# US 11,999,839 B2 · Polyethylene composition for filaments or fibers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,999,839 B2 - Document ID: US11999839B2 - Status: Granted - Kind: B2 - Application number: 17/779,686 - Filed: 2020-12-02 - Published: 2023-01-05 - Granted: 2024-06-04 - Earliest claimed: 2019-12-03 - Assignees: Basell Polyolefine GmbH - Applicants: Basell Polyolefine GmbH - Inventors: Monica Galvan; Gianni Perdomi - Web page: https://patentgrep.com/patent/US11999839B2 ## CPC - C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond} - D01F 6/46: of polyolefins - D01F 6/04: from polyolefins - D01F 6/30: comprising olefins as the major constituent - C08L 2201/08: Stabilised against heat, light or radiation or oxydation - C08L 2203/12: used for fibers - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/035: containing four or more polymers in a blend - D10B 2321/021: polyethylene - D10B 2505/202: Artificial grass - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract A polyethylene composition for preparing filaments and fibers, made from or containing: A) from 65% to 97% by weight of a copolymer of ethylene having: 1) a density of 0.925 g/cm3 or higher; and 2) a MI2 value of 0.5 g/10 min. or greater; and B) from 3% to 35% by weight of a polyolefin composition made from or containing: BI) from 5% to 35% by weight of a propylene homopolymer; BII) from 20% to 50% by weight of an ethylene homopolymer or a copolymer of ethylene with up to 5% by weight of alpha-olefin comonomers, containing 5% by weight or less of a fraction soluble in xylene at 25° C.; and BIII) from 30% to 60% by weight of a terpolymer of ethylene, propylene, and 1-butene containing from 30% to 85% by weight of a fraction soluble in xylene at 25° C. ## Claims ### Claim 1 A polyethylene composition comprising: A) from 65% to 97% by weight of a copolymer of ethylene with one or more comonomers selected from C3-C10 alpha-olefins, wherein the ethylene copolymer has: 1) a density of 0.925 g/cm3 or higher, measured according to ISO 1183-1:2012 at 23° C.; and 2) a MI2 value of 0.5 g/10 min. or greater, where MI2 is the Melt Index measured according to ISO 1133-2:2011 at 190° C. with a load of 2.16 kg; and B) from 3% to 35% by weight of a polyolefin composition comprising: BI) from 5% to 35% by weight of a propylene homopolymer containing 10.0% by weight or less of a fraction soluble in xylene at 25° C. (XSI), referred to the weight of BI); BII) from 20% to 50% by weight of an ethylene homopolymer or a copolymer of ethylene with up to 5% by weight of one or more comonomers selected from C3-C10 alpha-olefins, both homopolymer and copolymer containing 5% by weight or less of a fraction soluble in xylene at 25° C. (XSII), both the amount of comonomers and the -amount of the fraction XSII being referred to the weight of BII); and BIII) from 30% to 60% by weight of a terpolymer of ethylene, propylene, and butene-1 containing from 45% to 65% by weight of ethylene units, and from 15% to 38% by weight of 1-butene units, and containing from 30% to 85% by weight of a fraction soluble in xylene at 25° C. (XSIII), the amounts of ethylene units and butene-1 units and of the fraction XSIII being referred to the weight of BIII); the amounts of A) and B) being referred to the total weight of A)+B) and the amounts of BI), BII) and BIII) being referred to the total weight of BI)+BII) BIII). ### Claim 2 (depends on 1) The polyolefin composition of claim 1, wherein component A) is a copolymer of ethylene with hexene-1. ### Claim 3 (depends on 1) The polyolefin composition of claim 1, wherein component A) has MI2 value of from 0.5 to 5 g/10 min. ### Claim 4 (depends on 1) The polyolefin composition of claim 1, wherein component A) has a MI21/MI2 value of from 25 to 60. ### Claim 5 (depends on 1) The polyolefin composition of claim 1, wherein component A) has a −Mw/Mn value from 4 to 18, where Mw and Mn are the weight average molecular weight and the number average molecular weight respectively, measured by GPC. ### Claim 6 (depends on 1) The polyolefin composition of claim 1, wherein component A) has a z-average molar mass Mz of less than 1000000 g/mol, measured by GPC. ### Claim 7 (depends on 1) The polyolefin composition of claim 1, wherein the intrinsic viscosity (I.V.) of the fraction soluble in xylene at 25° C. of the polyolefin composition B), measured in tetrahydronaphthalene at 135° C., is from 2.4 to 3.5 dl/g. ### Claim 8 (depends on 1) The polyolefin composition of claim 1, wherein component BI) has a MIL value of from 50 to 200 g/10 min. ### Claim 9 (depends on 1) The polyolefin composition of claim 1, wherein component BII) is an ethylene homopolymer. ### Claim 10 (depends on 1) The polyolefin composition of claim 1, wherein, in component BIII), the ratio XSIII/C2, wherein XSIII is the amount of fraction soluble in xylene and C2 is the amount by weight of ethylene units referred to the weight of BIII), is or lower. ### Claim 11 (depends on 1) An article of manufacture comprising the polyethylene composition of claim 1, wherein the article of manufacture is selected from the group consisting of filaments and fibers. ### Claim 12 (depends on 11) The article of manufacture of claim 11, wherein the filament or fiber is stretched by drawing with a draw ratio from 1.5 to 10. ### Claim 13 (depends on 11) The article of manufacture of claim 11, wherein the article of manufacture is a filament having a titer of at least 20 den. ### Claim 14 (depends on 11) The article of manufacture of claim 11, wherein the article of manufacture is a filament. ### Claim 15 (depends on 11) An artificial turf comprising the article of manufacture of claim 11, wherein the article of manufacture is a filament.