Patents by Inventor Peter E. Pierini
Peter E. Pierini 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: 11312789Abstract: Provided is a process for reducing the size of ethylcellulose polymer particles comprising (a) providing a slurry comprising (i) water (ii) said ethylcellulose particles, wherein said ethylcellulose polymer particles have D50 of 100 ?m or less; (iii) surfactant comprising 1.2% or more anionic surfactants by weight based on the solid weight of said slurry, with the proviso that if the amount of anionic surfactant is 2.5% or less by weight based on the solid weight of said slurry, then said surfactant further comprises 5% or more stabilizers by weight based on the solid weight of said slurry, wherein said stabilizer is selected from the group consisting of water-soluble polymers, water-soluble fatty alcohols, and mixtures thereof. (b) grinding said slurry in an agitated media mill having a collection of media particles having a median particle size of 550 ?m or smaller. Also provided is a dispersion made by such a process.Type: GrantFiled: December 10, 2015Date of Patent: April 26, 2022Assignee: NUTRITION & BIOSCIENCES USA 1, LLCInventors: Jorg Theuerkauf, Robert B. Appell, Peter E. Pierini, Christopher J. Tucker
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Publication number: 20170369596Abstract: Provided is a process for reducing the size of ethylcellulose polymer particles comprising (a) providing a slurry comprising (i) water (ii) said ethylcellulose particles, wherein said ethylcellulose polymer particles have D50 of 100 ?m or less; (iii) surfactant comprising 1.2% or more anionic surfactants by weight based on the solid weight of said slurry, with the proviso that if the amount of anionic surfactant is 2.5% or less by weight based on the solid weight of said slurry, then said surfactant further comprises 5% or more stabilizers by weight based on the solid weight of said slurry, wherein said stabilizer is selected from the group consisting of water-soluble polymers, water-soluble fatty alcohols, and mixtures thereof. (b) grinding said slurry in an agitated media mill having a collection of media particles having a median particle size of 550 ?m or smaller. Also provided is a dispersion made by such a process.Type: ApplicationFiled: December 10, 2015Publication date: December 28, 2017Inventors: Jorg Theuerkauf, Robert B. Appell, Peter E. Pierini, Christopher J. Tucker
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Patent number: 9359450Abstract: The amount of water-insoluble fibers in a water-soluble cellulose derivative is reduced in a process comprising the steps of a) providing a water-soluble cellulose derivative having a residual amount of at least 20 ppm by weight of water-insoluble fibers in a 2 weight percent aqueous solution of the water-soluble cellulose derivative; b) mixing the water-soluble cellulose derivative of step a) with a liquid in a compounder to provide a moist water-soluble cellulose derivative having a temperature of at least 50 C and a moisture content of from 35 to 90 percent, based on the total weight of the moist cellulose derivative; and c) drying-grinding the mixture of step b) in a gas-swept impact mill to obtain a dried and ground cellulose derivative.Type: GrantFiled: March 29, 2012Date of Patent: June 7, 2016Inventors: Yvonne M. Goerlach-Doht, Juergen Hermanns, Peter E. Pierini
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Patent number: 9334416Abstract: A particulate cellulose derivative is obtained in a process of grinding and drying a moist cellulose derivative which comprises the steps of A) providing a cellulose derivative having a moisture content of from 60 to 95 percent, based on the total weight of the moist cellulose derivative, B) grinding and partially drying the moist cellulose derivative in a gas-swept impact mill; and C) contacting the ground and partially dried cellulose derivative with an additional amount of a drying gas outside the gas-swept impact mill. The obtained particulate cellulose derivative has a high untapped bulk density and a good flowability.Type: GrantFiled: March 29, 2012Date of Patent: May 10, 2016Inventors: Yvonne M. Goerlach-Doht, Juergen Hermanns, Peter E. Pierini, Marco Grossstueck, Michael Schreck
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Patent number: 8973853Abstract: In a process for producing a particulate polysaccharide derivative by dry-grinding a moist polysaccharide derivative, one or more of the properties selected from median diameter, median length, bulk density and dissolution rate is controlled by controlling the temperature of the polysaccharide derivative prior to dry-grinding. Advantageously one or more of the properties selected from median diameter, median length, bulk density and dissolution rate of the particles after dry-grinding is adjusted to a first value by a first temperature of the polysaccharide derivative prior to dry-grinding and is adjusted to a second value by a second temperature.Type: GrantFiled: July 28, 2010Date of Patent: March 10, 2015Assignee: Dow Global Technologies LLCInventors: Peter E. Pierini, Yvonne M. Goerlach-Doht, Juergen Hermanns
