Patents Assigned to Luzenac America, Inc.
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Publication number: 20110303378Abstract: The present invention relates to a process for controlling deposits in a paper making process, more particularly to a process comprising the use of talc for controlling deposits in a paper making process with talc. One aspect of the invention is contacting talc with a white water stream at one or more locations within the paper making process after separating pulp from a pulp-containing stream and before introducing the re-circulating the white water stream to one or more of a pulper, a thick-stock, a thin-stock, a dilution process, a shower, a storage vessel, a blending process, and a digestor.Type: ApplicationFiled: June 8, 2011Publication date: December 15, 2011Applicant: LUZENAC AMERICA, INC.Inventor: Daniel Mark Woiceshyn
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Patent number: 7915183Abstract: A barrier coating for paper and a method of making the coated paper using a wax coating composition containing an inorganic mineral filler is provided. The inorganic mineral filler imparts a viscosity to the wax coating composition similar to the viscosity of the wax coating composition in the absence of the inorganic mineral filler. Coated paper products are also provided.Type: GrantFiled: July 16, 2008Date of Patent: March 29, 2011Assignee: Luzenac America, Inc.Inventor: Fuushern Wuu
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Publication number: 20090022999Abstract: An adhesive release coating for paper, plastic films, metal films, and other materials as well as a method of making the coated material with a silicone composition containing an inorganic mineral filler is provided. Use of the inorganic mineral filler results in a release coating that has an equivalent or lesser viscosity than a pure silicone release composition.Type: ApplicationFiled: July 18, 2008Publication date: January 22, 2009Applicant: Luzenac America, Inc.Inventor: Fuushern Wuu
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Publication number: 20090022978Abstract: A barrier coating for paper and a method of making the coated paper using a wax coating composition containing an inorganic mineral filler is provided. The inorganic mineral filler imparts a viscosity to the wax coating composition similar to the viscosity of the wax coating composition in the absence of the inorganic mineral filler. Coated paper products are also provided.Type: ApplicationFiled: July 16, 2008Publication date: January 22, 2009Applicant: Luzenac America, Inc.Inventor: Fuushern Wuu
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Patent number: 7470319Abstract: This invention relates generally to crop protection compositions and methods for making and using the compositions. More specifically, the invention relates to crop protection compositions utilizing talc and one or more additives providing for improved aqueous suspension of the talc and methods for making such compositions. The present invention also discloses horticultural substrates coated with a crop protective composition utilizing talc and one or more additives providing for improved aqueous suspension of the talc.Type: GrantFiled: August 27, 2004Date of Patent: December 30, 2008Assignee: Luzenac America, Inc.Inventors: Gregory S. Hunter, Carl W. Nichols
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Patent number: 7258732Abstract: The present invention provides a high solids mineral slurry having long term stability and a method for producing the same. Specifically, the present invention provides a talc slurry having a solids content of up to 65% and a stability against sedimentation for up to 100 days. The talc slurry of the present invention comprises a phyllosilicate mineral, a chelating agent and multivalent ions, wherein the slurry has a pH of between about 10.2 and about 11.8.Type: GrantFiled: August 30, 2004Date of Patent: August 21, 2007Assignee: Luzenac America, Inc.Inventor: Carl W. Nichols
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Publication number: 20060270762Abstract: The present invention is a plastic composite reinforced by cellulosic material and talc. The composite preferably includes about 20% to 40% by weight of talc, about 10% to 60% by weight of a cellulosic material, and about 20% to 70% by weight of thermoplastic polymer, wherein the total amount of talc and cellulosic material comprise about 30% to 80% by weight of the composite. The present invention also includes articles made with composites of the present invention and methods for extruding such a composite.Type: ApplicationFiled: March 17, 2006Publication date: November 30, 2006Applicant: Luzenac America, Inc.Inventor: Oscar Noel
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Publication number: 20060249050Abstract: The present invention describes an additive which controls stickies formation and removes anionic trash from recycled old corrugated container furnish, old newsprint furnish, deinked pulp furnish, old magazine grade furnish, coated broke furnish, or thermomechanical pulp furnish. The present invention treats talc with either a tertiary or quaternary amine. The treated talc is then added to the pulp slurry and removes stickies by binding the stickies to the talc and neutralizes the anionic trash that may be present. The present invention also describes a method for modifying talc particles involving contacting a tertiary or quaternary amine with talc particles. The present invention further describes a talc created by the process of contacting a tertiary or quaternary amine with talc particles. The present invention additionally describes a paper product having a modified talc filler wherein the modified talc filler has been contacted with a tertiary or quaternary amine.Type: ApplicationFiled: December 16, 2005Publication date: November 9, 2006Applicant: Luzenac America, Inc.Inventors: Shripal Sharma, Jorge Yordan, Vicente Lasmarias, Jordan Kortmeyer, Alexis Layne, Jason Reynolds
