Patents Assigned to Kemira Chemicals, Inc.
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Patent number: 9404216Abstract: A polyester surfactant includes a condensation esterification product of a) a polyhydric alcohol, b) a dimer or trimer of an C2 to C42 acid, and c) polyethylene glycol and polypropylene glycol. The polyhydric alcohol is selected from glycerol, arabitol, sorbitol, sorbitan, mannitol, mannitan, erythritol, pentaerythritol, or mixtures thereof. The polyester surfactant is used for deinking, for example, printed waste paper. A method for deinking includes a step of contacting an aqueous pulp slurry with the addition of a composition comprising a polyester surfactant.Type: GrantFiled: August 6, 2013Date of Patent: August 2, 2016Assignee: KEMIRA CHEMICALS, INC.Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
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Patent number: 9309137Abstract: Scale inhibitor compositions and methods of inhibiting scale formation generally include a tagged scale inhibiting (co)polymer including at least one scale inhibiting moiety and an imidazole moiety. The imidazole moiety fluoresces at a wavelength of about 424 nm and can be used to detect the amount of scale inhibitor present.Type: GrantFiled: March 5, 2015Date of Patent: April 12, 2016Assignee: Kemira Chemicals Inc.Inventors: Lucas Moore, Laura Clapp
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Patent number: 9150779Abstract: A well treatment fluid and method of use includes water, at least one hydratable polymer, an optional crosslinking agent, and a delayed release percarbonate formulation effective to reduce initial viscosity of the fluid after a period of time. Also disclosed are processes for fracturing a subterranean formation.Type: GrantFiled: February 22, 2013Date of Patent: October 6, 2015Assignee: Kemira Chemicals Inc.Inventors: Carolina Hanna Matilda Anderson, Mona Ezzelarab, Cecilla Eva Maria Johansson, Carl Wilhelm Aften, Walter Philip Watson, Richard Anthony Lalama, Geoffrey Allen Monteith, Frank Schinkel
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Patent number: 8980123Abstract: Scale inhibitor compositions and methods of inhibiting scale formation generally include a tagged scale inhibiting (co)polymer including at least one scale inhibiting moiety and an imidazole moiety. The imidazole moiety fluoresces at a wavelength of about 424 nm and can be used to detect the amount of scale inhibitor present.Type: GrantFiled: April 22, 2013Date of Patent: March 17, 2015Assignee: Kemira Chemicals Inc.Inventors: Lucas Moore, Laura Clapp
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Publication number: 20130312922Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.Type: ApplicationFiled: August 6, 2013Publication date: November 28, 2013Applicant: Kemira Chemicals, Inc.Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
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Patent number: 8524036Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.Type: GrantFiled: October 22, 2012Date of Patent: September 3, 2013Assignee: Kemira Chemicals, Inc.Inventors: Terrence Cotter, Scott Rosencrance, Robert Wilson
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Patent number: 8507597Abstract: The present invention relates to a cost-effective and environmentally friendly polymeric defoamer formulation for use in various industrial applications that does not contain oil, EBS or free silicone.Type: GrantFiled: June 29, 2012Date of Patent: August 13, 2013Assignee: Kemira Chemicals, Inc.Inventors: James Martin, Robert Wilson, Scott Rosencrance, David Previs
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Patent number: 8501670Abstract: A well treatment fluid and method of use includes water, at least one hydratable polymer, an optional crosslinking agent, and a delayed release percarbonate formulation effective to reduce initial viscosity of the fluid after a period of time. Also disclosed are processes for fracturing a subterranean formation.Type: GrantFiled: October 15, 2008Date of Patent: August 6, 2013Assignee: Kemira Chemicals Inc.Inventors: Carolina Hanna Matilda Andersson, Mona Ezzelarab, Cecilla Eva Maria Johansson, Carl Wilhelm Aften, Walter Philip Watson, Richard Anthony Lalama, Geoffrey Allen Monteith, Frank Schinkel
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Publication number: 20130037229Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.Type: ApplicationFiled: October 22, 2012Publication date: February 14, 2013Applicant: Kemira Chemicals, Inc.Inventor: Kemira Chemicals, Inc.
