High-fluidity propylene-based interpolymer composition

Abstract

A composition comprising the following components: a) at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, each interpolymer having the following characteristics: i) a melting point Tm of 60 ° C to 85 ° C; ii) a viscosity (177°C) of 3,000 cP to 30,000 cP; and b) at least one wax; c) at least one oil, The composition has a weight ratio of component b to component c of 0.30 to 4.0.

Description

Technical Field

[0001] (Cross - Reference to Related Applications) This application claims the benefit of priority of U.S. Provisional Patent Application No. 63 / 017,541, filed on April 29, 2020, the entire content of which is incorporated herein by reference.

Background Art

[0002] Modular carpet tile manufacturers are seeking a recyclable, low - viscosity alternative to bitumen for use as a carpet backing. This alternative needs to meet the processing and performance requirements of the market. Ethylene / octene random copolymers and block copolymers with low melt fluidity (melt index of about 30 g / 10 min at 190 °C with 2.16 kg) are used in commercially available hot melt adhesive (HMA) carpet backing products. HMA formulations containing polymers, tackifiers, waxes, and oils meet the performance requirements of modular carpet tiles, but the current formulations are 5 - 10 times more viscous than the current formulations of bitumen. As a result, current HMA formulations require special equipment to process, thereby limiting their marketability.

[0003] Adhesives for use as a backing for modular carpets need to have a low viscosity (less than 30,000 cP at 165 °C for non - filled formulations), good dimensional stability (when represented by Young's modulus), and high tensile strain at break. Also, assembled modular carpet tiles need to be able to be fully bent without cracking (good flexibility as indicated by high tensile strain at break).

[0004] U.S. Patent No. 7,700,707 discloses an adhesive containing a functionalized component and an olefin polymer. The olefin polymer contains 50 wt% or more of C3 - C30 α-olefins and at least 50 ppm of diene. The polymer has a weight average molecular weight (Mw) of 10,000 - 100,000 g / mol and a heat of fusion of 1 - 70 J / g in part. See Claim 1. The polymer is mixed with tackifiers, waxes, and / or oils and used in an adhesive formulation. See also U.S. Patent No. 7,524,910. U.S. Patent No. 7,294,681 discloses a branched olefin polymer having an Mw of 10,000 - 100,000 g / mol and having amorphous segments and semi-crystalline segments in part. See Claim 1. The polymer is mixed with tackifiers, waxes, and / or oils and used in an adhesive formulation.

[0005] U.S. Patent Application Publication No. 2016 / 0102429 discloses a carpet backing composition containing a first polymer component including a filler, a compatibilizer, and an elastomeric polymer. The compatibilizer provides a free radical source for bonding the first polymer component and the filler. See Claim 1. Polymers and compositions other than those described above for applications that may include carpet component parts are disclosed in the following references: U.S. Patent Nos. 9,051,683, 9,365,711, 7,357,971, U.S. Patent Application Publication No. 2011 / 0256335, International Publication Nos. 2016 / 029006, and 2009 / 086091.

[0006] However, the adhesive compositions in the art do not provide a low-viscosity (filled) polymer composition having the necessary mechanical properties useful for backing modular carpet tiles. Thus, there is a need for an adhesive composition that is low in viscosity for good processability on standard manufacturing lines and has improved performance in carpet backing formulations (e.g., optimal modulus of elasticity and high tensile strain at break). Preferably, such a composition is recyclable. These needs are met by the following invention.

SUMMARY OF THE INVENTION

[0007] A composition comprising the following components: a) At least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, each interpolymer having the following properties: i) A melting point Tm of 60°C to 85°C and, ii) A viscosity (at 177°C) of 3,000 cP to 30,000 cP, at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, b) At least one wax, and c) At least one oil, The composition has a weight ratio of component b to component c of 0.30 to 4.0.

DETAILED DESCRIPTION OF THE INVENTION

[0008] Compositions have been discovered that have improved mechanical properties (Young's modulus, tensile strain at break) and an overall low viscosity (at 165°C). These compositions are well suited as carpet backing materials, particularly for backing modular carpet tiles.

[0009] As described above, a composition comprising the following components: a) At least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, each interpolymer having the following properties: i) A melting point Tm (DSC) of 60°C to 85°C, and ii) A viscosity (at 177°C) of 3,000 cP to 30,000 cP, comprising at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, and b) At least one wax, and c) At least one oil, and The composition has a weight ratio of component b to component c of 0.30 to 4.0, and a composition is provided.

[0010] The composition of the present invention may include one or more embodiments as described herein. Each component (a, b, c) may include one or more embodiments as described herein.

[0011] In each being one embodiment or a combination of two or more embodiments described herein, component a has a Tm of 62°C or higher, or 63°C or higher, or 64°C or higher, or 65°C or higher, or 66°C or higher, or 67°C or higher, or 68°C or higher. Tm is determined from DSC as discussed in the "Test Methods" section. In each being one embodiment or a combination of two or more embodiments described herein, component a has a Tm of 84°C or lower, or 83°C or lower, or 82°C or lower, or 81°C or lower, or 80°C or lower, or 79°C or lower, or 78°C or lower, or 77°C or lower, or 76°C or lower.

[0012] In each embodiment described herein or a combination of two or more embodiments, component a has a viscosity (at 177 °C) of 3,500 cP or more, or 4,000 cP or more, or 4,200 cP or more, or 4,400 cP or more, or 4,600 cP or more, or 4,800 cP or more, or 5,000 cP or more, or 5,200 cP or more, or 5,400 cP or more, or 5,600 cP or more, or 5,800 cP or more, or 6,000 cP or more, or 6,200 cP or more, or 6,400 cP or more, or 6,600 cP or more, or 6,800 cP or more, or 7,000 cP or more, or 7,200 cP or more. In each embodiment described herein or a combination of two or more embodiments, component a has a viscosity (at 177 °C) of 28,000 cP or less, or 26,000 cP or less, or 24,000 cP or less, or 22,000 cP or less, or 20,000 cP or less, or 18,000 cP or less, or 16,000 cP or less, or 15,000 cP or less, or 14,000 cP or less, or 13,000 cP or less, or 12,000 cP or less, or 11,000 cP or less, or 10,000 cP or less.