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Publication number: 20140018531Abstract: The amount of water-insoluble fibers in a water-soluble cellulose derivative is reduced in a process comprising the steps of a) providing a water-soluble cellulose derivative having a residual amount of at least 20 ppm by weight of water-insoluble fibers in a 2 weight percent aqueous solution of the water-soluble cellulose derivative; b) mixing the water-soluble cellulose derivative of step a) with a liquid in a compounder to provide a moist water-soluble cellulose derivative having a temperature of at least 50 C and a moisture content of from 35 to 90 percent, based on the total weight of the moist cellulose derivative; and c) drying-grinding the mixture of step b) in a gas-swept impact mill to obtain a dried and ground cellulose derivative.Type: ApplicationFiled: March 29, 2012Publication date: January 16, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Yvonne M. Goerlach-Doht, Juergen Hermanns, Peter E. Pierini
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Publication number: 20140013999Abstract: A particulate cellulose derivative is obtained in a process of grinding and drying a moist cellulose derivative which comprises the steps of A) providing a cellulose derivative having a moisture content of from 60 to 95 percent, based on the total weight of the moist cellulose derivative, B) grinding and partially drying the moist cellulose derivative in a gas-swept impact mill; and C) contacting the ground and partially dried cellulose derivative with an additional amount of a drying gas outside the gas-swept impact mill. The obtained particulate cellulose derivative has a high untapped bulk density and a good flowability.Type: ApplicationFiled: March 29, 2012Publication date: January 16, 2014Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Yvonne M. Goerlach-Doht, Juergen Hermanns, Peter E. Pierini, Marco Grossstueck, Michael Schreck
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Publication number: 20130112787Abstract: In a process for producing a particulate polysaccharide derivative by dry-grinding a moist polysaccharide derivative, one or more of the properties selected from median diameter, median length, bulk density and dissolution rate is controlled by controlling the temperature of the polysaccharide derivative prior to thy-grinding. Advantageously one or more of the properties selected from median diameter, median length, bulk density and dissolution rate of the particles after thy-grinding is adjusted to a first value by a first temperature of the polysaccharide derivative prior to thy-grinding and is adjusted to a second value by a second temperature.Type: ApplicationFiled: July 28, 2010Publication date: May 9, 2013Inventors: Peter E. Pierini, Yvonne M. Goerlach-Doht, Juergen Hermanns
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Patent number: 8133963Abstract: The invention is directed to a polypropylene resin, which is suitable for manufacturing an air quenched blown film. The resin has a melt flow rate of greater than 5 g/10 min, less than 2% xylene solubles, a pentad isotacticity of greater than 95%, an isotactic pentad/triad ratio of greater than 95%, a crystallinity of at least 65%, and a crystallization temperature of at least 127° C. The polypropylene resin contains from 500 ppm to 2500 ppm of a nucleator/clarifier additive. An quenched blown film made from resin exhibits a crystallization onset temperature of at least 116° C. and a crystallization half-life time of less 4.1 seconds or less when tested using fast DSC analysis with a scan rate of 200° C./minute.Type: GrantFiled: May 29, 2009Date of Patent: March 13, 2012Assignee: Braskem America, Inc.Inventors: Peter E. Pierini, Shaun E. Pirtle
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Publication number: 20100028702Abstract: The invention is directed to a polypropylene resin, which is suitable for manufacturing an air quenched blown film. The resin has a melt flow rate of greater than 5 g/10 min, less than 2% xylene solubles, a pentad isotacticity of greater than 95%, an isotactic pentad/triad ratio of greater than 95%, a crystallinity of at least 65%, and a crystallization temperature of at least 127° C. The polypropylene resin contains from 500 ppm to 2500 ppm of a nucleator/clarifier additive. An quenched blown film made from resin exhibits a crystallization onset temperature of at least 116° C. and a crystallization half-life time of less 4.1 seconds or less when tested using fast DSC analysis with a scan rate of 200° C./minute.Type: ApplicationFiled: May 29, 2009Publication date: February 4, 2010Applicant: Dow Global Technologies Inc.Inventors: Peter E. Pierini, Shaun E. Pirtle
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Patent number: 7361720Abstract: The invention is directed to a polypropylene resin which has a Mw/Mn of less than 5, a melt flow rate of less than 7 g/10 min., a 1% secant flexural modulus of greater 5 than 300,000 psi and less than 2 wt. % xylene solubles.Type: GrantFiled: October 7, 2003Date of Patent: April 22, 2008Assignee: Dow Global Technologies Inc.Inventors: Peter E. Pierini, Marie L. Hare, Clive P. Bosnyak
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Patent number: 7087680Abstract: The invention is directed to a polypropylene resin which has a Mw/Mn of less than 5, a melt flow rate of less than 7 g/10 min., a 1% secant flexural modulus of greater than 300,000 psi and less than 2 wt. % xylene solubles.Type: GrantFiled: October 7, 2003Date of Patent: August 8, 2006Assignee: Dow Global Technologies Inc.Inventors: Peter E. Pierini, Marie L. Hare, Clive P. Bosnyak
