Patents by Inventor Pirjo Jaaskelainen
Pirjo Jaaskelainen 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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Patent number: 7579422Abstract: The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an ?-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerization of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerization product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerization product, wherein the temperature in the gas phase reactor is at least 10° C. higher than in the slurry reactor and to a polymer obtainable by this process.Type: GrantFiled: August 9, 2007Date of Patent: August 25, 2009Assignee: Borealis Technology OyInventors: Pirjo Jaaskelainen, Norbert Hafner, Paivi Pitkanen, Markus Gahleitner, Olli Tuominen, Wilfried Toltsch
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Patent number: 7470756Abstract: The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an ?-olefin comprising at least four carbon atoms, in the presence of a catalyst in a muiltistage process comprising polymerisation of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerisation product, wherein the temperature in the gas phase reactor is at least 10° C. higher than in the slurry reactor and to a polymer obtainable by this process.Type: GrantFiled: June 26, 2002Date of Patent: December 30, 2008Assignee: Borealis Technology OyInventors: Pirjo Jääskeläinen, Norbert Hafner, Päivi Pitkänen, Markus Gahleitner, Olli Tuominen, Wilfried Töltsch
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Patent number: 7465775Abstract: This invention relates to a process for the production of a polymer film or fibre wherein a polymer composition comprising a propylene homo- or copolymer is formed into a film or fibre, and wherein said propylene homo or copolymer is produced in a process which comprises the polymerization of propylene monomers or propylene monomers and one or more types of comonomers in the presence of a high yield Ziegler-Natta olefin polymerization catalyst, which catalyst comprises a component in the form of particles having a predetermined size range which has been produced in a process comprising: a) preparing a solution of a complex of a Group 2 metal and an electron donor by reacting a compound of said material with said electron donor or a precursor thereof in an organic liquid reaction medium, b) reacting said complex in solution with a compound of a transition metal to procedure an emulsion the dispersed phase of which containing more than 50 mol % of the Group 2 metal in said complex, c) maintaining the particlesType: GrantFiled: June 4, 2004Date of Patent: December 16, 2008Assignee: Borealis Technology OyInventors: Torvald Vestberg, Pirjo Jääskeläinen
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Patent number: 7452953Abstract: The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an ?-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerization of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerization product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerizations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerization product, wherein the temperature in the gas phase reactor is at least 10° C. higher than in the slurry reactor and to a polymer obtainable by this process.Type: GrantFiled: August 9, 2007Date of Patent: November 18, 2008Assignee: Borealis Technology OyInventors: Pirjo Jääskeläinen, Norbert Hafner, Päivi Pitkänen, Markus Gahleitner, Olli Tuominen, Wilfried Töltsch
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Patent number: 7442743Abstract: The present invention relates to a process for the production of a propylene polymer in a multistage polymerization process comprising the polymerisation of propylene in the presence of a catalyst in a first reaction zone comprising at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone comprising at least one gas phase reactor and continuing polymerisation of propylene in the gas phase in the presence of said first polymerisation product which is characterised in that the temperature in both the slurry and the gas phase reactor is at least 75° C. and the product of at least one reactor is having an ethylene content in the range of 0.05 to 0.5 wt %. Furthermore, the invention relates to a propylene polymer obtainable by the inventive process, to a propylene polymer which is characterised in that it comprises ethylene comonomer in an amount of 0.05 to 0.5 wt. %, is having a xylene solubles contents of 3.0 wt.Type: GrantFiled: June 26, 2002Date of Patent: October 28, 2008Assignee: Borealis Technology OyInventors: Pirjo Jääskeläinen, Marijke Verpoest, Bert Broeders, Helge Grande
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Publication number: 20080207835Abstract: The invention relates to a heterophasic alpha-olefÊn random copolymer composition with a melting temperature (Tm) of at least 130° C. and a flexural modulus of not higher than 1000 MPa5 whereby the inventive composition comprises an al-pha-olefin random copolymer component (A) of at least two alpha-olefÊn (co)polymer fractions (i) and (ii) having a different comonomer content, whereby at least one of the fractions is an alpha-olefÊn random copolymer, and a rubber component (B).Type: ApplicationFiled: January 12, 2006Publication date: August 28, 2008Applicant: BOREALIS POLYMERS OYInventors: Torwald Vestberg, Bo Malm, Pirjo Jaaskelainen