[0013] In each embodiment described herein or a combination of two or more embodiments, the composition has a weight ratio of component b to component c of 0.35 or more, or 0.40 or more, or 0.45 or more, or 0.50 or more, or 0.52 or more, or 0.54 or more, or 0.56 or more, or 0.58 or more, or 0.60 or more, or 0.62 or more. In each embodiment described herein or a combination of two or more embodiments, the composition has a weight ratio of component b to component c of 3.9 or less, or 3.8 or less, or 3.7 or less, or 3.6 or less, or 3.5 or less, or 3.4 or less, or 3.3 or less, or 3.2 or less, or 3.0 or less, or 2.8 or less, or 2.6 or less, or 2.4 or less, or 2.2 or less, or 2.0 or less, or 1.8 or less, or 1.6 or less.

[0014] In each embodiment described herein or a combination of two or more embodiments, component a has a density of 0.860 g / cc or more, or 0.861 g / cc or more, or 0.862 g / cc or more, or 0.863 g / cc or more, or 0.864 g / cc or more, or 0.865 g / cc or more, or 0.866 g / cc or more, or 0.867 g / cc or more, or 0.868 g / cc (1 cc = 1 cm 3 ) or more. In each embodiment described herein or a combination of two or more embodiments, component a has a density of 0.874 g / cc or less, or 0.873 g / cc or less, or 0.872 g / cc or less, or 0.871 g / cc or less, or 0.870 g / cc or less.

[0015] In each embodiment described herein or a combination of two or more embodiments, component a is a propylene / ethylene interpolymer and is further a propylene / ethylene copolymer.

[0016] In each embodiment described herein or a combination of two or more embodiments, component a has a density / Tm ratio of 0.008 or more, or 0.009 or more, or 0.010 or more, or 0.011 (g / (cc·°C)) or more. In each embodiment described herein or a combination of two or more embodiments, component a has a density / Tm ratio of 0.020 or less, or 0.019 or less, or 0.017 or less, or 0.016 or less, or 0.015 or less, or 0.014 (g / (cc·°C)) or less.

[0017] In each embodiment described herein or a combination of two or more embodiments, the composition further comprises component d): at least one filler.

[0018] In each embodiment described herein or a combination of two or more embodiments, the composition has a weight ratio of component d to component a of 5.00 or more, or 6.00 or more, or 7.00 or more, or 8.00 or more. In each embodiment described herein or a combination of two or more embodiments, the composition has a weight ratio of component d to component a of 15.0 or less, or 14.0 or less, or 13.0 or less, or 12.0 or less, or 11.0 or less, or 10.0 or less.

[0019] In each embodiment described herein or a combination of two or more embodiments, the composition further comprises component e): an anhydride-functionalized and / or carboxylic acid-functionalized olefin-based polymer, and further comprises an anhydride-grafted and / or carboxylic acid-grafted olefin-based polymer. In each embodiment described herein or a combination of two or more embodiments, component e is an anhydride-functionalized and / or carboxylic acid-functionalized propylene-based polymer, and further is an anhydride-grafted and / or carboxylic acid-grafted propylene-based polymer.

[0020] In each embodiment described herein or a combination of two or more embodiments, the composition has a weight ratio of component a to component e of 15 or more, or 16 or more, or 17 or more, or 18 or more, or 19 or more, or 20 or more. In each embodiment described herein or a combination of two or more embodiments, the composition has a weight ratio of component a to component e of 30 or less, or 28 or less, or 26 or less, or 25 or less, or 24 or less, or 23 or less, or 22 or less.

[0021] In each embodiment described herein or a combination of two or more embodiments, the composition further comprises component f): at least one tackifier.

[0022] In each embodiment described herein or a combination of two or more embodiments, the composition containing component d has a viscosity (at 165°C) of 10,000 cP or more, or 12,000 cP or more, or 14,000 cP or more, or 16,000 cP or more, or 18,000 cP or more, or 20,000 cP or more. In each embodiment described herein or a combination of two or more embodiments, the composition containing component d has a viscosity (at 165°C) of 50,000 cP or less, or 48,000 cP or less, or 46,000 cP or less, or 44,000 cP or less, or 42,000 cP or less, or 40,000 cP or less, or 38,000 cP or less, or 36,000 cP or less, or 34,000 cP or less.

[0023] In each embodiment described herein or a combination of two or more embodiments, the composition has a tensile strain at break of 6.0% or more, or 6.5% or more, or 7.0% or more, or 7.5% or more, or 8.0% or more, or 9.0% or more. In each embodiment described herein or a combination of two or more embodiments, the composition has a tensile strain at break of 10% or more, or 11% or more, or 12% or more, or 13% or more, or 14% or more, or 15% or more.

[0024] In each embodiment described herein or a combination of two or more embodiments, the composition has a Young's modulus of 100 MPa or more, or 105 MPa or more, or 110 MPa or more, or 112 MPa or more, or 114 MPa or more, or 116 MPa or more, or 118 MPa or more, or 120 MPa or more. In each embodiment described herein or a combination of two or more embodiments, the composition has a Young's modulus of 150 MPa or more, or 200 MPa or more, or 250 MPa or more, or 300 MPa or more.

[0025] Articles are also provided that include at least one component formed from a composition of any one embodiment or combination of two or more embodiments described herein. In each embodiment or combination of two or more embodiments described herein, the article is a carpet.

[0026] In each embodiment or combination of two or more embodiments described herein, the compositions of the present invention differ in one or more characteristics such as monomer type and / or amount, Tm, Tc, Tg, density, viscosity (177 °C), Mn, Mw, MWD, or any combination thereof, and further differ in one or more additional characteristics such as monomer type and / or amount, Tm, Tc, Tg, density, viscosity (177 °C), or any combination thereof, and further include a thermoplastic polymer different from component a. Polymers include, but are not limited to, ethylene-based polymers, propylene-based polymers, and olefin multiblock interpolymers. Suitable ethylene-based polymers include, but are not limited to, linear low density polyethylene (LLDPE), very low density polyethylene (VLDPE), ultra-low density polyethylene (ULDPE), homogeneously branched linear ethylene-based polymers, and homogeneously branched substantially linear ethylene-based polymers (i.e., homogeneously branched long chain branched ethylene polymers). Examples of propylene-based polymers include polypropylene homopolymers and other propylene / ethylene copolymers.

[0027] Wax Examples of waxes include, but are not limited to, paraffin wax, microcrystalline wax, polyethylene wax, polypropylene wax, Fischer-Tropsch wax, oxidized Fischer-Tropsch wax, hydroxystearamide wax, fatty acid amide wax, and combinations thereof. Further examples of waxes include animal waxes, vegetable waxes, and combinations thereof.

[0028] Oil Examples of oils include, but are not limited to, mineral oils such as naphthenic, paraffinic, or hydrogenated (white) oils, vegetable oils, animal oils, and derivatives thereof, petroleum-derived oils, and combinations thereof. Further examples of oils include liquid polyolefins such as liquid polybutene, and phthalic acid esters such as diisodecyl phthalate, diisononyl phthalate, dioctyl phthalate, and combinations thereof, but are not limited thereto.

