Patents by Inventor Anna Hjartfors
Anna Hjartfors has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230265259Abstract: The present invention concerns the use of carbon black for reducing the shrinkage of a polyolefin composition to below 0.9%, wherein the polyolefin composition comprises a polyolefin polymer, and carbon black in an amount of from 0.05 to 2 wt. % based on the total weight of the polyolefin composition.Type: ApplicationFiled: July 26, 2021Publication date: August 24, 2023Inventors: Anna Hjartfors, Yi Liu, Denis Yalalov, Martin Anker
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Publication number: 20230212377Abstract: A multimodal polyethylene composition having a lower molecular weight (LMW) ethylene homo or copolymer component (A) and a higher molecular weight ethylene copolymer component (B); wherein the lower molecular weight component comprises: (ai) a first fraction which comprises an ethylene homo or copolymer of ethylene and one or more C3-10 alpha olefins; and (aii) a N second fraction which comprises a different ethylene homo or copolymer of ethylene and one or more C3-10 alpha olefins; wherein the multimodal polymer composition has a density of 930 kg/m3 or more (ISO1183), such as 938 to 955 kg/m3, an MFR2 (ISO1133 at 190° C. and 2.16 kg load) in the range of 0.05 to 10 g/10 min, and a flexural modulus of up to 800 MPa, such as 300 to 800 MPa (ISO 178:2010).Type: ApplicationFiled: May 19, 2021Publication date: July 6, 2023Inventors: Anna HJÄRTFORS, Per-Ola HAGSTRAND, Villgot ENGLUND, Jarmo KELA
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Publication number: 20230203286Abstract: A multimodal polyethylene composition having a lower molecular weight (LMW) ethylene homo or copolymer component (A) and a higher molecular weight ethylene copolymer component (B); wherein the LMW component comprises two fractions (ai) and (aii); wherein the polymer composition has a density of 930 kg/m3 or more (ISO1183), such as 938 to 955 kg/m3, an MFR2 (ISO1133 at 190° C. and 2.16 kg load) in the range of 0.05 to 10 g/10 min, a flex modulus of up to 800 MPa (ISO 178:2010), such as 300 to 800 MPa (ISO 178:2010) and a taber abrasion resistance of 8.0 to 13.0 mg/1000 cycle (ASTM D 4060: 2014).Type: ApplicationFiled: May 19, 2021Publication date: June 29, 2023Inventors: Anna HJÄRTFORS, John JAMIESON, Ravindra TUPE, Pauli LESKINEN
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Patent number: 11685825Abstract: The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, said copolymer having density of 0.935-0.960 g/cm3 and MFR2 of 2.2-10.0 g/10 min and said composition having ESCR of at least 2000 hours and a cable shrinkage of 0.70% or lower. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.Type: GrantFiled: April 6, 2018Date of Patent: June 27, 2023Assignee: Borealis AGInventors: Anna Hjärtfors, Yi Liu, Joseph Thorman, Victor Sumerin
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Patent number: 11618795Abstract: The present invention relates to a multimodal ethylene copolymer composition having a density of 920 to 949 kg/m3 and a flexural modulus, wherein said flexural modulus is following the equation: Flexural modulus [MPa]<21.35·density [kg/m3]?19585 [1]. The multimodal ethylene copolymer composition according to the invention can be used in a highly flexible cable jacket, preferably a power cable jacket.Type: GrantFiled: April 21, 2021Date of Patent: April 4, 2023Assignee: BOREALIS AGInventors: Anna Hjärtfors, Yi Liu, Ravindra Tupe, Victor Sumerin
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Patent number: 11591455Abstract: The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, wherein said olefin copolymer has a density of 0.935-0.960 g/cm3 and MFR2 of 1.5-10.0 g/10 min and comprises a bimodal polymer mixture of a low molecular weight homo- or copolymer and a high molecular weight copolymer wherein the composition has ESCR of at least 2000 hours and wherein the numerical values of cable wear index and composition MFR2 (g/10 min) follow the correlation: Wear index<15.500+0.900*composition MFR2. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.Type: GrantFiled: April 6, 2018Date of Patent: February 28, 2023Assignee: BOREALIS AGInventors: Anna Hjärtfors, Yi Liu, Victor Sumerin, Joseph Thorman
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Publication number: 20220135758Abstract: The invention relates to a foamable polymer composition comprising a polyolefin polymer which polyolefin polymer does not bear silane moieties and comprises 20 to 99.99 wt. % linear low density polyethylene, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of citric acid and/or derivatives of citric acid or mixtures thereof. Further the invention relates to a foamable polymer composition comprising a polyolefin polymer, and a blowing agent in an amount of 0.01 to 3 wt. % based on the total foamable polymer composition, wherein the blowing agent consists of expandable polymeric microspheres, and the composition does not comprise fluororesin. Further the invention relates to a foamed polymer composition obtained by foaming this foamable polymer composition.Type: ApplicationFiled: March 5, 2020Publication date: May 5, 2022Inventors: Anna Hjartfors, Asa Wannerskog, Martin Anker, Lars Efraimsson, Anette Nilsson
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Publication number: 20220064418Abstract: The invention relates to a foamable polymer composition comprising a blowing agent and a foamed polymer composition obtained by foaming this foamable polymer composition. The invention further relates to a cable comprising at least one layer which comprises the foamable polymer composition or a foamed polymer composition.Type: ApplicationFiled: December 3, 2019Publication date: March 3, 2022Inventors: Asa Wannerskog, Anna Hjartfors, Oscar Prieto, Martin Anker, Ann Watson
