as halogenated benzenes, biphenyls, phenols, ethers or esters, bisphenols, diphenyl ethers, aromatic carboxylic acids or polyacids, acid anhydrides, amides or imides; organic alicyclic or polycyclic aliphatic halogenated compounds; and organic aliphatic halogenated compounds such as halogenated paraffins, oligomers or polymers, alkyl phosphates or alkyl isocyanurates.

[0092] According to a preferred embodiment of the present invention, the flame retardant is halogen-free.

[0093] Another preferred embodiment of the present invention provides that the flame retardant a3) comprises ammonium polyphosphate and is more preferably composed of ammonium polyphosphate.

[0094] According to a preferred embodiment of the present invention, based on the total weight of the coating composition of component A), the content of component a3) in the coating composition of component A) is in the range of 5% to 20% by weight, preferably in the range of 9% to 16% by weight, and more preferably in the range of 10% to 14% by weight.

[0095] The flame retardant can be added alone or as part of a polymer masterbatch. The polymer masterbatch can contain, for example, 2.5% to 60% by weight of the flame retardant.

[0096] According to a preferred embodiment of the present invention, the flame retardant comprises a mixture of ammonium polyphosphate and a silane-functionalized ethylene copolymer. Ammonium polyphosphate is a stable non-volatile compound and is commercially available and can be purchased from many suppliers. Examples include flame retardants of the ADKSTAB FP-2000 series from Adeka Polymer Additive Europe or IC FR5110 from Into Chemicals.

[0097] The silane-functionalized ethylene copolymer is an ethylene copolymer containing units with silane groups. The units with silane groups can be present as comonomers of the ethylene copolymer or as compounds chemically grafted onto the polymer.

[0098] Component B)

[0099] Component B) according to the present invention is a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1.

[0100] According to a preferred embodiment of the present invention, component B) is a homopolypropylene having an MFR measured according to ISO 1133 in the range of 10 g / 10 min to 30 g / 10 min, preferably in the range of 15 g / 10 min to 25 g / 10 min and more preferably in the range of 18 g / 10 min to 22 g / 10 min 2 (at 230 °C, 2.16 kg).

[0101] Another preferred embodiment of the present invention provides that component B) is a homopolypropylene having a melting point measured according to ISO 11357-3 in the range of 158 °C to 163 °C and preferably in the range of 160 °C to 162 °C.

[0102] Preferred homopolypropylenes are commercially available under the trade names HE370FB, HG475FB, HH450FB and HF420FB from Borealis AG, Austria.

[0103] Yet another preferred embodiment of the present invention provides that component B) is a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1.

[0104] According to yet another preferred embodiment of the present invention, component B) is a recycled polymer blend comprising 80.0 wt% to 99.9 wt%, preferably 90.0 wt% to 99.0 wt% and more preferably 94.0 wt% to 98.0 wt% of polypropylene b1) and polyethylene b2) based on the total weight of component B).

[0105] In yet another preferred embodiment of the present invention, component B) is a recycled polymer blend comprising less than 5 wt%, preferably less than 3 wt% and more preferably from 0.01 wt% to 2 wt% of a thermoplastic polymer different from b1) and b2) based on the total weight of component B).

[0106] Yet another preferred embodiment of the present invention provides that component B) is a recycled polymer blend comprising less than 4.0 wt% of PA 6 and less than 5 wt% of polystyrene, and more preferably component B) comprises from 0.5 wt% to 3 wt% of polystyrene.

[0107] According to another preferred embodiment of the present invention, component B) is a recycled polymer blend recovered from waste plastic materials derived from post-consumer and / or post-industrial waste.

[0108] In another preferred embodiment according to the present invention, component B) is a recycled polymer blend having an MFR determined according to ISO 1133 in the range of 16 g / 10 min to 50 g / 10 min and preferably in the range of 18 g / 10 min to 22 g / 10 min 2 (230 °C, 2.16 kg).

[0109] The recycled polymer blend preferably originates from post-consumer and / or post-industrial waste, which can in particular originate from waste electrical and electronic equipment (WEEE) or end-of-life vehicles (ELV) or from different waste collection schemes such as the German DSD system, the Austrian ARA system and the Austrian ASZ system (especially for Purpolen materials), or the Italian "Raccolta Differenziata" system.

[0110] The recycled materials can be commercially obtained, for example, from Corpela (an Italian consortium engaged in the collection, recycling and regeneration of packaging plastic waste), Resource Plastics Corp. (Brampton, ON), Kruschitz GmbH, Plastics and Recycling (AT), Ecoplast (AT), Vogt Plastik GmbH (DE), mtm plastics GmbH (DE), etc.