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Patent number: 8338341Abstract: The invention provides a process for the production of a granule of a coated oxidizing compound which granule has good delayed release properties, said process comprising a) providing cores of an oxidizing compound produced by fluidized bed spray granulation, b) spraying on the oxidizing compound cores an aqueous solution of metal sili-cate in a fluidized bed, said aqueous solution comprising at least 15% by weight metal silicate, and c) drying to form a metal silicate coating layer on the oxidizing compound core, provided that the amount of metal silicate coating layer is at least 8%, preferably at least 10% by weight based on the total weight of the granule. The invention also provides such granule and well treatment fluids including such granule, and processes for use.Type: GrantFiled: October 15, 2008Date of Patent: December 25, 2012Assignees: Kemira Kemi AB, Kemira Chemicals, Inc.Inventors: Mona Ezzelarab, Carl Aften, Carolina Andersson, Cecilia Johansson, Richard Lalama, Geoffrey Monteith, Lars-Inge Olsson, Ajse Sandqvist, Frank Schinkel, Markus Svensson, Walter Watson, Caroline Wegner
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Patent number: 8317973Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants containing a condensation esterification product of a polyhydric alcohol, a multimeric acid, and at least one polyalkylene glycol for use in flotation deinking under traditional alkaline, reduced alkali, and true neutral deinking conditions. The polyester deinking surfactants of the present invention will effectively exhibit greater selectivity than traditional flotation deinking surfactants. In particular, the polyester deinking surfactants can give better foam control, improved yield, and no loss in ERIC reduction.Type: GrantFiled: November 11, 2009Date of Patent: November 27, 2012Assignee: Kemira Chemical, Inc.Inventors: Terrence Cotter, Scott W. Rosencrance, Robert Wilson
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Publication number: 20120264863Abstract: The present invention relates to a cost-effective and environmentally friendly polymeric defoamer formulation for use in various industrial applications that does not contain oil, EBS or free silicone.Type: ApplicationFiled: June 29, 2012Publication date: October 18, 2012Applicant: Kemira Chemicals, Inc.Inventors: James Martin, Robert Wilson, Scott Rosencrance, David Previs
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Patent number: 8287690Abstract: The present invention provides methods for deinking printed waster paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.Type: GrantFiled: January 18, 2011Date of Patent: October 16, 2012Assignee: Kemira Chemicals, Inc.Inventors: Scott Rosencrance, Charles M. Ngome, Kevin M. Hale
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Patent number: 8236889Abstract: The present invention relates to a cost-effective and environmentally friendly polymeric defoamer formulation for use in various industrial applications that does not contain oil, EBS or free silicone.Type: GrantFiled: May 15, 2009Date of Patent: August 7, 2012Assignee: Kemira Chemicals, Inc.Inventors: James Martin, Robert Wilson, Scott Rosencrance, David Previs
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Publication number: 20120032093Abstract: Scale inhibitor compositions and methods of inhibiting scale formation generally include a tagged scale inhibiting (co)polymer including at least one scale inhibiting moiety and an imidazole moiety. The imidazole moiety fluoresces at a wavelength of about 424 nm and can be used to detect the amount of scale inhibitor present.Type: ApplicationFiled: August 3, 2010Publication date: February 9, 2012Applicant: KEMIRA CHEMICALS INC.Inventors: Lucas Moore, Laura Clapp
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Patent number: 8097125Abstract: The invention relates to a composition comprising a (a) a temporary wet strength agent component capable of forming hemi-acetal bonds with the fibers of a tissue web to provide initial wet strength, subsequent rapid degradation of the initial wet strength when the tissue web contacts water; and (b) a sizing agent component capable of imparting water-repelling properties to the tissue web; such that the strength agent component and the sizing agent component are present in sufficient amounts so that when the composition is added to a tissue pulp slurry during a tissue-making process, tissue made from the tissue-making process exhibits a combination of (i) improved initial wet tensile, (ii) improved decay, and (iii) absorbency.Type: GrantFiled: September 26, 2005Date of Patent: January 17, 2012Assignee: Kemira Chemicals, Inc.Inventors: Michael Ryan, David Dauplaise, William Brevard
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Publication number: 20110220308Abstract: A paper adhesive composition includes a cationic non-crosslinked acidified solution of a polyamidoamine with the repeating units wherein n?1; m=1 or 2; X?m is chloride, bromide, iodide, sulfate, bisulfate, nitrate, oxalate, alkyl carboxylate, aryl carboxylate, hydrogen phosphate, dihydrogen phosphate, alkyl sulfonate, aryl sulfonate, or a combination comprising at least one of the foregoing anions; R1 is a divalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; R2 is hydrogen or a monovalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; and R3 is a divalent hydrocarbon radical derived from a dibasic carboxylic acid. Also disclosed are methods of creping paper with the composition.Type: ApplicationFiled: May 27, 2011Publication date: September 15, 2011Applicant: KEMIRA CHEMICALS, INC.Inventor: Clayton J. Campbell
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Publication number: 20110174454Abstract: A method for making an opacity relevant grade paper or paperboard product, such as a communication type paper used for printing and writing applications, utilizes an effective amount of quaternized alkanolamine fatty acid ester compounds as an opacification aid to control the optical properties of the paper or paperboard product as a wet-end additive to a papermaking operation. Using the quaternized alkanolamine fatty acid ester compound can improve the opacity of the paper or paperboard product, maintain the opacity of the paper while reducing the use of other opacification aids, such as inorganic fillers and/or pigments, and allow for a reduction in paper grammage without a compromise in opacity. The improvements in paper optical properties are achieved without adversely affecting other characteristics of the paper product such as bulk value, tensile strength, tear index, and the like.Type: ApplicationFiled: March 22, 2011Publication date: July 21, 2011Applicant: KEMIRA CHEMICALS, INC.Inventors: Brian N. Brogdon, Gary M. Freeman, Thomas C. Friel, Scott W. Rosencrance
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Publication number: 20110155334Abstract: The present invention provides methods for deinking printed waster paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.Type: ApplicationFiled: January 18, 2011Publication date: June 30, 2011Applicant: KEMIRA CHEMICAL, INC.Inventors: Scott Rosencrance, Charles M. Ngome, Kevin M. Hale
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Publication number: 20110108221Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.Type: ApplicationFiled: November 11, 2009Publication date: May 12, 2011Applicant: Kemira Chemicals, Inc.Inventors: Terrence Cotter, Scott W. Rosencrance, Robert Wilson