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Publication number: 20030205344Abstract: This invention discloses a talc additive for use as a filler in making paper products which is useful in preventing dusting or linting of paper. Also disclosed is a method of making the additive and using it in making paper.Type: ApplicationFiled: March 31, 2003Publication date: November 6, 2003Applicant: Luzenac America, Inc.Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne
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Publication number: 20030143144Abstract: The present invention describes an additive which controls stickies formation and removes anionic trash from recycled old corrugated container furnish, old newsprint furnish, deinked pulp furnish, old magazine grade furnish, coated broke furnish, or thermomechanical pulp furnish. The present invention treats talc with either a tertiary or quaternary amine. The treated talc is then added to the pulp slurry and removes stickies by binding the stickies to the talc and neutralizes the anionic trash that may be present.Type: ApplicationFiled: September 5, 2002Publication date: July 31, 2003Applicant: Luzenac America, Inc.Inventors: Shripal Sharma, Jorge Yordan, Vicente Lasmarias, Jordan Kortmeyer, Alexis Layne, Jason Reynolds
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Patent number: 6569934Abstract: The present invention provides a mineral filled thermoplastic olefin (MFTPO) composition comprising a polymer mixture, a mineral and a flexural modulus modifying agent and/or a heat deflection temperature modifying agent, and a method for producing the same. The flexural modulus modifying agent and/or a heat deflection temperature modifying agent significantly increases the flexural modulus and/or a heat deflection temperature of the MFTPO without substantially affecting the falling weight impact resistance of the MFTPO relative to a similar MFTPO composition which lacks the flexural modulus modifying agent and/or a heat deflection temperature modifying agent.Type: GrantFiled: June 14, 2001Date of Patent: May 27, 2003Assignee: Luzenac America, Inc.Inventor: Oscar French Noel, III
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Publication number: 20030096143Abstract: The present invention discloses a method of treating talc particles that will improve talc's wettability and/or talc's affinity to cellulosic fibers. The method also includes changing the charge of the talc particles from slightly anionic to cationic. The present invention, while modifying certain of talc's characteristics, also preserves talc's suitability as a pitch or stickie control in the paper making process. The process of the present invention includes the steps of coating the surface of talc particles with a metal hydroxide and then coating the surface of the talc particles with a cationic polymer.Type: ApplicationFiled: September 5, 2002Publication date: May 22, 2003Applicant: Luzenac America, Inc.Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne, Edward McCarthy
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Patent number: 6565646Abstract: This invention discloses a talc additive for use as a filler in making paper products which is useful in preventing dusting or linting of paper. Also disclosed is a method of making the additive and using it in making paper.Type: GrantFiled: November 2, 2001Date of Patent: May 20, 2003Assignee: Luzenac America, Inc.Inventors: Vicente Lasmarias, Shripal Sharma, Alexis Layne
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Patent number: 6558445Abstract: The present invention describes a composition which has as its base a dry, granular fertilizer and to which is added a flowing agent and further to which is added a hydrophobic agent. The present invention also describes methods for making this composition.Type: GrantFiled: March 26, 2002Date of Patent: May 6, 2003Assignee: Luzenac America, Inc.Inventor: Gregory S. Hunter
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Publication number: 20020139158Abstract: The present invention describes a composition which has as its base a dry, granular fertilizer and to which is added a flowing agent and further to which is added a hydrophobic agent. The present invention also describes methods for making this composition.Type: ApplicationFiled: March 26, 2002Publication date: October 3, 2002Applicant: Luzenac America Inc., U.S.A.Inventor: Gregory S. Hunter
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Patent number: 6074473Abstract: The present invention provides a high solids slurry and a method for producing the same. Specifically, the present invention provides a talc slurry having a solids content of at least about 58% and a viscosity of less than about 500 centipoise. The talc slurry of the present invention comprises talc, a salt and a base.Type: GrantFiled: April 9, 1998Date of Patent: June 13, 2000Assignee: Luzenac America, Inc.Inventors: Carl W. Nichols, Robert G. Cooner
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Patent number: 5773503Abstract: The present invention relates to a compacted mineral filler pellet and a method of making the same. The present invention also relates to a method of making a polymeric compound which includes a compacted mineral filler pellet.Type: GrantFiled: December 11, 1996Date of Patent: June 30, 1998Assignee: Luzenac America, Inc.Inventors: William P. Steen, David R. Bloomfield
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Patent number: 5273163Abstract: A classifier rotor mounted for rotation about a rotor axis inside a classification chamber for separating a fines fraction includes a plurality of disks mounted in parallel, spaced-apart relation along the rotor axis and a plurality of classifier blades axially mounted between the disks at the disk periphery. A uniform influx fluid distribution tube disposed between the disks of the classifier rotor is connected to a vacuum source to remove the fines fraction. The uniform influx fluid distribution tube includes a plurality of perforations of varying sizes in the region between the disks to compensate for velocity and pressure variations, thus creating a uniform air flow along the entire length of the classifier rotor.Type: GrantFiled: January 23, 1992Date of Patent: December 28, 1993Assignee: Luzenac America, Inc.Inventor: Carl W. Nichols