[0111] A preferred recycled polymer blend is Purpolen PP, which is a recycled polymer mixture containing polyethylene and polypropylene obtained from mtm plastics GmbH in Niedergebra, Germany.

[0112] Additive

[0113] The polymer composition according to the present invention may further comprise additives.

[0114] According to a preferred embodiment of the present invention, the polymer composition comprises at least one additive, and the at least one additive is preferably selected from the group consisting of: slip agents, acid scavengers, antimicrobial agents, UV stabilizers, pigments, antioxidants, antiblocking agents, additive carriers, nucleating agents, lubricants, processing aids, silicone-based scratch-resistant agents and mixtures thereof. These additives are preferably present in an amount of 0.1 wt% to 10 wt% and more preferably 0.5 wt% to 3 wt% based on the total weight of the polymer composition.

[0115] Polymer composition

[0116] Preferred embodiments of the polymer composition according to the present invention will be discussed below.

[0117] In a preferred embodiment of the present invention, based on the total weight of the polymer composition, the content of component A) in the polymer composition ranges from 9% to 31% by weight, preferably from 10% to 20% by weight, and more preferably from 19% to 31% by weight.

[0118] According to another embodiment of the present invention, based on the total weight of the polymer composition, the content of component B) in the polymer composition ranges from 69% to 91% by weight, preferably from 80% to 90% by weight, and more preferably from 69% to 81% by weight.

[0119] The preferred polymer composition according to the present invention comprises the following components:

[0120] A) 5% to 35% by weight of a recycled coated polyolefin fabric substrate based on the total weight of the polymer composition; wherein the fabric substrate is coated with a polyolefin coating composition, and the polyolefin coating composition comprises the following components:

[0121] a1) A vinyl plastomer having a density measured according to ISO 1183-1 in the range of 0.860 g / cm 3 to 0.915 g / cm 3 and a MFR measured according to ISO 1133 in the range of 0.5 g / 10 min to 30 g / 10 min 2 (190 °C, 2.16 kg);

[0122] a2) A propylene plastomer having a density measured according to ISO 1183-1 in the range of 0.850 g / cm 3 to 0.910 g / cm 3 and a MFR measured according to ISO 1133 in the range of 0.01 g / 10 min to 30 g / 10 min 2 (230 °C, 2.16 kg); and

[0123] a3) A flame retardant, preferably ammonium polyphosphate;

[0124] B) 65% to 95% by weight of a homopolypropylene or recycled polymer blend based on the total weight of the polymer composition, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1.

[0125] In one embodiment, components A) and B) together add up to 100% by weight.

[0126] In one embodiment, components a1), a2) and a3) of component A) add up to 100% by weight.

[0127] Another preferred polymer composition according to the present invention comprises the following components:

[0128] A) 9% to 31% by weight, preferably 19% to 31% by weight, of a recycled coated polyolefin fabric substrate based on the total weight of the polymer composition; wherein the fabric substrate is coated with a polyolefin coating composition comprising the following components:

[0129] a1) 40% to 65% by weight, preferably 45% to 62% by weight and more preferably 52% to 60% by weight of a vinyl plastomer based on the total weight of the coating composition, the vinyl plastomer having a density measured according to ISO1183-1 in the range of 0.865 g / cm 3 to 0.905 g / cm 3 and a MFR measured according to ISO 1133 in the range of 2.5 g / 10 min to 12 g / 10 min 2 (190 °C, 2.16 kg);

[0130] a2) 20% to 40% by weight, preferably 29% to 39% by weight, more preferably 30% to 34% by weight of a propylene-based plastomer based on the total weight of the coating composition, the propylene-based plastomer having a density measured according to ISO 1183-1 in the range of 0.855 g / cm 3 to 0.900 g / cm 3 and a MFR measured according to ISO 1133 in the range of 3 g / 10 min to 22 g / 10 min 2 (230 °C, 2.16 kg); and

[0131] a3) 5% to 20% by weight, preferably 9% to 16% by weight and more preferably 10% to 14% by weight of a flame retardant based on the total weight of the coating composition, the flame retardant being preferably ammonium polyphosphate;

[0132] B) 69% to 91% by weight, preferably 69% to 81% by weight, of a homopolypropylene or recycled polymer blend based on the total weight of the polymer composition, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is 3:7 to 12:1.