[0029] Tackifier Tackifiers are known in the art and can be solid, semi-solid, or liquid at room temperature. Examples of tackifiers include, but are not limited to, aliphatic hydrocarbon resins (hydrogenated or non-hydrogenated), aromatic hydrocarbon resins (hydrogenated or non-hydrogenated), hydrogenated polycyclopentadiene resins, polycyclopentadiene resins, gum rosin, gum rosin esters, wood rosin, wood rosin esters, tall oil rosin, tall oil rosin esters, polyterpenes, aromatic-modified polyterpenes, terpene phenols, aromatic-modified hydrogenated polycyclopentadiene resins, hydrogenated aliphatic resins, hydrogenated aliphatic aromatic resins, hydrogenated terpenes and modified terpenes, hydrogenated rosin acids, hydrogenated rosin esters, derivatives thereof, and combinations thereof. Preferred tackifiers are selected from hydrogenated aliphatic hydrocarbon resins and hydrogenated aromatic hydrocarbon resins.

[0030] Additive The composition of the present invention may contain one or more additives. Non-limiting examples of suitable additives include fillers, antioxidants, flame retardants, and antibacterial agents. Examples of fillers include, but are not limited to, calcium carbonate (CaCO3), coal fly ash, barium sulfate, and clay (aluminum silicate hydroxide). The fillers may also include high heat content fillers such as limestone, marble, quartz, silica, and barite (BaSO4).

[0031] In an embodiment, the composition contains at least one antioxidant. The antioxidant protects the composition from degradation caused by reactions with oxygen induced by heat, light, or residual catalysts present in commercially available materials. Suitable antioxidants include those commercially available from BASF, such as the hindered phenols IRGANOX 1010, IRGANOX 1076, and IRGANOX 1726. These primary antioxidants, which act as radical scavengers, can be used alone or in combination with other antioxidants such as phosphite antioxidants like IRGAFOS 168 available from BASF. In an embodiment, the composition contains at least one antioxidant in an amount of 0.1 wt%, or 0.2 wt%, or 0.3 wt% to 0.6 wt%, or 0.8 wt% or 1.0 wt%. The weight percent is based on the total weight of the composition.

[0032] Definitions Unless otherwise specified, or indicated by context, or not conventional in the art, all parts and percentages are by weight and all test methods are the latest as of the filing date of this disclosure.

[0033] As used herein, the term "composition" includes a composition and a mixture of materials including reaction products and decomposition products formed from the materials of the composition. Any reaction products or decomposition products are typically present in trace or residual amounts.

[0034] As used herein, the term "polymer" refers to a polymeric compound prepared by polymerizing monomers of the same or different types. Thus, the general term "polymer" includes the term "homopolymer" (used to refer to a polymer prepared from only one type of monomer, with the understanding that trace impurities may be incorporated into the polymer structure), and the term "interpolymer" as defined hereinafter. Trace impurities such as catalyst residues may be incorporated into and / or within the polymer. Typically, the polymer is stabilized with one or more stabilizers such as one or more antioxidants in very small amounts (in "ppm" amounts).

[0035] As used herein, the term "interpolymer" refers to a polymer prepared by the polymerization of at least two different types of monomers. Thus, the term "interpolymer" includes the term "copolymer" (used to refer to a polymer prepared from two different types of monomers), and polymers prepared from more than two different types of monomers.

[0036] As used herein, the term "olefinic polymer" refers to a polymer that contains (based on the weight of the polymer) 50 weight % or more than half by weight of an olefin such as ethylene or propylene in polymerized form, and optionally may contain one or more comonomers.

[0037] As used herein, the term "propylene-based polymer" refers to a polymer that contains (based on the weight of the polymer) more than half by weight of propylene in polymerized form, and optionally may contain one or more comonomers.

[0038] As used herein, the term "propylene / ethylene interpolymer" refers to a random interpolymer that contains (based on the weight of the polymer) more than half by weight of propylene and ethylene in polymerized form.

[0039] As used herein, the term "propylene / ethylene copolymer" refers to a random copolymer in polymerized form that contains, as the only two monomers, propylene monomer in a majority weight percent (based on the weight of the copolymer) and ethylene.

[0040] As used herein, the term "propylene / α-olefin interpolymer" refers to a random interpolymer in polymerized form that contains propylene in a majority weight percent (based on the weight of the interpolymer) and α-olefin.

[0041] As used herein, the term "propylene / α-olefin copolymer" refers to a random copolymer in polymerized form that contains, as the only two monomers, propylene monomer in a majority weight percent (based on the weight of the copolymer) and α-olefin.

[0042] As used herein, the term "ethylene-based polymer" refers to a polymer in polymerized form that contains 50 wt% or a majority weight percent (based on the weight of the polymer) of ethylene and optionally may contain one or more comonomers.

[0043] As used herein, the term "anhydride-functionalized and / or carboxylic acid-functionalized olefin-based polymer" refers to an olefin-based polymer that contains an anhydride functional group and / or a carboxylic acid functional group.

[0044] As used herein, the term "anhydride-functionalized and / or carboxylic acid-functionalized propylene-based polymer" refers to a propylene-based polymer that contains an anhydride functional group and / or a carboxylic acid functional group.

[0045] The terms "comprising", "including", "having", and their derivatives are not intended to exclude the presence of any additional components, steps, or procedures, whether or not specifically disclosed. To avoid any doubt, all compositions claimed through the use of the term "comprising" may include any additional additives, adjuvants, or compounds, whether polymeric or otherwise, unless there is a contradictory description. In contrast, the term "consisting essentially of" excludes any other components, steps, or procedures from the scope of any subsequent description, except for those that are not essential for operation. The term "consisting of" excludes any component, step, or procedure not specifically depicted or listed.

[0046] Enumerating the characteristics of some compositions A] A composition comprising the following components: a) At least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, each interpolymer having the following characteristics: i) A melting point Tm (DSC) of 60°C to 85°C, and ii) A viscosity (177°C) of 3,000 cP to 30,000 cP, comprising at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, and b) At least one wax, and c) At least one oil, and The composition has a weight ratio of component b to component c of 0.30 to 4.0.

[0047] B] The composition according to A] above, wherein component a has a Tm of 62°C or higher, or 63°C or higher, or 【64°C or higher, or 65°C or higher, or 66°C or higher, or 67°C or higher, or 68°C or higher】. Tm determined from DSC as discussed in the "Test Methods" section.

