Patents by Inventor Karl D. Weilandt
Karl D. Weilandt 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: 11312802Abstract: A composition includes a thermoplastic fluoropolymer having vinylidene fluoride units in an amount of at least 30 mole percent and tetrafluoroethylene units in an amount of at least 5 mole percent. The thermoplastic fluoropolymer is free of hexafluoropropylene units or comprises less than 5 mole percent hexafluoropropylene units. The composition further includes at least one of a non-fluorinated, thermoplastic polymer as a major component of the composition or a polymer processing additive synergist. A method of reducing melt defects during the extrusion of a polymer is also provided. Use of the thermoplastic fluoropolymer as a polymer processing additive is also provided.Type: GrantFiled: May 17, 2017Date of Patent: April 26, 2022Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Claude Lavallée, Dale E. Hutchens, Harald Kaspar, Karl D. Weilandt, Shireen A. Mamun
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Patent number: 11267922Abstract: There is provided a curable composition comprising a fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least a fluorinated monomer; and (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units that comprises at least a fluorinated monomer and a nitrile-containing cure-site monomer.Type: GrantFiled: January 12, 2018Date of Patent: March 8, 2022Assignee: 3M Innovative Properties CompanyInventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Patent number: 11261280Abstract: Described herein is a millable fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least TFE, HFP and VDF; (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units derived from at least HFP and VDF; and (c) a bisolefin monomer, wherein at least (i) the semi-crystalline segment of the A block comprises repeating divalent monomeric units derived from TFE, HFP, VDF, and the bisolefin monomer, (ii) the segment of the B block comprises repeating divalent monomeric units derived from HFP, VDF, and the bisolefin monomer, or (iii) a combination thereof; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: GrantFiled: January 12, 2018Date of Patent: March 1, 2022Assignee: 3M Innovative Properties CompanyInventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20220049079Abstract: Described herein is a method of making a curable perfluoroelastomer, wherein the curable perfluoroelastomer comprises particles of a semi crystalline fluoropolymer, wherein the semi crystalline fluoropolymer is a TFE copolymer comprising no more than 1 wt % of at least one additional fluorinated monomer. The method comprises: (a) obtaining an amorphous perfluoropolymer and the particles of the semi crystalline fluoropolymer; and (c) dry blending the amorphous perfluoropolymer and the particles to form a curable perfluoroelastomer.Type: ApplicationFiled: December 19, 2019Publication date: February 17, 2022Inventors: Tatsuo Fukushi, Klaus Hintzer, Florian D. Jochum, Michael H. Mitchell, Tho Q. Nguyen, Peter J. Scott, Allen M. Sohlo, Yuta Suzuki, Karl D. Weilandt, Steffen Vowinkel
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Publication number: 20220033635Abstract: Described herein is a latex blend comprising (i) an amorphous perfluoropolymer and (ii) an aqueous dispersion of semi crystalline fluoropolymer particles, wherein the particles comprise a TFE homopolymer or a TFE copolymer comprising no more than 1 wt % of a second fluorinated monomer, wherein the semi crystalline fluoropolymer particles (a) have an MFI (372° C. with 2.16 kg) of less than 50 g/10 min or (b) are not melt processible and have an SSG of less than 2.190, wherein the semi crystalline fluoropolymer particles have an average diameter greater than 100 nm.Type: ApplicationFiled: December 19, 2019Publication date: February 3, 2022Inventors: Klaus Hintzer, Tamon Aoki, Tatsuo Fukushi, Florian D. Jochum, Peter J. Scott, Yuta Suzuki, Karl D. Weilandt, Steffen Vowinkel
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Publication number: 20210284780Abstract: Described herein is a millable fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least TFE, HFP and VDF; (b) at least one B block, wherein the B block is a segment comprising repeating dilvalent monomeric units derived from at least HFP and VDF; and (c) a bisolefin monomer, wherein at least (i) the semi-crystalline segment of the A block comprises repeating divalent monomeric units derived from TFE, HFP, VDF, and the bisolefin monomer, (ii) the segment of the B block comprises repeating divalent monomeric units derived from HFP, VDF, and the bisolefin monomer, or (iii) a combination thereof; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: ApplicationFiled: January 12, 2018Publication date: September 16, 2021Inventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20210230328Abstract: Method of reducing the amount of a fluorinated acid or its salts from a fluoropolymer, the method comprises: (i) providing a composition containing particles of the fluoropolymer, (ii) contacting the fluoropolymer particles with a treatment composition comprising at least one organic liquid; and, optionally, further comprising (iii) isolating, washing and subjecting the fluoropolymer to drying treatment, and wherein the fluoropolymer contains units derived from tetrafluoroethene (TFE) and is selected from the group of fluoroelastomers and the group of fluoropolymers having a melting point of less than 150° C. Also provided are fluoropolymer and compositions containing such polymers that are essentially free of fluorinated acids and their salts.Type: ApplicationFiled: May 8, 2019Publication date: July 29, 2021Inventors: Klaus Hintzer, Florian D. Jochum, Herbert Koenigsmann, Jens Schrooten, Tilman C. Zipplies, Karl D. Weilandt