[0133] The compositions of the present invention can be prepared by any suitable method. Desirably, a method that produces a homogeneous mixture of the various components is used. Generally, compounding is employed. Compounding typically involves mixing and / or blending the various components in the molten state, usually by extrusion.

[0134] In one embodiment, the polymeric composition is prepared by obtaining a recycled coated polyolefin fabric substrate as defined herein and comminuting it to form a comminuted material; optionally combining in an extruder,

[0135] A) said comminuted material of the recycled coated polyolefin fabric substrate in an amount of 5 wt% to 35 wt% based on the total weight of the polymeric composition; wherein said fabric substrate is coated with a polyolefin coating composition comprising the following components:

[0136] a1) a vinyl plastomer having a density measured in the range of 0.857 g / cm 3 to 0.915 g / cm 3 as measured according to ISO 1183-1 and a melt flow rate (MFR) measured in the range of 0.5 g / 10 min to 30 g / 10 min according to ISO 1133 2 (190 °C, 2.16 kg); and

[0137] a2) a propylene plastomer having a density measured in the range of 0.850 g / cm 3 to 0.910 g / cm 3 as measured according to ISO 1183-1 and a melt flow rate (MFR) measured in the range of 0.01 g / 10 min to 30 g / 10 min according to ISO 1133 2 (230 °C, 2.16 kg); and

[0138] B) a homopolypropylene or recycled polymer blend in an amount of 65 wt% to 95 wt% based on the total weight of the polymeric composition, said recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1.

[0139] In one embodiment, these comminuted materials can be extruded and pelletized before being combined with component B). In one embodiment, the polymeric composition of the present invention can be pelletized in an extruder.

[0140] In one embodiment, the recycled polymer blend B) is obtained from waste plastic materials derived from post-consumer and / or post-industrial waste.

[0141] Use of Component A)

[0142] The invention also relates to the use of component A) for regenerating a coated polyolefin fabric substrate, wherein the fabric substrate is coated with a polyolefin coating composition comprising the following components: a1) a vinyl plastomer having a density measured according to ISO 1183-1 in the range of 0.850 g / cm 3 to 0.915 g / cm 3 and a melt flow rate (MFR) measured according to ISO 1133 in the range of 0.5 g / 10 min to 30 g / 10 min 2 (190 °C, 2.16 kg); and

[0143] a2) a propylene plastomer having a density measured according to ISO 1183-1 in the range of 0.860 g / cm 3 to 0.910 g / cm 3 and a melt flow rate (MFR) measured according to ISO 1133 in the range of 0.01 g / 10 min to 30 g / 10 min, preferably in the range of 0.5 g / 10 min to 30 g / 10 min 2 (230 °C, 2.16 kg);

[0144] for increasing the Charpy notched impact strength of component B) measured according to ISO 179-1eA at 23 °C;

[0145] Component B) is a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1; whereby component B) is present in an amount of 65% to 90% by weight, preferably 40% to 60% by weight, based on the total weight of components A) and B).

[0146] According to a preferred embodiment of the invention, component B) is a homopolypropylene, and the Charpy notched impact strength of component B) measured according to ISO 179-1eA at 23 °C is increased by at least 25%, preferably increased by 25% to 150%.

[0147] Another preferred embodiment of the invention provides that component B) is a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1, and the Charpy notched impact strength of component B) measured according to ISO 179-1eA at 23 °C is preferably increased by at least 10%, more preferably increased by 10% to 100%.

[0148] According to another preferred embodiment of the present invention, component B) is a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1, and the elongation at break of component B) measured according to ISO 527-2 preferably increases by at least 20% and more preferably increases by 20% to 250%.

[0149] Another preferred embodiment of the present invention provides that component A) comprises a flame retardant a3), which comprises ammonium polyphosphate and preferably consists of ammonium polyphosphate.

[0150] All of the preferred aspects and embodiments described above also apply to the use according to the present invention.

[0151] Article

[0152] The present invention also relates to an article comprising a polymer composition according to the present invention.

[0153] According to a preferred embodiment of the present invention, the article is selected from the group consisting of: consumer goods or household articles, preferably lids, caps and packaging containers, boxes, cutlery trays, waste bins.

[0154] The present invention will now be described with reference to the following non-limiting examples and figures. Description of the Drawings

[0155] Figures 1a to 1c 、 Figures 2a to 2c and Figures 3a to 3c show the FTIR of blue, white and black recycled coated polyolefin fabric substrates.

[0156] Experimental Section

[0157] A. Measurement Methods

[0158] Unless otherwise defined, the following term definitions and determination methods apply to the above general description of the present invention and the following examples.