[0048] Note: There are multiple "or" expressions in item B of the original text, and the repeated part in the brackets is for better understanding. You can adjust it according to your actual needs. C] The composition a has a Tm of 84 °C or lower, or 83 °C or lower, or 82 °C or lower, or 81 °C or lower, or 80 °C or lower, or 79 °C or lower, or 78 °C or lower, or 77 °C or lower, or 76 °C or lower, and is the composition described in A] or B] above.

[0049] D] The composition a has a viscosity (at 177 °C) of 3,500 cP or higher, or 4,000 cP or higher, or 4,200 cP or higher, or 4,400 cP or higher, or 4,600 cP or higher, or 4,800 cP or higher, or 5,000 cP or higher, or 5,200 cP or higher, or 5,400 cP or higher, or 5,600 cP or higher, or 5,800 cP or higher, or 6,000 cP or higher, or 6,200 cP or higher, or 6,400 cP or higher, or 6,600 cP or higher, or 6,800 cP or higher, or 7,000 cP or higher, or 7,200 cP or higher, and is the composition described in any one of A] to C] (from A] to C]) above.

[0050] E] The composition a has a viscosity (at 177 °C) of 28,000 cP or lower, or 26,000 cP or lower, or 24,000 cP or lower, or 22,000 cP or lower, or 20,000 cP or lower, or 18,000 cP or lower, or 16,000 cP or lower, or 15,000 cP or lower, or 14,000 cP or lower, or 13,000 cP or lower, or 12,000 cP or lower, or 11,000 cP or lower, or 10,000 cP or lower, and is the composition described in any one of A] to D] above.

[0051] F] The composition has a weight ratio of component b to component c of 0.35 or higher, or 0.40 or higher, or 0.45 or higher, or 0.50 or higher, or 0.52 or higher, or 0.54 or higher, or 0.56 or higher, or 0.58 or higher, or 0.60 or higher, or 0.62 or higher, and is the composition described in any one of A] to E] above.

[0052] The composition described in any one of A] to F] above has a weight ratio of component b to component c of 3.9 or less, or 3.8 or less, or 3.7 or less, or 3.6 or less, or 3.5 or less, or 3.4 or less, or 3.3 or less, or 3.2 or less, or 3.0 or less, or 2.8 or less, or 2.6 or less, or 2.4 or less, or 2.2 or less, or 2.0 or less, or 1.8 or less, or 1.6 or less.

[0053] H] The composition described in any one of A] to G] above has a density / Tm ratio of component a of 0.008 or more, or 0.009 or more, or 0.010 or more, or 0.011 or more. Unit = (g / (cc·°C)).

[0054] I] The composition described in any one of A] to H] above has a density / Tm ratio of component a of 0.020 or less, or 0.019 or less, or 0.017 or less, or 0.016 or less, or 0.015 or less, or 0.014 or less. Unit = (g / (cc·°C)).

[0055] J] Component a has a density of 0.860 g / cc or more, or 0.861 g / cc or more, or 0.862 g / cc or more, or 0.863 g / cc or more, or 0.864 g / cc or more, or 0.865 g / cc or more, or 0.866 g / cc or more, or 0.867 g / cc or more, or 0.868 g / cc or more (1 cc = 1 cm 3 ) and is the composition described in any one of A] to I] above.

[0056] K] Component a has a density of 0.874 g / cc or less, or 0.873 g / cc or less, or 0.872 g / cc or less, or 0.871 g / cc or less, or 0.870 g / cc or less and is the composition described in any one of A] to J] above.

[0057] L] Component a has a crystallization temperature Tc of 15°C or more, or 16°C or more, or 17°C or more, or 18°C or more, or 19°C or more, or 20°C or more and is the composition described in any one of A] to K] above.

[0058] The composition according to any one of A] to L] above, wherein component a has a crystallization temperature Tc of 40 °C or lower, or 39 °C or lower, or 38 °C or lower, or 37 °C or lower, or 36 °C or lower, or 35 °C or lower, or 34 °C or lower, or 33 °C or lower, or 32 °C or lower.

[0059] The composition according to any one of A] to M] above, wherein component a has a glass transition temperature Tg of -35 °C or higher, or -34 °C or higher, or -33 °C or higher, or -32 °C or higher, or -31 °C or higher.

[0060] The composition according to any one of A] to N] above, wherein component a has a glass transition temperature Tg of -25 °C or lower, or -26 °C or lower, or -27 °C or lower, or -28 °C or lower, or -29 °C or lower.

[0061] The composition according to any one of A] to O] above, wherein component a has a weight average molecular weight Mw of 30,000 g / mol or higher, or 32,000 g / mol or higher, or 34,000 g / mol or higher, or 36,000 g / mol or higher, or 38,000 g / mol or higher, or 40,000 g / mol or higher, or 42,000 g / mol or higher, or 43,000 g / mol or higher.

[0062] The composition according to any one of A] to P] above, wherein component a has a weight average molecular weight Mw of 60,000 g / mol or lower, or 58,000 g / mol or lower, or 56,000 g / mol or lower, or 54,000 g / mol or lower, or 52,000 g / mol or lower, or 50,000 g / mol or lower, or 48,000 g / mol or lower, or 47,000 g / mol or lower.

[0063] The composition according to any one of A] to Q] above, wherein component a has a number average molecular weight Mn of 10,000 g / mol or higher, or 12,000 g / mol or higher, or 14,000 g / mol or higher, or 16,000 g / mol or higher, or 18,000 g / mol or higher.

[0064] The composition according to any one of A] to R] above, wherein component a has a number average molecular weight Mn of 32,000 g / mol or less, or 30,000 g / mol or less, or 28,000 g / mol or less, or 26,000 g / mol or less, or 24,000 g / mol or less, or 22,000 g / mol or less, or 20,000 g / mol or less.

[0065] The composition according to any one of A] to S] above, wherein component a has a molecular weight distribution MWD (=Mw / Mn) of 1.80 or more, or 2.00 or more, or 2.10 or more, or 2.20 or more, or 2.30 or more.

[0066] The composition according to any one of A] to T] above, wherein component a has a molecular weight distribution MWD of 3.00 or less, or 2.80 or less, or 2.70 or less, or 2.60 or less, or 2.50 or less, or 2.40 or less.

[0067] The composition according to any one of A] to U] above, wherein component a is a propylene / ethylene interpolymer and further a propylene / ethylene copolymer.

[0068] The composition according to any one of A] to U] above, wherein component a is a propylene / α-olefin interpolymer and further a propylene / α-olefin copolymer.