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Patent number: 11028198Abstract: A copolymer having tetrafluoroethylene units and second polymerized monomer units in a range from 0.2 to 1 percent by weight, based on the total weight of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more —O— groups, n is independently from 1 to 6, and z is 0, 1, or 2. The copolymer has a melt flow index in a range from 0.02 grams per 10 minutes to 19.4 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.Type: GrantFiled: August 1, 2017Date of Patent: June 8, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Harald Kaspar, Klaus Hintzer, Markus E. Hirschberg, Herbert Koenigsmann, Karl D. Weilandt, Tilman C. Zipplies
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Publication number: 20210155790Abstract: A tetrafluoroethene copolymer having a melting point of from about 240° C. to 325° C., a melt flow index (MFI at 372° C. and 5 kg load) of 0.5-80 grams/10 minutes and having at least 70% by weight of units derived from tetrafluoroethene and further comprising units derived from at least one perfluorinated alkyl allyl ether (PAAE) comonomer corresponding to the general formula: CF2?CF—CF2—O—Rf (I) where Rf is a perfluorinated alkyl residue having from 1 to 10 carbon atoms and wherein the alkyl chain of the residue may be interrupted once or more than once by an oxygen atom and further, optionally, comprising units derived from perfluoromethyl vinyl ether (PMVE), perfluoroethyl vinyl ether (PEVE) and a combination thereof and wherein the content of units CA derived PAAEs and, optionally, PMVE, PEVE or a combination thereof, is at least 1.0% by weight.Type: ApplicationFiled: February 15, 2019Publication date: May 27, 2021Inventors: Klaus Hintzer, Harald Kaspar, Jens Schrooten, Tilman C. Zipplies, Florian Jochum, Michael C. Dadalas, Tatsuo Fukushi, Naiyong Jing, Karl D. Weilandt
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Patent number: 10988827Abstract: A coalescing element for aggregating droplets of an emulsion. The coalescing element includes a nonwoven web substrate. A coalescer that includes the coalescing element can also include a housing and a fluid inlet and a fluid outlet each in fluid communication with the coalescing element. The coalescing element and coalescer may be useful for emulsions that form in solvent extraction/electrowinning copper processing and for other emulsions.Type: GrantFiled: March 16, 2016Date of Patent: April 27, 2021Assignee: 3M Innovative Properties CompanyInventors: Clinton P. Waller, Jr., Chetan P. Jariwala, Jerald K. Rasmussen, John J. Schmidt, Michael J. Sierakowski, Karl D. Weilandt
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Patent number: 10766990Abstract: A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more —O— groups, n is from 1 to 6, and m is 0 or 1. The copolymer has a melt flow index in a range from 25 grams per 10 minutes to 35 grams per 10 minutes and has up to 50 unstable end groups per 106 carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.Type: GrantFiled: February 12, 2016Date of Patent: September 8, 2020Assignee: 3M Innovative Properties CompanyInventors: Denis Duchesne, Klaus Hintzer, Harald Kaspar, Kai H. Lochhaas, Per M. Nelson, Jens C. Schrooten, Karl D. Weilandt, Tilman C. Zipplies
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Patent number: 10744497Abstract: Provided are methods for removing a perfluorinated alkanoic acid from solutions containing the perfluorinated alkanoic acid and a fluorinated alkoxy acid. These methods include contacting the first solution with an anion-exchange resin to produce a second solution and a resultant anion-exchange resin having perfluorinated alkanoic acid adsorbed thereto, wherein the perfluorinated alkanoic acid is present in the first solution at a first concentration and is present in the second solution at a second concentration which is lower than the first concentration, and separating the second solution from the resultant anion-exchange resin.Type: GrantFiled: March 2, 2017Date of Patent: August 18, 2020Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Tilman C. Zipplies, Klaus Hintzer, Helmut Traunspurger, Karl D. Weilandt
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Patent number: 10730980Abstract: A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more —O— groups, z is 1 or 2, each n is independently from 1 to 6, and m is 0 or 1. The copolymer has a melt flow index in a range from 25 grams per 10 minutes to 35 grams per 10 minutes and has a combined number of unstable end groups and —CF2H end groups in a range from 25 per 106 carbon atoms up to 120 per 106 carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.Type: GrantFiled: February 12, 2016Date of Patent: August 4, 2020Assignee: 3M Innovative Properties CompanyInventors: Denis Duchesne, Klaus Hintzer, Harald Kaspar, Kai H. Lochhaas, Per M. Nelson, Jens C. Schrooten, Karl D. Weilandt, Tilman C. Zipplies