[0159] Melt Flow Rate

[0160] The melt flow rate (MFR) is determined according to ISO 1133 (Part 1: Standard method for melt mass-flow rate (MFR) and melt volume-flow rate (MVR) of thermoplastics) and is expressed in g / 10 min. MFR is an indicator of the polymer's fluidity and thus also an indicator of the polymer's processability. The higher the melt flow rate, the lower the viscosity of the polymer. The MFR of polyethylene plastomers is determined at a temperature of 190 °C and a load of 2.16 kg 2 The MFR of polypropylene plastomers is determined at a temperature of 230 °C and a load of 2.16 kg 2 .

[0161] Density

[0162] Measure the density of the material according to ISO 1183-1. Sample preparation is completed by compression molding according to ISO 1872-2.

[0163] Tensile modulus, tensile strength, tensile strain at break, tensile strength at tensile strain, tensile stress at break

[0164] Measurements are carried out after a conditioning time of 96 h for the test specimens (at 23 °C, 50 % relative humidity). Test specimens are prepared according to ISO 294-1.

[0165] Measure the tensile modulus according to ISO 527-2 (crosshead speed = 1 mm / min; 23 °C).

[0166] Measure the tensile strength according to ISO 527-2 (crosshead speed = 50 mm / min; 23 °C).

[0167] Measure the tensile strain at break according to ISO 527-2 (crosshead speed = 50 mm / min; 23 °C).

[0168] Determine the tensile strength at tensile strain according to ISO 527-2 at a tensile rate of 50 mm / min until the specimen breaks.

[0169] Determine the tensile stress at break according to ISO 527-2 (crosshead speed = 50 mm / min).

[0170] Determine the tensile stress at yield according to ISO 527-2 (crosshead speed = 50 mm / min).

[0171] Charpy notched impact strength

[0172] Determine the Charpy notched impact strength at 23 °C and -20 °C according to ISO 179 1eA using 80×10×4 mm 3 test bars injection molded according to EN ISO 1873-2 (after being placed at 23 °C and 50 % relative humidity for 96 h).

[0173] Determine the contents of isotactic polypropylene (iPP), polystyrene (PS), ethylene and polyamide-6 in Purpolen

[0174] Calibration standards were prepared by blending iPP with HDPE to generate a calibration curve. The film thickness of the calibration standards was 300 μm. To quantify the contents of iPP, PS, and PA 6 in the samples, quantitative infrared spectra were recorded in the solid state using a Bruker Vertex 70 FTIR spectrometer. Spectra were recorded on films (with a thickness of 50 to 100 μm and an area of 25 × 25 mm) prepared by compression molding at 190 °C and 4 mPa to 6 mPa. -1 to 400 cm -1 spectral range, a 6 mm aperture, a spectral resolution of 2 cm -1 , 16 background scans, 16 spectral scans, an interferogram zero filling factor of 32, and Norton Beer apodization, standard transmission FTIR spectroscopy was used.

[0175] The band absorption of iPP at 1167 cm -1 was measured, and the iPP content was quantified according to the calibration curve (absorbance / thickness (cm) versus iPP content (wt%)).

[0176] The band absorptions at 1601 cm -1 (PS) and 3300 cm -1 (PA 6) were measured, and the PS content and PA 6 content were quantified according to the calibration curve (absorbance / thickness (cm) versus PS content and PA 6 content (wt%)). The ethylene content was obtained by subtracting the contents of iPP, PS, and PA 6 from 100. This analysis was performed in duplicate.

[0177] B. Materials Used

[0178] Component A): Recycled coated polyolefin fabric substrate component

[0179] At ambient temperature, the recycled coated polyolefin fabric substrate in sheet form was shredded into small pieces of approximately the same size as standard polymer pellets using a Wittmann shredder. The polyolefin fabric substrate used was a PP-based knitted fabric with 2 thin layers (thicknesses of approximately 0.09 mm and 0.4 mm) on top, each thin layer containing a coating composition as defined in Table 1 and an amount of paint as specified below. These paints consisted of other non-polyolefin-based resins, mainly composed of polyurethane and polyacrylate.

[0180] The recycled coated polyolefin fabric substrate was analyzed via FTIR. FTIR analysis of three recycled coated polyolefin fabric substrates (identical except for color) showed that all 3 samples were 3-layer structures, and this three-layer structure included:

[0181] - Polyurethane-based resins and / or silicone-based resins in the paint layer

[0182] -EPR and PE plastomers in coatings

[0183] -PP homopolymer in textile substrates

[0184] Figures 1a to 1c , Figures 2a to 2c and Figures 3a to 3c Shown are the FTIR of blue, white and black recycled coated polyolefin fabric substrates.