[0069] The composition according to W] above, wherein the α-olefin is a C4 - C20 α-olefin, further a C4 - C10 α-olefin, and further a C4 - C8 α-olefin.

[0070] The composition according to any one of A] to X] above, wherein the composition contains a filler of 1.00 wt% or less, or 0.50 wt% or less, or 0.20 wt% or less, or 0.10 wt% or less, or 0.05 wt% or less based on the weight of the composition.

[0071] The composition according to any one of A] to Y] above, wherein the composition does not contain a filler.

[0072] AA] The composition containing no filler has a viscosity (at 165 °C) of 800 cP or more, or 900 cP or more, or 1000 cP or more, or 1100 cP or more, or 1200 cP or more, and is the composition according to any one of A] to Z] above.

[0073] BB] The composition containing no filler has a viscosity (at 165 °C) of 3000 cP or less, or 2800 cP or less, or 2600 cP or less, or 2400 cP or less, or 2200 cP or less, or 2200 cP or less, or 1800 cP or less, or 1600 cP or less, or 1400 cP or less, and is the composition according to any one of A] to AA] above.

[0074] CC] The composition containing no filler is The composition according to any one of A] to BB] above, containing component a of 34% by weight or more, or 36% by weight or more, or 38% by weight or more, or 40% by weight or more in terms of the weight of the composition.

[0075] DD] The composition containing no filler is the composition according to any one of A] to CC] above, containing component a of 50% by weight or less, or 48% by weight or less, or 46% by weight or less, or 44% by weight or less in terms of the weight of the composition.

[0076] EE] The composition containing no filler is the composition according to any one of A] to DD] above, containing in total components a, b, and c of 40% by weight or more, or 42% by weight or more, or 44% by weight or more, or 46% by weight or more, or 48% by weight or more, or 50% by weight or more, or 52% by weight or more in terms of the weight of the composition.

[0077] FF] The composition containing no filler is the composition according to any one of A] to EE] above, containing in total components a, b, and c of 70% by weight or less, or 68% by weight or less, or 66% by weight or less, or 64% by weight or less, or 62% by weight or less, or 60% by weight or less, or 58% by weight or less in terms of the weight of the composition.

[0078] The composition of GG] further comprises component d): at least one filler, and is the composition according to any one of A] to X] above.

[0079] The composition of HH] has a weight ratio of component d to component a of 5.00 or more, or 6.00 or more, or 7.00 or more, or 8.00 or more, and is the composition according to GG] above.

[0080] The composition of II] has a weight ratio of component d to component a of 15.0 or less, or 14.0 or less, or 13.0 or less, or 12.0 or less, or 11.0 or less, or 10.0 or less, and is the composition according to GG] or HH] above.

[0081] The composition of JJ] contains component d in an amount of 55.0% by weight or more, or 60.0% by weight or more, or 65.0% by weight or more, or 70.0% by weight or more, or 75.0% by weight or more, or 77.0% by weight or more, based on the weight of the composition, and is the composition according to any one of GG] to II] above.

[0082] The composition of KK] contains component d in an amount of 90.0% by weight or less, or 88.0% by weight or less, or 86.0% by weight or less, or 84.0% by weight or less, or 82.0% by weight or less, or 80.0% by weight or less, based on the weight of the composition, and is the composition according to any one of GG] to JJ] above.

[0083] The composition of LL] further comprises component e): an anhydride-functionalized and / or carboxylic acid-functionalized olefin polymer, and further comprises an anhydride-grafted and / or carboxylic acid-grafted olefin polymer, and is the composition according to any one of A] to KK] above.

[0084] Component e in MM] is an anhydride-functionalized and / or carboxylic acid-functionalized propylene polymer, and further is an anhydride-grafted and / or carboxylic acid-grafted propylene polymer, and is the composition according to LL] above.

[0085] The composition described in the above [[LL]] or [[MM]] has a weight ratio of component a to component e of 15 or more, or 16 or more, or 17 or more, or 18 or more, or 19 or more, or 20 or more.

[0086] The composition described in any one of the above [[LL]] - [[NN]] has a weight ratio of component a to component e of 30 or less, or 28 or less, or 26 or less, or 25 or less, or 24 or less, or 23 or less, or 22 or less.

[0087] The composition described in any one of the above [[A]] - [[OO]] further contains component f): at least one tackifier.

[0088] The composition described in the above [[PP]] has a weight ratio of component a to component f of 0.80 or more, or 0.85 or more, or 0.90 or more, or 0.95 or more.

[0089] The composition described in the above [[PP]] or [[QQ]] has a weight ratio of component a to component f of 1.20 or less, or 1.15 or less, or 1.10 or less, or 1.05 or less, or 1.00 or less.

[0090] The composition containing component d described in any one of the above [[GG]] - [[RR]] contains component a at 5.0 wt% or more, or 6.0 wt% or more, or 7.0 wt% or more, or 8.0 wt% or more, in terms of the weight of the composition.

[0091] The composition containing component d described in any one of the above [[GG]] - [[SS]] contains component a at 15.0 wt% or less, or 14.0 wt% or less, or 13.0 wt% or less, or 12.0 wt% or less, or 11.0 wt% or less, or 10.0 wt% or less, in terms of the weight of the composition.

[0092] The composition containing component d contains, in terms of the weight of the composition, 5.0% by weight or more, or 6.0% by weight or more, or 7.0% by weight or more, or 8.0% by weight or more, or 9.0% by weight or more, or 10.0% or more of the total of components a, b, and c, and is the composition according to any one of the above GG]~TT].

[0093] The composition containing component d contains, in terms of the weight of the composition, 20% by weight or less, or 18% by weight or less, or 16% by weight or less, or 14% by weight or less, or 12% by weight or less of the total of components a, b, and c, and is the composition according to any one of the above GG]~UU].

[0094] The composition containing component d has a viscosity (at 165 °C) of 10,000 cP or more, or 12,000 cP or more, or 14,000 cP or more, or 16,000 cP or more, or 18,000 cP or more, or 20,000 cP or more, and is the composition according to any one of the above GG]~VV].

[0095] The composition containing component d has a viscosity (at 165 °C) of 50,000 cP or less, or 48,000 cP or less, or 46,000 cP or less, or 44,000 cP or less, or 42,000 cP or less, or 40,000 cP or less, or 38,000 cP or less, or 36,000 cP or less, or 34,000 cP or less, and is the composition according to any one of the above GG]~WW].