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Patent number: 10590224Abstract: Described herein is a millable fluorinated block copolymer having at least one A block and at least one B block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from TFE, HFP and VDF; and the B block is a segment comprising repeating dilvalent monomeric units derived from HFP and VDF; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: GrantFiled: July 11, 2016Date of Patent: March 17, 2020Assignee: 3M Innovative Properties CompanyInventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Werner M. A. Grootaert, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20190352444Abstract: There is provided a curable composition comprising a fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least a fluorinated monomer; and (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units that comprises at least a fluorinated monomer and a nitrile-containing cure-site monomer.Type: ApplicationFiled: January 12, 2018Publication date: November 21, 2019Inventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20190276656Abstract: A composition includes a thermoplastic fluoropolymer having vinylidene fluoride units in an amount of at least 30 mole percent and tetrafluoroethylene units in an amount of at least 5 mole percent. The thermoplastic fluoropolymer is free of hexafluoropropylene units or comprises less than 5 mole percent hexafluoropropylene units. The composition further includes at least one of a non-fluorinated, thermoplastic polymer as a major component of the composition or a polymer processing additive synergist. A method of reducing melt defects during the extrusion of a polymer is also provided. Use of the thermoplastic fluoropolymer as a polymer processing additive is also provided.Type: ApplicationFiled: May 17, 2016Publication date: September 12, 2019Inventors: Claude Lavallée, Dale E. Hutchens, Harald Kaspar, Karl D. Weilandt, Shireen A. Mamun
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Publication number: 20190202951Abstract: A copolymer having tetrafluoroethylene units and second polymerized monomer units in a range from 0.2 to 1 percent by weight, based on the total weight of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more —O— groups, n is independently from 1 to 6, and z is 0, 1, or 2. The copolymer has a melt flow index in a range from 0.02 grams per 10 minutes to 19.4 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.Type: ApplicationFiled: August 1, 2017Publication date: July 4, 2019Inventors: Harald Kaspar, Klaus Hintzer, Markus E. Hirschberg, Herbert Koenigsmann, Karl D. Weilandt, Tilman C. Zipplies
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Patent number: 10227484Abstract: Described herein is a composition comprising (i) a hydrofluorothermoplastic polymer, wherein the hydrofluorothermoplastic polymer is derived from: (a) 50-85 mol % tetrafluoroethene; (b) 2-15 mol % hexafluoropropene; (c) 10-35 mol % vinylidene fluoride; and (d) 0.1 to 5 mol % of a bromine-containing monomer; and (ii) a perhalogenated thermoplastic polymer. Such compositions can be used in multilayer constructions in, for example, fuel hose applications.Type: GrantFiled: August 13, 2015Date of Patent: March 12, 2019Assignee: 3M Innovative Properties CompanyInventors: Lisa P. Chen, Klaus Hintzer, Harald Kaspar, Kai H. Lochhaas, Mark W. Muggli, Jens Schrooten, Allen M. Sohlo, Helmut Traunspurger, Karl D. Weilandt, Tilman C. Zipplies
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Publication number: 20190070599Abstract: Provided are methods for removing a perfluorinated alkanoic acid from solutions containing the perfluorinated alkanoic acid and a fluorinated alkoxy acid. These methods include contacting the first solution with an anion-exchange resin to produce a second solution and a resultant anion-exchange resin having perfluorinated alkanoic acid adsorbed thereto, wherein the perfluorinated alkanoic acid is present in the first solution at a first concentration and is present in the second solution at a second concentration which is lower than the first concentration, and separating the second solution from the resultant anion-exchange resin.Type: ApplicationFiled: March 2, 2017Publication date: March 7, 2019Inventors: Tilman C. Zipplies, Klaus Hintzer, Helmut Traunspurger, Karl D. Weilandt
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Publication number: 20180312939Abstract: Provided are methods and related compositions for separating immiscible organic and aqueous compositions. The methods include dispersing a discrete, insoluble filler in the organic composition, dispersing the organic composition into the aqueous composition, separating under gravity the organic and aqueous compositions into respective upper and lower layers. Advantageously, the insoluble filler remains in the organic composition and facilitates segregation and coalescence of droplets of the organic composition in the aqueous composition.Type: ApplicationFiled: October 18, 2016Publication date: November 1, 2018Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Michael J. Sierakowski, Andrew W. Rabins, Karl D. Weilandt, Clinton P. Waller, Jr., Mikhail A. Belkin, Susannah C. Clear, Tien Yi T.H. Whiting