[0185] Lacquer: 5.0 wt% based on the total weight of the coated polyolefin fabric substrate

[0186] Coating composition: 65 wt% based on the total weight of the coated polyolefin fabric substrate

[0187] Polypropylene fabric: 30 wt% based on the total weight of the coated polyolefin fabric substrate (thickness: 0.5 mm)

[0188] Table 1: Composition of coatings for recycled polyolefin fabric substrates.

[0189]

[0190]

[0191] Component B)

[0192] Recycled polymer blends (Purpolen PP)

[0193] Purpolen PP is a recycled polymer blend containing polyethylene and polypropylene as main components, obtained from mtm plastics GmbH, Untergebla, Germany.

[0194] Table 2: Composition of recycled polymer blends.

[0195]

[0196] The contents of Purpolen, PS and PA 6 (content also determined by FTIR) add up to 100% by weight.

[0197] Virgin homopolymer polypropylene (HF420FB)

[0198] HF420FB: HF420FB is a polypropylene homopolymer commercially available from Borealis, Austria, having a melt flow rate (230°C / 2.16 kg, ISO 1133) of 19.0 g / 10 min and a melting temperature (determined by DSC according to ISO 11357 / 03) of 1161°C.

[0199] C. Preparation of the Polymer Composition

[0200] The polymer compositions according to Examples IE1 to IE6 of the present invention are prepared by feeding Component A) into a co-rotating twin-screw side feeder (Extruder Prism TSE 24MC), which allows for precise feeding and metering of the material into the extruder. Component B) is fed into the same extruder in the form of pellets via the main hopper. In the extruder, Components A) and B) are melt-blended (at 230 °C, output rate 6 kg / hour), and then pelletized through an underwater cooling system. The obtained pellets are collected, dried, and submitted for testing. The materials according to CE1 and CE3 were not compounded. The amounts of the different components in the polymer compositions according to the examples of the present invention and the comparative examples, as well as the properties of the polymer compositions, can be collected from Table 3 and Table 4 below.

[0201] Table 3: Composition and properties of polymer compositions containing virgin homopolypropylene.

[0202]

[0203] n.d. = not determined.

[0204] Table 4: Composition and properties of polymer compositions containing recycled polymer blends.

[0205]

[0206]

[0207] D. Discussion of Results

[0208] As can be seen from Table 3, the addition of the recycled polyolefin fabric substrate to the virgin polypropylene significantly improves the toughness of the polymer composition (as represented by the Charpy notched impact strength at 23 °C), while the stiffness of the material remains at a good level. The experimental data according to Table 4 confirm that the said technical effect is also observed in the recycled polymer blends. In addition, the presence of the recycled polyolefin fabric substrate in the recycled polymer blends also significantly improves the elongation at break of the polymer composition.

Claims

1. A polymer composition comprising the following components: A) 5% to 35% by weight of a recycled coated polyolefin fabric substrate based on the total weight of the polymer composition; wherein the fabric substrate is coated with a polyolefin coating composition, and based on the total weight of component A), the content of the fabric substrate ranges from 10% to 45% by weight, and the content of the polyolefin coating composition ranges from 50% to 85% by weight, and the polyolefin coating composition comprises the following components: a1) 40 to 65% by weight of a vinyl plastomer, based on the weight of the coating composition, said vinyl plastomer having a density determined in the range of 0.857 g / cm 3 to 0.915 g / cm 3 and a MFR determined in the range of 0.5 g / 10 min to 30 g / 10 min at a temperature of 190 °C and a load of 2.16 kg, according to ISO 1133 2 ; and a2) 20% to 40% by weight of an alkenyl plastomer, based on the weight of the coating composition, said alkenyl plastomer having a density determined in the range of 0.850 g / cm 3 to 0.910 g / cm 3 in accordance with ISO 1183-1 and a MFR determined in the range of 0.01 g / 10 min to 30 g / 10 min at a temperature of 230 °C and a load of 2.16 kg in accordance with ISO 1133 2 ; B) 65% to 95% by weight of a homopolypropylene or a recycled polymer blend based on the total weight of the polymer composition, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:

1.

2. The polymer composition according to claim 1, wherein based on the total weight of component A), the content of the polyolefin coating composition in component A) ranges from 55% to 75% by weight.

3. The polymer composition according to claim 1, wherein based on the total weight of component A), the content of the polyolefin coating composition in component A) ranges from 60% to 70% by weight.