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Publication number: 20040122196Abstract: The invention is directed to a polypropylene resin which has a Mw/Mn of less than 5, a melt flow rate of less than 7 g/10 min., a 1% secant flexural modulus of greater than 300,000 psi and less than 2 wt. % xylene solubles.Type: ApplicationFiled: October 7, 2003Publication date: June 24, 2004Inventors: Peter E. Pierini, Marie L. Hare, Clive P. Bosnyak
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Patent number: 5788888Abstract: Described is a process for preparing a three-dimensional article of a lyotropic polymer comprising the steps of (a) forming a shaped article of a liquid crystalline solution of a lyotropic polymer; (b) washing the shaped article with a washing fluid under conditions sufficient to reduce the solvent content of the article to less than about 2,000 parts per million, wherein the dimensions of the washed article are no less than 0.05 inches by 0.05 inches by 0.05 inches. Such articles are useful for many applications, particularly those requiring fire- and/or heat-resistance.Type: GrantFiled: October 28, 1994Date of Patent: August 4, 1998Assignee: The Dow Chemical CompanyInventors: Arie Cohen, Myrna Serrano, Norman L. Madison, deceased, Peter E. Pierini, Ritchie A. Wessling, Donald E. McLemore, Donald L. Schmidt
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Patent number: 5460860Abstract: Mesogen containing biaxially oriented films are prepared from curable mixtures containing an epoxy resin and a curing agent therefor. Certain of the mesogen containing biaxially oriented films possess unique properties, such as a metallic like, highly reflective appearance. These films are useful in adhesives, coatings, laminates or composites and the like.Type: GrantFiled: May 20, 1994Date of Patent: October 24, 1995Assignee: The Dow Chemical CompanyInventors: Robert E. Hefner, Jr., Jimmy D. Earls, Peter E. Pierini, David A. Waldman, Lalitha Reddy
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Patent number: 5445779Abstract: A simplified and more efficient process is described for drying (and heat-treating) a lyotropic polybenzazole film in which the film is constrained in only the machine direction during drying (and heat-treating). The amount of stretching in the transverse direction the film undergoes prior to it being coagulated can be increased to compensate for the relaxation of the film during the drying process and the lack of stretching during the heat-treating process. Films made in this manner have acceptable finished properties.Type: GrantFiled: January 14, 1994Date of Patent: August 29, 1995Assignee: The Dow Chemical CompanyInventors: Peter E. Pierini, Myung H. Cho
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Patent number: 5405661Abstract: A structural panel for a vehicle or building contains a substrate and a layer of flame resistant polybenzazole polymer. If the substrate is heat resistant, the panel can serve as a fire barrier. If the substrate is not heat resistant, the polybenzazole layer can still serve to delay ignition and contain any volatile gases and molten polymer that forms when the panel is subjected to heat.Type: GrantFiled: August 14, 1992Date of Patent: April 11, 1995Assignee: The Dow Chemical CompanyInventors: Peter K. Kim, Peter E. Pierini, Ritchie A. Wessling
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Patent number: 5367042Abstract: Films containing polybenzazole polymer dissolved in a solvent can be mechanically stretched to provide biaxial orientation. The resulting dope film can be coagulated. The polymer film has improved properties in the direction in which stretching occurs.Type: GrantFiled: August 27, 1992Date of Patent: November 22, 1994Assignee: The Dow Chemical CompanyInventors: Peter E. Pierini, Robbert M. Vermeulen, Susan E. Dollinger
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Patent number: 5302334Abstract: A process for coagulating a polybenzazole film which includes contacting a lyotropic polybenzazole dope film that is constrained in at least two directions with a coagulant under conditions such that the polybenzazole polymer separates as a gelled moiety with the structure set such that further removal of solvent will result in no more than a 5% increase in the force necessary to constrain the film.Type: GrantFiled: May 21, 1992Date of Patent: April 12, 1994Assignee: The Dow Chemical CompanyInventors: Peter E. Pierini, Reid H. Bowman, Willie E. Rochefort, Ming-Biann Liu
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Patent number: 5292470Abstract: Films made from polybenzazole dopes can quickly be leached to remove polyphosphoric acid and other residual solvents by passing a leaching fluid such as steam through pores in the wet, never dried film. The process can reach acceptable residual phosphorous levels (1500-2000 ppm) in as little as about 2 or 3 minutes.Type: GrantFiled: January 5, 1993Date of Patent: March 8, 1994Assignee: The Dow Chemical CompanyInventors: Lalitha Reddy, Willie E. Rochefort, Ming-Biann Liu, Peter E. Pierini