[0096] The ratio of "the viscosity (at 165 °C) of the composition containing component d" to "the viscosity (at 165 °C) of the composition not containing component d" is 3.0 or more, or 5.0 or more, or 7.0 or more, or 10.0 or more, or 12.0 or more, or 14.0 or more, or 16.0 or more, or 18.0 or more, or 20.0 or more, or 22.0 or more, or 24.0 or more, and is the composition according to any one of the above A]~XX].

[0097] The ratio of the viscosity (at 165 °C) of the composition containing component d to the viscosity (at 165 °C) of the composition not containing component d is 65 or less, or 55 or less, or 50 or less, or 48 or less, or 46 or less, or 44 or less, or 42 or less, or 40 or less, or 38 or less, or 36 or less, or 34 or less, or 32 or less, or 30 or less, and is the composition according to any one of A] to YY] above.

[0098] A3] The composition has a tensile strain at break of 6.0% or more, or 6.5% or more, or 7.0% or more, or 7.5% or more, or 8.0% or more, or 9.0% or more, and is the composition according to any one of A] to ZZ] above.

[0099] B3] The composition has a tensile strain at break of 10% or more, or 11% or more, or 12% or more, or 13% or more, or 14% or more, or 15% or more, and is the composition according to any one of A] to A3] above.

[0100] C3] The composition has a tensile strain at break of 60% or less, or 50% or less, or 40% or less, and is the composition according to any one of A] to B3] above.

[0101] D3] The composition has a Young's modulus of 100 MPa or more, or 105 MPa or more, or 110 MPa or more, or 112 MPa or more, or 114 MPa or more, or 116 MPa or more, or 118 MPa or more, or 120 MPa or more, and is the composition according to any one of A] to C3] above.

[0102] E3] The composition has a Young's modulus of 150 MPa or more, or 200 MPa or more, or 250 MPa or more, or 300 MPa or more, and is the composition according to any one of A] to D3] above.

[0103] F3] The composition has a Young's modulus of 1000 MPa or less, or 900 MPa or less, or 800 MPa or less, or 700 MPa or less, and is the composition according to any one of A] to E3] above.

[0104] The composition according to any one of A] to F3] above, further comprising a thermoplastic polymer different from component a, in one or more characteristics such as the type and / or amount of monomers, Tm, Tc, Tg, density, viscosity (177 °C), Mn, Mw, MWD, or any combination thereof, and in one or more further characteristics such as the type and / or amount of monomers, Tm, Tc, Tg, density, viscosity (177 °C), or any combination thereof.

[0105] H3] An article comprising at least one component formed from the composition according to any one of A] to G3] above.

[0106] I3] The article according to H3], wherein the article is a carpet.

[0107] Test method Differential Scanning Calorimetry (DSC) Differential scanning calorimetry (DSC) is used to measure the Tm, Tc, Tg, and crystallinity of propylene-based (PP) samples and ethylene-based (PE) samples. Each sample (0.5 g) was compression molded into a film at 190 °C for 10 - 15 seconds at 25000 psi. A film sample of approximately 5 - 8 mg was weighed and placed in a DSC pan. The lid was crimped onto the pan to ensure a closed atmosphere. The sample pan was placed in the DSC cell, and then heated to a temperature of 230 °C for PP (180 °C for PE) at a rate of approximately 10 °C / min. The sample was held at this temperature for 3 minutes. Then, the sample was cooled to -60 °C for PP (-90 °C for PE) at a rate of 10 °C / min and held isothermally at that temperature for 3 minutes. Next, the sample was heated at a rate of 10 °C / min until completely melted (second heating). Unless otherwise stated, the melting point (Tm) and glass transition temperature (Tg) of each polymer sample were determined from the second heat curve, and the crystallization temperature (Tc) was determined from the first cooling curve. The Tg and the peak temperatures of Tm and Tc, respectively, were recorded. The percent crystallinity can be calculated by dividing the heat of fusion (Hf) determined from the second heat curve by the theoretical heat of fusion of 165 J / g for PP (292 J / g for PE) and multiplying this amount by 100 (e.g., percent crystallinity = (Hf / 165 J / g) × 100 (for PP)).

[0108] Gel Permeation Chromatography (GPC) - Propylene-based Polymer A high-temperature gel permeation chromatography (GPC) system equipped with a Robotic Assistant Deliver (RAD) system for sample preparation and sample injection was used. The concentration detector was an infrared detector (IR4) manufactured by Polymer Char Inc. (Valencia, Spain). Data collection was performed using a Polymer Char DM100 data collection box. The system was equipped with an on-line solvent degassing device manufactured by Agilent. The column compartment was operated at 150 °C. The columns were four Mixed A LS 30 cm, 20 micrometer columns. The solvent was 1,2,4-trichlorobenzene (TCB) purged with nitrogen (N2) containing approximately "200 ppm" of 2,6-di-t-butyl-4-methylphenol (BHT). The flow rate was 1.0 mL / min and the injection volume was 200 μL. The "2 mg / mL" sample concentration was prepared by dissolving the sample in TCB (containing 200 ppm of BHT) purged with N2 and preheated at 160 °C with gentle stirring for 2.5 hours.

[0109] The GPC column settings were calibrated by using 20 narrow molecular weight distribution polystyrene (PS) standards. The molecular weight (MW) of the standards ranged from 580 to 8,400,000 g / mol and the standards were incorporated into six "cocktail" mixtures. Each standard mixture had at least one order of magnitude spacing between the individual molecular weights. The equivalent polypropylene molecular weight of each PS standard was calculated using the reported Mark-Houwink coefficients for polypropylene (Th.G. Scholte, N.L.J. Meijerink, H.M. Schoffeleers and A.M.G. Brands, J. Appl. Polym. Sci., 29, 3763 - 3782 (1984)) and polystyrene (E.P. Otocka, R.J. Roe, N.Y. Hellman, P.M. Muglia, Macromolecules, 4, 507 (1971)) using the following equation (1): [Equation] where MPP is the PP equivalent MW, M PS is the PS equivalent MW. The values of logK and a for the Mark-Houwink coefficients of PP and PS are listed in Table A below.

[0110]

Table 1

[0111] A logarithmic molecular weight calibration was generated using a quartic polynomial approximation as a function of elution volume. The number average molecular weight and weight average molecular weight were calculated according to the following equations.

[0112]

Number

[0113] Melt Index The melt flow rate MFR of the propylene-based polymer is measured according to ASTM D-1238, Condition 230°C / 2.16 kg. The melt index I2 of the ethylene-based polymer is measured according to ASTM D-1238, Condition 190°C / 2.16 kg.

[0114] Density Polymer plaques were prepared for density analysis using ASTM D4703. The density of each polymer was measured using ASTM D792, Method B.