4. The polymer composition according to claim 1, wherein, the vinyl plastomer a1) is a copolymer of ethylene and at least one C3 to C10 α-olefin; and / or the propylene plastomer a2) is a copolymer of propylene and ethylene or a C4 to C10 α-olefin.

5. The polymer composition according to claim 4, wherein, the vinyl plastomer a1) is a copolymer of ethylene and 1-octene.

6. The polymer composition according to claim 1, wherein, The vinyl plastomer a1) has a density measured in the range of 0.860 g / cm 3 to 0.915 g / cm 3 in accordance with ISO 1183-1 and / or an MFR measured in the range of 2.5 g / 10 min to 12 g / 10 min at a temperature of 190 °C and a load of 2.16 kg in accordance with ISO 1133 2 ; and / or The propylene-based plastomer a2) has a density measured according to ISO 1183-1 in the range of 0.855 g / cm 3 to 0.900 g / cm 3 and / or a MFR measured according to ISO 1133 in the range of 3.0 g / 10 min to 22 g / 10 min at a temperature of 230 °C and a load of 2.16 kg 2 .

7. The polymer composition according to claim 6, wherein, The vinyl plastomer a1) has a density measured in the range of 0.865 g / cm 3 to 0.905 g / cm 3 in accordance with ISO 1183-1.

8. The polymer composition according to claim 1, wherein, component A) comprises a flame retardant a3).

9. The polymer composition according to claim 8, wherein, the flame retardant a3) comprises ammonium polyphosphate.

10. The polymer composition according to claim 8, wherein, the flame retardant a3) consists of ammonium polyphosphate.

11. The polymer composition according to claim 8, wherein, based on the total weight of the coating composition of component A), the content of component a3) in the polyolefin coating composition of component A) ranges from 5% to 20% by weight.

12. The polymer composition according to claim 11, wherein, based on the total weight of the coating composition of component A), the content of component a1) in the polyolefin coating composition of component A) ranges from 45% to 62% by weight; and / or based on the total weight of the coating composition of component A), the content of component a2) in the polyolefin coating composition of component A) ranges from 29% to 39% by weight; and / or based on the total weight of the coating composition of component A), the content of component a3) in the polyolefin coating composition of component A) ranges from 9% to 16% by weight.

13. The polymer composition according to claim 12, wherein, based on the total weight of the coating composition of component A), the content of component a1) in the polyolefin coating composition of component A) is in the range of 52% to 60% by weight; and / or based on the total weight of the coating composition of component A), the content of component a2) in the polyolefin coating composition of component A) is in the range of 30% to 34% by weight; and / or based on the total weight of the coating composition of component A), the content of component a3) in the polyolefin coating composition of component A) is in the range of 10% to 14% by weight.

14. The polymer composition according to claim 1, wherein, based on the total weight of the polymer composition, the content of component A) in the polymer composition is in the range of 9% to 31% by weight; and / or based on the total weight of the polymer composition, the content of component B) in the polymer composition is in the range of 69% to 91% by weight.

15. The polymer composition according to claim 14, wherein, based on the total weight of the polymer composition, the content of component A) in the polymer composition is in the range of 10% to 20% by weight; and / or based on the total weight of the polymer composition, the content of component B) in the polymer composition is in the range of 80% to 90% by weight.

16. The polymer composition according to claim 14, wherein, based on the total weight of the polymer composition, the content of component A) in the polymer composition is in the range of 19% to 31% by weight; and / or based on the total weight of the polymer composition, the content of component B) in the polymer composition is in the range of 69% to 81% by weight.

17. The polymer composition according to claim 1, wherein, the polymer composition comprises at least one additive selected from the group consisting of: slip agent, acid scavenger, antimicrobial agent, UV stabilizer, pigment, antioxidant, anti-blocking agent, additive carrier, nucleating agent, lubricant, processing aid, silicone-based scratch resistant agent, and mixtures thereof.

18. In the polymer composition according to claim 17, the additive is present in an amount of 0.1% to 10% by weight based on the total weight of the polymer composition.

19. In the polymer composition according to claim 18, the additive is present in an amount of 0.5% to 3% by weight based on the total weight of the polymer composition.

20. The polymer composition according to claim 1, wherein, component B) is a homopolypropylene having MFR measured according to ISO 1133 in the range from 10 g / 10 min to 30 g / 10 min at a temperature of 230 °C and a load of 2.16 kg 2 ; and / or a melting point measured in the range of 158 °C to 163 °C according to IO 11357-3.