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Publication number: 20220064419Abstract: The present invention concerns a foamable polymer composition and a foamed polymer composition obtained by foaming this foamable polymer composition. The invention is also concerned with a cable comprising at least one layer which comprises the foamable polymer composition or the foamed polymer composition. The invention further provides a process for producing a foamed polymer composition.Type: ApplicationFiled: December 3, 2019Publication date: March 3, 2022Inventors: Asa Wannerskog, Anna Hjartfors, Oscar Prieto, Martin Anker, Ann Watson
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Publication number: 20210253758Abstract: The present invention relates to a multimodal ethylene copolymer composition having a density of 920 to 949 kg/m3 and a flexural modulus, wherein said flexural modulus is following the equation: Flexural modulus [MPa]<21.35·density [kg/m3]?19585 [1]. The multimodal ethylene copolymer composition according to the invention can be used in a highly flexible cable jacket, preferably a power cable jacket.Type: ApplicationFiled: April 21, 2021Publication date: August 19, 2021Inventors: Anna Hjärtfors, Yi Liu, Ravindra Tupe, Victor Sumerin
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Patent number: 11015003Abstract: The present invention relates to a multimodal ethylene copolymer composition having a density of 920 to 949 kg/m3 and a flexural modulus, wherein said flexural modulus is following the equation: Flexural modulus [MPa]<21.35·density [kg/m3]?19585 [1]. The multimodal ethylene copolymer composition according to the invention can be used in a highly flexible cable jacket, preferably a power cable jacket.Type: GrantFiled: May 29, 2017Date of Patent: May 25, 2021Assignee: Borealis AGInventors: Anna Hjärtfors, Yi Liu, Ravindra Tupe, Victor Sumerin
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Publication number: 20210095108Abstract: The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, said copolymer having density of 0.935-0.960 g/cm3 and MFR2 of 2.2-10.0 g/10 min and said composition having ESCR of at least 2000 hours and a cable shrinkage of 0.70% or lower. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.Type: ApplicationFiled: April 6, 2018Publication date: April 1, 2021Inventors: Anna Hjärtfors, Yi Liu, Joseph Thorman, Victor Sumerin
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Publication number: 20200071508Abstract: The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, wherein said olefin copolymer has a density of 0.935-0.960 g/cm3 and MFR2 of 1.5-10.0 g/10 min and comprises a bimodal polymer mixture of a low molecular weight homo- or copolymer and a high molecular weight copolymer wherein the composition has ESCR of at least 2000 hours and wherein the numerical values of cable wear index and composition MFR2 (g/10 min) follow the correlation: Wear index<15.500+0.900*composition MFR2. The invention further relates to the process for preparing said composition and its use as outer jacket layer for a cable, preferably a communication cable, most preferably a fiber optic cable.Type: ApplicationFiled: April 6, 2018Publication date: March 5, 2020Inventors: Anna Hjärtfors, Yi Liu, Victor Sumerin, Joseph Thorman
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Publication number: 20190292357Abstract: The present invention relates to a compounded polyethylene composition having a density of 930 to 965 kg/m3 and comprising at least 0.01 percent by weight (wt-%) of sodium bicarbonate after compounding of the compounded polyethylene composition, wherein the ratio between sodium bicarbonate, in the polyethylene composition, before and after compounding is X, wherein X1?X<X2, and X1 is 1.00 and X2 is 2.00, an article, for example, a coating, a wire or a cable, comprising the compounded polyethylene composition, a process for producing the article, and use of the compounded polyethylene composition.Type: ApplicationFiled: December 6, 2016Publication date: September 26, 2019Inventors: Martin Anker, Ann Watson, Anna Hjärtfors, Asa Wannerskog
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Publication number: 20190256695Abstract: A polymer composition comprising a base resin is disclosed herein. The base resin includes a first high molecular weight component, a low molecular weight component and a second high molecular weight component. The weight average molecular weight of the second high molecular weight component differs from the first high molecular weight component. The ratio of the weight and number average molecular weight of the first high molecular weight component is greater than 5. The first high molecular weight component has a density of equal or less than 930 kg/m3, and an intrinsic viscosity of equal or less than 15 dl/g, The base resin has a melt flow rate MFR5 of equal or less than 0.40 g/10 min and the composition has a viscosity at a shear stress of 747 Pa (eta747) of more than 700 kPas. Also a process for the production of a polymer composition is disclosed herein.Type: ApplicationFiled: June 20, 2017Publication date: August 22, 2019Inventors: Yi Liu, Qizheng Dou, Victor Sumerin, Jani Aho, Jarmo Kela, Thomas Hjertberg, Anna Hjärtfors
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Publication number: 20190144582Abstract: The present invention relates to a multimodal ethylene copolymer composition having a density of 920 to 949 kg/m3 and a flexural modulus, wherein said flexural modulus is following the equation: Flexural modulus [MPa]<21.35·density [kg/m3]?19585 [1]. The multimodal ethylene copolymer composition according to the invention can be used in a highly flexible cable jacket, preferably a power cable jacket.Type: ApplicationFiled: May 29, 2017Publication date: May 16, 2019Inventors: Anna Hjärtfors, Yi Liu, Ravindra Tupe, Victor Sumerin