[0115] Viscosity of the unfilled composition The viscosity of each unfilled composition at 165 °C with spindle SC4-31 was measured using a Brookfield viscometer, model LVDV-1 Prime, together with a Thermosel. Subsequently, the ASTM D1986 standard test regarding the apparent viscosity of hot melt adhesives and coating materials was conducted. The sample was added to the sample chamber, which was then inserted into the Brookfield Thermosel and fixed in place. The sample chamber has a notch at the bottom that fits the bottom of the Brookfield Thermosel, ensuring that the chamber does not rotate when the spindle is inserted and rotating. The sample (about 8 - 10 grams) was heated to the required temperature until the molten sample was about 1 inch below the top of the sample chamber. The viscometer device was lowered and the spindle was immersed in the sample chamber. The lowering of the viscometer was continued until the brackets on the viscometer were aligned on the Thermosel. The viscometer was powered on and set to operate at a shear rate that would result in a torque reading within the range of 40 - 60 percent of the full torque capacity based on the RPM output of the viscometer. Readings were taken either every 30 minutes or until the value stabilized, at which point the final reading value was recorded.

[0116] Viscosity of the filled composition The viscosity of each filled composition was measured using spindle SC4-29 with a Brookfield viscometer, model DV2THBTJ0 Prime, together with a Thermosel at 165 °C. The sample (about 22 grams) was measured and added to a sample vial. The sample vial was placed in the Thermosel and melted. Next, the SC4-29 spindle was inserted into the sample. Using the RHEOCALC T software on the instrument or "manual mode", the spindle was rotated at 3 RPM for 10 minutes. Immediately thereafter, the speed was increased to 40 RPM and data was collected every minute for 30 minutes. The viscosity was reported as the average of the last 5 readings (last 5 minutes).

[0117] Viscosity of the polymer The viscosity of each polymer (8 - 10 grams) was measured according to ASTM D3236 using a Brookfield viscometer, model LVDV-1 Prime, together with a Thermosel. The viscosity was measured at 177 °C using spindle SC4-31.

[0118] Compression molding Each composition was compression molded into one or more plaques for physical testing using a Carver press. The plaque dimensions were "6 inches × 2.5 inches by 0.08 inches thick". The polymer was pre-melted at 190 °C for 1 minute at 5000 lb, then pressed at 30000 lb for 5 minutes, and then cooled between cold plates at 17 °C for 1 minute.

[0119] Microtensile testing - Mechanical properties Microtensile data for each compression molded plaque (see above) was collected on an INSTRON 5565 equipped with a 100 N load cell. Each plaque was die cut using a NAEF punch press with "ASTM die D1708" to form microtensile bars 0.08 inches thick. A strain rate of 0.100 inches / minute was applied to each tensile bar until failure (failure defined as load < 0.25 N). A minimum of 3 test specimens and a maximum of 5 test specimens were collected for each composition, and the average value of each property was reported.

[0120] Experiments Commercially available materials Commercially available materials are listed in Table 1 below.

[0121]

Table 2

[0122] Polymer synthesis and properties Each propylene-ethylene copolymer was produced using a solution polymerization process in a single liquid full reactor configuration. The pressure of the solvent (ISOPAR E) was delivered using industry standard positive displacement pump technology. The flow rate of ISOPAR E was metered to maintain the solvent at the polymer production ratio described in Table 2 below. The pressure of propylene was also delivered using standard positive displacement pump technology. Propylene was metered to maintain the solvent to propylene ratio described in Table 2. Propylene was combined with the solvent downstream of the solvent flow meter. The pressure of ethylene was delivered using industry standard gas compressor technology. The ethylene flow rate was metered to maintain the propylene to ethylene ratio described in Table 2. The hydrogen supply pressure was delivered from a gas cylinder. The hydrogen flow rate was metered to maintain the hydrogen to polymer production ratio described in Table 2. Hydrogen was combined with the ethylene gas downstream of the ethylene flow meter. The combined gas stream was mixed with the combined liquid stream. The solvent, propylene, and ethylene flow rates were measured using standard coriometers, and the hydrogen flow rate was measured using a standard thermal mass flow meter. The polymer viscosity was controlled by controlling the hydrogen to polymer production ratio. To decrease the polymer viscosity, the hydrogen to polymer ratio was increased, resulting in a greater hydrogen flow rate to the reactor. To increase the polymer viscosity, the hydrogen to polymer ratio was decreased, resulting in a reduced hydrogen flow rate to the reactor.

[0123] The combined feed stream was routed through a heat exchanger system to cool the feed stream to the target feed temperature described in Table 2. From the heat exchanger system, the flow was directed to the reactor where it was injected into the polymerization liquid. The feed pressure was not directly controlled. The control point was the reactor pressure. Thus, the feed pressure was the result of the pressure drop in the feed system for a given total flow rate.

[0124] The pressure required to inject each of the catalyst components into the reactor was delivered using industry-standard positive displacement pump technology. The flow rate was measured using a coriometer. Each component was pumped and metered separately. The catalyst complex was injected into the reactor separately from the cocatalyst. Cocatalyst 2 was combined with cocatalyst 1 and the combined stream was injected into the reactor. As a result of this configuration, the catalyst complex was activated within the reactor.

[0125] The flow of the catalyst complex was adjusted to control propylene conversion at the values listed in Table 2. The flow rates of cocatalyst 1 and cocatalyst 2 were controlled to maintain a constant molar ratio of each component to the catalyst. The ethylene conversion was controlled by the selected catalyst complex, controlling the relative reactivity of propylene to ethylene for the propylene conversion set point.

[0126] Two different catalyst complexes derived from bis-biphenylphenoxy were used to produce the copolymers. Catalyst A was used to produce HIP01 and HIP04, and catalyst B was used to produce HIP02 and HIP03. The procedures for synthesizing each of catalyst A and catalyst B can be found in International Publication Nos. WO 2012 / 027448 and WO 2007 / 136493, respectively. Both catalysts contained a hafnium metal center (M), the structures of which are shown in Table 3 below. Each catalyst was activated by contacting the metal ligand complex with bis(hydrogenated tallow alkyl)methyltetrakis(pentafluoro-phenyl)borate (1<->) amine (cocatalyst 1) and MMAO (cocatalyst 2). See Table 3.

[0127] The exotherm of the polymerization was removed by the adiabatic temperature rise of the solvent and reactants from the feed to the reactor temperature and non-adiabatic removal by heat exchange, maintaining the reactor temperature of Table 2. Water was injected into the reactor effluent to terminate the polymerization reaction. The polymer was isolated in the form of a veil. The polymer can be stabilized with one or more antioxidants at 1000 - 1500 ppm. The polymer properties are shown in Tables 4A and 4B.