21. The polymer composition according to claim 20, wherein, component B) is a homopolypropylene having MFR measured according to ISO 1133 in the range of 15 g / 10 min to 25 g / 10 min at a temperature of 230 °C and a load of 2.16 kg 2 .

22. The polymer composition according to claim 20, wherein, component B) is a homopolypropylene having MFR determined according to ISO 1133 in the range from 18 g / 10 min to 22 g / 10 min at a temperature of 230 °C and a load of 2.16 kg 2 .

23. The polymer composition according to claim 20, characterized in that component B) is a homopolypropylene which has a melting point determined according to IO 11357-3 in the range of 160 °C to 162 °C.

24. The polymer composition according to claim 1, characterized in that component B) is a recycled polymer blend comprising the b1) polypropylene and the b2) polyethylene, wherein the weight ratio of the b1) to the b2) is from 3:7 to 12:1; and wherein component B) comprises 80.0 wt% to 99.9 wt% of the polypropylene b1) and the polyethylene b2) based on the total weight of component B).

25. The polymer composition according to claim 24, characterized in that component B) comprises 90.0 wt% to 99.0 wt% of the polypropylene b1) and the polyethylene b2) based on the total weight of component B).

26. The polymer composition according to claim 24, characterized in that component B) comprises 94.0 wt% to 98.0 wt% of the polypropylene b1) and the polyethylene b2) based on the total weight of component B).

27. The polymer composition according to claim 1, characterized in that component B) comprises less than 5 wt% of a thermoplastic polymer different from the b1) and the b2) based on the total weight of component B); component B) comprises PA6 and less than 5 wt% of polystyrene.

28. The polymer composition according to claim 27, characterized in that component B) comprises less than 3 wt% of a thermoplastic polymer different from the b1) and the b2) based on the total weight of component B).

29. The polymer composition according to claim 27, characterized in that component B) comprises 0.01 wt% to 2 wt% of a thermoplastic polymer different from the b1) and the b2) based on the total weight of component B).

30. The polymer composition according to claim 27, characterized in that component B) comprises less than 4 wt% of PA 6 based on the total weight of component B).

31. The polymer composition according to claim 27, characterized in that component B) comprises 0 wt% to 3.5 wt% of PA 6 based on the total weight of component B).

32. The polymer composition according to claim 27, characterized in that component B) comprises 0.5 wt% to 3.5 wt% of polystyrene based on the total weight of component B).

33. The polymer composition according to claim 1, characterized in that component B) is recovered from waste plastic materials derived from post-consumer and / or post-industrial waste.

34. The polymer composition according to claim 1, characterized in that The MFR of component B) determined according to ISO 1133 at a temperature of 230 °C and a load of 2.16 kg 2 is in the range from 16 g / 10 min to 50 g / 10 min.

35. The polymer composition according to claim 34, characterized in that The MFR of component B) determined according to ISO 1133 at a temperature of 230 °C and a load of 2.16 kg 2 is in the range from 18 g / 10 min to 22 g / 10 min.

36. The polymer composition according to claim 1, wherein the fabric substrate comprises polypropylene.

37. The polymer composition according to claim 1, wherein the content of the fabric substrate is in the range of 20% to 35% by weight based on the total weight of component A).

38. A method for preparing a polymer composition according to any one of claims 1 to 37, the method comprising: obtaining a recycled coated polyolefin fabric substrate and pulverizing the recycled coated polyolefin fabric substrate to form a pulverized material; combining A) the pulverized material of the recycled coated polyolefin fabric substrate in an amount of 5% to 35% by weight based on the total weight of the polymer composition; wherein the fabric substrate is coated with a polyolefin coating composition, and based on the total weight of component A), the content of the fabric substrate is in the range of 10% to 45% by weight, and the content of the polyolefin coating composition is in the range of 50% to 85% by weight, and the polyolefin coating composition comprises the following components: a1) 40 to 65% by weight of a vinyl plastomer, based on the weight of the coating composition, said vinyl plastomer having a density measured in the range of 0.857 g / cm 3 to 0.915 g / cm 3 and a MFR measured in the range of 0.5 g / 10 min to 30 g / 10 min at a temperature of 190 °C and a load of 2.16 kg, according to ISO 1133 2 ; and a2) 20% to 40% by weight of an alkenyl plastomer, based on the weight of the coating composition, said alkenyl plastomer having a density measured in the range of 0.850 g / cm 3 to 0.910 g / cm 3 and a MFR measured in the range of 0.01 g / 10 min to 30 g / 10 min at a temperature of 230 °C and a load of 2.16 kg, according to ISO 1133 2 ; and B) a homopolypropylene or a recycled polymer blend in an amount of 65% to 95% by weight based on the total weight of the polymer composition, the recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:

1.