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Patent number: 7365136Abstract: The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g/10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g/10 min.Type: GrantFiled: March 8, 2005Date of Patent: April 29, 2008Assignee: Borealis Technology OyInventors: Paivi Huovinen, Ali Harlin, Pirjo Jaaskelainen, Amir Karbasi, Nina Manner
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Publication number: 20080093104Abstract: Insulation layer for cables comprising a heterophasic polymer composition having superior mechanical and electrical properties and being environmentally friendly. The heterophasic polymer composition comprises a polymer matrix and dispersed therein a propylene copolymer having a weight average particle size of less than 1 ?m.Type: ApplicationFiled: June 20, 2005Publication date: April 24, 2008Applicant: BOREALIS TECHNOLOGY OYInventors: Markus Gahleitner, Karl-Michael Jager, Robert Nigel Hampton, Pirjo Jaaskelainen, Magnus Palmlof, Bo Malm, Merja Poikela, John Haugen
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Publication number: 20080027197Abstract: The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an ?-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerisation of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerisation product, wherein the temperature in the gas phase reactor is at least 10° C. higher than in the slurry reactor and to a polymer obtainable by this process.Type: ApplicationFiled: August 9, 2007Publication date: January 31, 2008Inventors: Pirjo Jaaskelainen, Norbert Hafner, Paivi Pitkanen, Markus Gahleitner, Olli Tuominen, Wilfried Toltsch
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Publication number: 20070287818Abstract: The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an ?-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerisation of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerisation product, wherein the temperature in the gas phase reactor is at least 10° C. higher than in the slurry reactor and to a polymer obtainable by this process.Type: ApplicationFiled: August 9, 2007Publication date: December 13, 2007Inventors: Pirjo Jaaskelainen, Norbert Hafner, Paivi Pitkanen, Markus Gahleitner, Olli Tuominen, Wilfried Toltsch
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Publication number: 20070203309Abstract: The present invention relates in a first embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the sealing initiation temperature SIT of the film is Tm?30° C. or less, preferably Tm?33° C. or less, in a second embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the film is having a relative reduction of the static friction value (inside-inside) from one to four days of 35% or more, preferably 40% or more, in a third embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the distribution of the comonomer in the random copolymer determined according to TREF method is multimodal, preferably bimodal, in a fourth embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol %, wherein the copolymer is having an elution interval of 50° C.Type: ApplicationFiled: April 24, 2007Publication date: August 30, 2007Inventors: Pirjo Jaaskelainen, Markus Gahleitner, Manfred Kirchberger, Paivi Pitkanen
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Publication number: 20070197743Abstract: The present invention relates in a first embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the sealing initiation temperature SIT of the film is Tm?30° C. or less, preferably Tm?33° C. or less, in a second embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the film is having a relative reduction of the static friction value (inside-inside) from one to four days of 35% or more, preferably 40% or more, in a third embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the distribution of the comonomer in the random copolymer determined according to TREF method is multimodal, preferably bimodal, in a fourth embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol %, wherein the copolymer is having an elution interval of 50° C.Type: ApplicationFiled: April 24, 2007Publication date: August 23, 2007Inventors: Pirjo Jaaskelainen, Markus Gahleitner, Manfred Kirchberger, Paivi Pitkanen
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Patent number: 7220812Abstract: The present invention relates to a process for the production of a propylene polymer in a multistage polymerisation process comprising the polymerisation of propylene in the presence of a catalyst in a first reaction zone comprising at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone comprising at least one gas phase reactor and continuing polymerisation of propylene in the gas phase in the presence of said first polymerisation product which is characterised in that the temperature in both the slurry and the gas phase reactor is at least 75° C. and the product of at least one reactor is having an ethylene content in the range of 0.05 to 0.5 wt. %. Furthermore, the invention relates to a propylene polymer obtainable by the inventive process, to a propylene polymer which is characterised in that it comprises ethylene comonomer in an amount of 0.05 to 0.5 wt. %, is having a xylene solubles contents of 3.0 wt.Type: GrantFiled: July 27, 2005Date of Patent: May 22, 2007Assignee: Borealis Technology OyInventors: Pirjo Jääskeläinen, Marijke Verpoest, Bert Broeders, Helge Grande