[0128]

Table 3

[0129]

Number

[0130]

Table 4

[0131]

Table 5

[0132]

Table 6

[0133] Study - Filling Composition Composition - Blending with Filler The compositions are shown in Table 5. The blending of each filling composition was carried out with a HAAKE RHEOMIX3000, rotating at 8 RPM. The polymer (HIPO or commercially available polymer) and the functionalized copolymer (MORTON 100P) were added to the mixer at 140 °C and mixed until melted. The filler (CaCO3) was divided into three equal parts. The first part of the filler was added to the mixer and mixed for a short time. Then, the second part of the filler was added to the mixer and the ram was lowered. The RPM was increased to 60 RPM and mixing was continued for 1 minute, then the RPM was decreased to 15 RPM and mixing was continued for 1 minute. The final parts of the filler, wax, and IRGANOX1010 were added, the ram was lowered, and the resulting mixture was mixed at 60 RPM for 10 minutes. Next, the tackifier and oil were added, the ram was lowered, and the resulting mixture was mixed for 2 minutes, then the RPM was decreased to 15 RPM and mixing was continued for 1 minute. The mixture collected in the ram was returned to the bowl, the RPM was increased to 60 RPM, and mixing was continued for 2 minutes. The RPM was increased to 90 RPM and mixing was continued for 3 minutes. The final mixture was collected from the HAAKE RHEOMIX and pressed flat for future tests (compression molding and micro - tensile tests).

[0134] The compositions of Table 5 were compression molded (see the "Test Methods" section), and their mechanical properties were examined by micro tensile testing. The mechanical properties are shown in Table 6.

[0135] [Table 7]

[0136] As can be seen in Table 6, Compositions 1 to 4 of the present invention exhibit an optimal combination of a high Young's modulus and a high tensile strain at break. The compositions of the present invention exhibit improved flexibility, as seen in the higher tensile strain (%) values at break. Also, the Young's modulus is a good indicator for the thermal stability and expansion strength of the composition. Compositions 1 and 4 of the present invention have the best combination of a sufficiently high modulus value (less than 450 MPa and more than 60 MPa) and a high tensile strain value at break, and this combination not only improves the flexibility of the carpet backsheet but also can reduce the buckling of the carpet backsheet during the service life of the carpet.

[0137] The non-filled viscosities of all compositions except Composition A of the comparative example are well below the manufacturing requirement of a non-filled viscosity (at 165 °C) of 30,000 cP or less. Note that Composition A of the comparative example was formed from the high-viscosity copolymer VERSIFY4200. Also, each filled and thermoplastic composition of the present invention can be re-extruded multiple times with little loss of mechanical performance. This can be done with various conversion techniques, including the most commonly used implementations of single-screw or twin-screw extrusion. This also enables the recycling of these formulations for carpet applications or other uses, and the highly filled formulations will provide the required performance characteristics.

[0138] [Table 8] *The non-filled compositions were prepared by individually blending the materials of the compositions. The blending of each non-filled composition was carried out with a HAAKE RHEOMIX 3000 and rotated at 30 - 50 RPM. For each composition, the raw materials were dry-mixed and then added to the mixer. The mixer was preheated to 180°C. After fixing the ram in the lower position, the mixing was continued for 5 minutes. This application also relates to the following aspects. (1) A composition comprising the following components: a) At least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, each interpolymer having the following properties: i) A melting point Tm of 60°C to 85°C, and ii) A viscosity (at 177°C) of 3,000 cP to 30,000 cP, at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, b) At least one wax, and c) At least one oil, wherein the composition has a weight ratio of component b to component c of 0.30 to 4.0. (2) Component a has a density of 0.860 g / cc or more in the composition according to (1) above. (3) Component a has a density of 0.874 g / cc or less in the composition according to (1) or (2) above. (4) Component a is a propylene / ethylene interpolymer in the composition according to any one of (1) to (3) above. (5) Component a is a propylene / ethylene copolymer in the composition according to any one of (1) to (4) above. (6) The composition further comprises component d): at least one filler in the composition according to any one of (1) to (5) above. (7) The composition has a weight ratio of component d to component a of 5.00 or more in the composition according to (6) above. (8) The composition has a weight ratio of component d to component a of 15.0 or less in the composition according to (6) or (7) above. (9) The composition further comprises component f): at least one tackifier in the composition according to any one of (1) to (8) above. (10) The composition containing component d has a viscosity (at 165°C) of 10,000 cP or more in the composition according to any one of (6) to (9) above. (11) The composition containing component d has a viscosity (at 165°C) of 50,000 cP or less in the composition according to any one of (6) to (10) above. (12) The composition has a tensile strain at break of 6.0% or more in the composition according to any one of (1) to (11) above. (13) The composition has a tensile strain at break of 12% or more in the composition according to any one of (1) to (12) above. (14) The composition has a Young's modulus of 100 MPa or more in the composition according to any one of (1) to (13) above. (15) An article comprising at least one component formed from the composition according to any one of (1) to (14) above.

Claims

1. A composition comprising the following components: a) at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, each interpolymer having the following properties: i) a melting point Tm of 60°C to 85°C, and ii) a viscosity (at 177°C) of 3,000 cP to 30,000 cP, at least one propylene / ethylene interpolymer or at least one propylene / α-olefin interpolymer, b) at least one wax, and c) at least one oil, wherein the composition has a weight ratio of component b to component c of 0.30 to 4.0, the composition further comprises component d): at least one filler, the composition has a weight ratio of component d to component a of 5.00 or more, Composition.

2. The composition according to claim 1, wherein component a has a density of 0.860 g / cc or more.

3. The composition according to claim 1 or claim 2, wherein component a has a density of 0.874 g / cc or less.

4. The composition according to any one of claims 1 to 3, wherein component a is a propylene / ethylene interpolymer.

5. The composition according to any one of claims 1 to 4, wherein component a is a propylene / ethylene copolymer.

6. The composition has a weight ratio of component d to component a of 15.0 or less, The composition according to any one of claims 1 to 4.

7. The composition according to any one of claims 1 to 6, further comprising component f): at least one tackifier.

8. The composition comprising component d has a viscosity (at 165°C) of 50,000 cP or less, the composition according to claim 6 or claim 7.

9. The composition according to any one of claims 1 to 8, having a tensile strain at break of 6.0% or more.

10. An article comprising at least one component formed from the composition according to any one of claims 1 to 9.

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