39. The method according to claim 38, the method comprising: combining in an extruder.

40. Use of component A) as a recycled coated polyolefin fabric substrate; the component A) is a recycled coated polyolefin fabric substrate, wherein the fabric substrate is coated with a polyolefin coating composition, and based on the total weight of component A), the content of the fabric substrate is in the range of 10% to 45% by weight, and the content of the polyolefin coating composition is in the range of 50% to 85% by weight, and the polyolefin coating composition comprises the following components: a1) 40 to 65% by weight of a vinyl plastomer, based on the weight of the coating composition, said vinyl plastomer having a density measured in the range of 0.850 g / cm 3 to 0.915 g / cm 3 in accordance with ISO 1183-1 and an MFR measured in the range of 0.5 g / 10 min to 30 g / 10 min at a temperature of 190 °C and a load of 2.16 kg in accordance with ISO 1133 2 ; and a2) 20% to 40% by weight of an alkenyl plastomer, based on the weight of the coating composition, said alkenyl plastomer having a density measured in the range of 0.860 g / cm 3 to 0.910 g / cm 3 and a MFR measured in the range of 0.01 g / 10 min to 30 g / 10 min at a temperature of 230 °C and a load of 2.16 kg according to ISO 1133 2 ; for increasing the Charpy notched impact strength of component B) measured according to ISO 179-1eA at 23 °C; the component B) is a homopolypropylene or a recycled polymer blend comprising b1) polypropylene and b2) polyethylene, wherein the weight ratio of b1) to b2) is from 3:7 to 12:1; whereby the component B) is present in an amount of 65% to 90% by weight based on the total weight of the component A) and the component B).

41. The use according to claim 40, wherein the propylene-based plastomer has an MFR determined according to ISO 1133 in the range from 0.5 g / 10 min to 30 g / 10 min at a temperature of 230 °C and a load of 2.16 kg 2 .

42. The use according to claim 40, wherein the component B) is present in an amount of 70% to 90% by weight based on the total weight of the component A) and the component B).

43. The use according to claim 40, wherein the component A) is present in an amount of 5% to 35% by weight based on the total weight of the component A) and the component B).

44. The use according to any one of claims 40 to 43, characterized in that the component B) is a homopolypropylene, and the Charpy notched impact strength of the component B) measured according to ISO 179-1eA at 23 °C is increased by at least 25%; or Component B) is a recycled polymer blend comprising the b1) polypropylene and the b2) polyethylene, wherein the weight ratio of the b1) to the b2) is from 3:7 to 12:1, and the Charpy notched impact strength of the Component B) measured at 23 °C according to ISO 179-1eA is increased by at least 10%.

45. The use according to claim 42, wherein, Component B) is a homopolypropylene, and the Charpy notched impact strength of the Component B) measured at 23 °C according to ISO 179-1eA is increased by 25% to 150%; or Component B) is a recycled polymer blend comprising the b1) polypropylene and the b2) polyethylene, and the Charpy notched impact strength of the Component B) measured at 23 °C according to ISO 179-1eA is increased by 10% to 100%.

46. The use according to any one of claims 40 to 43, wherein, Component B) is a recycled polymer blend comprising the b1) polypropylene and the b2) polyethylene, wherein the weight ratio of the b1) to the b2) is from 3:7 to 12:1, and the elongation at break of the Component B) measured according to ISO 527-2 is increased by at least 20%.

47. The use according to claim 46, wherein, the elongation at break of the Component B) measured according to ISO 527-2 is increased by 20% to 250%.

48. The use according to any one of claims 40 to 43, wherein, Component A) comprises a flame retardant a3), and the flame retardant a3) comprises ammonium polyphosphate.

49. The use according to claim 48, wherein, the flame retardant a3) consists of ammonium polyphosphate.

50. The use according to any one of claims 40 to 43, wherein, Component A) is used in a comminuted form.

51. The use according to claim 50, wherein, the comminuted form is selected from pellets, flakes, powders or granules.

52. An article comprising the polymer composition as defined in any one of claims 1 to 37.

53. The article according to claim 52, which is selected from the group consisting of consumer goods or household goods.

54. The article according to claim 52, which is selected from the group consisting of lids, closures and packaging containers, boxes, cutlery trays, trash cans.

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