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Publication number: 20060235172Abstract: This invention relates to a process for the production of a polymer film or fibre wherein a polymer composition comprising a propylene homo- or copolymer is formed into a film or fibre, and wherein said propylene homo or copolymer is produced in a process which comprises the polymerization of propylene monomers or propylene monomers and one or more types of comonomers in the presence of a high yield Ziegler-Natta olefin polymerization catalyst, which catalyst comprises a component in the form of particles having a predetermined size range which has been produced in a process comprising: a) preparing a solution of a complex of a Group 2 metal and an electron donor by reacting a compound of said material with said electron donor or a precursor thereof in an organic liquid reaction medium, b) reacting said complex in solution with a compound of a transition metal to procedure an emulsion the dispersed phase of which containing more than 50 mol % of the Group 2 metal in said complex, c) maintaining the particlesType: ApplicationFiled: June 4, 2004Publication date: October 19, 2006Inventors: Torvald Vestberg, Pirjo Jääskeläinen
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Patent number: 7038000Abstract: There is provided a process for the copolymerisation of propylene with at least one C4-20 ?-olefin or C4-20 diene in a reaction medium in the presence of a catalyst system at a temperature of greater that 80° C. or at a temperature and pressure above the critical temperature and pressure of the reaction medium. Under such conditions, comonmer incorporation is higher than under standard conditions.Type: GrantFiled: May 3, 2002Date of Patent: May 2, 2006Assignee: Borealis Technology OYInventors: Torvald Vestberg, Pirjo Jaaskelainen, Paivi Pitkanen, Kauno Alastalo
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Publication number: 20050261415Abstract: The present invention relates to a process for the production of a propylene polymer in a multistage polymerisation process comprising the polymerisation of propylene in the presence of a catalyst in a first reaction zone comprising at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone comprising at least one gas phase reactor and continuing polymerisation of propylene in the gas phase in the presence of said first polymerisation product which is characterised in that the temperature in both the slurry and the gas phase reactor is at least 75° C. and the product of at least one reactor is having an ethylene content in the range of 0.05 to 0.5 wt. %. Furthermore, the invention relates to a propylene polymer obtainable by the inventive process, to a propylene polymer which is characterised in that it comprises ethylene comonomer in an amount of 0.05 to 0.5 wt. %, is having a xylene solubles contents of 3.0 wt.Type: ApplicationFiled: July 27, 2005Publication date: November 24, 2005Inventors: Pirjo Jaaskelainen, Marijke Verpoest, Bert Broeders, Helge Grande
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Publication number: 20050159564Abstract: The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g/10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g/10 min.Type: ApplicationFiled: March 8, 2005Publication date: July 21, 2005Applicant: Borealis Technology OYInventors: Paivi Huovinen, Ali Harlin, Pirjo Jaaskelainen, Amir Karbasi, Nina Manner
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Patent number: 6875826Abstract: The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g/l0 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g/10 min.Type: GrantFiled: September 28, 1998Date of Patent: April 5, 2005Assignee: Borealis A/SInventors: Päivi Huovinen, Ali Harlin, Pirjo Jääskeläinen, Amir Karbasi, Nina Manner
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Publication number: 20040210012Abstract: The present invention relates to a process for preparing a propylene random copolymer comprising polymerisation of propylene with a comonomer, said comonomer being ethylene or an &agr;-olefin comprising at least four carbon atoms, in the presence of a catalyst in a multistage process comprising polymerisation of propylene with a comonomer in a first reaction zone including at least one slurry reactor to give a first polymerisation product, transferring said first product to a second reaction zone including at least one gas phase reactor and polymerisations of propylene with a comonomer in said gas phase reactor in the presence of said first polymerisation product, wherein the temperature in the gas phase reactor is at least 10° C. higher than in the slurry reactor and to a polymer obtainable by this process.Type: ApplicationFiled: May 27, 2004Publication date: October 21, 2004Inventors: Pirjo Jaaskelainen, Norbert Hafner, Paivi Pitkanen, Markus Gahleitner, Olli Tuominen, Wilfried Toltsch
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Publication number: 20040175591Abstract: The present invention relates in a first embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the sealing initiation temperature SIT of the film is Tm−30° C. or less, preferably Tm−33° C. or less, in a second embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the film is having a relative reduction of the static friction value (inside-inside) from one to four days of 35% or more, preferably 40% or more, in a third embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.5 to 12 mol % wherein the distribution of the comonomer in the random copolymer determined according to TREF method is multimodal, preferably bimodal, in a fourth embodiment to a polymer film comprising a propylene random copolymer with a total comonomer content of 4.Type: ApplicationFiled: April 7, 2004Publication date: September 9, 2004Inventors: Pirjo Jaaskelainen, Markus Gahleitner, Manfred Kirchberger, Paivi Pitkanen