Patents by Inventor Joakim Carlén
Joakim Carlén 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: 9562327Abstract: The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibers, (ii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (iii) dewatering the obtained suspension to form paper.Type: GrantFiled: July 10, 2014Date of Patent: February 7, 2017Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlen, Birgitta Johansson
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Patent number: 9487917Abstract: The invention relates to a sol containing silica-based particles having an axial ratio of at least about 10 and specific surface area of at least about 600 m2/g. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and S-value up to about 25. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and a specific surface area of at least about 400 m2/g, wherein the silica-based particles are surface-modified. The invention further relates to a sol containing silica-based particles having a viscosity of at least 50 cP and silica content of at least about 3% by weight, wherein the silica-based particles have a specific surface area of at least about 400 m2/g.Type: GrantFiled: September 24, 2014Date of Patent: November 8, 2016Assignee: AKZO NOBEL N.V.Inventors: Michael Persson, Freddie Hansson, Annika Viola Pal, Lars Lindahl, Joakim Carlén
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Publication number: 20150007956Abstract: The invention relates to a sol containing silica-based particles having an axial ratio of at least about 10 and specific surface area of at least about 600 m2/g. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and S-value up to about 25. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and a specific surface area of at least about 400 m2/g, wherein the silica-based particles are surface-modified. The invention further relates to a sol containing silica-based particles having a viscosity of at least 50 cP and silica content of at least about 3% by weight, wherein the silica-based particles have a specific surface area of at least about 400 m2/g.Type: ApplicationFiled: September 24, 2014Publication date: January 8, 2015Applicant: AKZO NOBEL N.V.Inventors: Michael PERSSON, Freddie HANSSON, Annika Viola PAL, Lars LINDAHL, Joakim CARLÉN
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Patent number: 8888957Abstract: The present invention relates to a process for producing paper which comprises: providing an aqueous suspension comprising cellulosic fibers, adding to the suspension, after all points of high shear, a cationic polysaccharide; an inorganic polymer P1 being a cationic polyaluminium compound; and a polymer P2 being an anionic polymer; and, dewatering the obtained suspension to form paper.Type: GrantFiled: September 6, 2012Date of Patent: November 18, 2014Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Publication number: 20140318727Abstract: The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibres, (ii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (iii) dewatering the obtained suspension to form paper.Type: ApplicationFiled: July 10, 2014Publication date: October 30, 2014Applicant: AKZO NOBEL N.V.Inventors: Fredrik Solhage, Joakim Carlen, Birgitta Johansson
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Patent number: 8846772Abstract: The invention relates to a sol containing silica-based particles having an axial ratio of at least about 10 and specific surface area of at least about 600 m2/g. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and S-value up to about 25. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and a specific surface area of at least about 400 m2/g, wherein the silica-based particles are surface-modified. The invention further relates to a sol containing silica-based particles having a viscosity of at least 50 cP and silica content of at least about 3% by weight, wherein the silica-based particles have a specific surface area of at least about 400 m2/g.Type: GrantFiled: June 4, 2008Date of Patent: September 30, 2014Assignee: Akzo Nobel N.V.Inventors: Michael Persson, Freddie Hansson, Annika Viola Pal, Lars Lindahl, Joakim Carlén
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Patent number: 8790493Abstract: The present invention relates to a process for producing paper which comprises: (vii) providing an aqueous suspension comprising cellulosic fibers, (viii) adding to the suspension after all points of high shear a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer, and a third polymer being an organic or inorganic anionic polymer; and (ix) dewatering the obtained suspension to form paper.Type: GrantFiled: October 10, 2012Date of Patent: July 29, 2014Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Publication number: 20130269894Abstract: The present invention relates to a process for producing paper which comprises: providing an aqueous suspension comprising cellulosic fibres, adding to the suspension, after all points of high shear, a cationic polysaccharide; an inorganic polymer P1 being a cationic polyaluminium compound; and a polymer P2 being an anionic polymer; and, dewatering the obtained suspension to form paper.Type: ApplicationFiled: September 6, 2012Publication date: October 17, 2013Applicant: AKZO NOBEL N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Patent number: 8308903Abstract: The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibers, (ii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (iii) dewatering the obtained suspension to form paper.Type: GrantFiled: May 3, 2011Date of Patent: November 13, 2012Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Patent number: 8273216Abstract: The present invention relates to a process for producing paper which comprises: providing an aqueous suspension comprising cellulosic fibers, adding to the suspension, after all points of high shear, a cationic polysaccharide; and a polymer P2 being an anionic polymer; and, dewatering the obtained suspension to form paper.Type: GrantFiled: December 20, 2006Date of Patent: September 25, 2012Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Publication number: 20110247773Abstract: The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibres, (ii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (iii) dewatering the obtained suspension to form paper.Type: ApplicationFiled: May 3, 2011Publication date: October 13, 2011Applicant: AKZO NOBEL N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Patent number: 7955473Abstract: The present invention relates to a process for producing paper which comprises: (vii) providing an aqueous suspension comprising cellulosic fibres, (viii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (ix) dewatering the obtained suspension to form paper.Type: GrantFiled: December 14, 2005Date of Patent: June 7, 2011Assignee: Akzo Nobel N.V.Inventors: Fredrik Solhage, Joakim Carlén, Birgitta Johansson
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Publication number: 20100170419Abstract: The invention relates to a sol containing silica-based particles having an axial ratio of at least about 10 and specific surface area of at least about 600 m2/g. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and S-value up to about 25. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and a specific surface area of at least about 400 m2/g, wherein the silica-based particles are surface-modified. The invention further relates to a sol containing silica-based particles having a viscosity of at least 50 cP and silica content of at least about 3% by weight, wherein the silica-based particles have a specific surface area of at least about 400 m2/g.Type: ApplicationFiled: June 4, 2008Publication date: July 8, 2010Applicant: AKZO NOBEL N.V.Inventors: Michael Persson, Freddie Hansson, Annika Viola Pal, Lars Lindahl, Joakim Carlën
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Publication number: 20070151688Abstract: The present invention relates to a process for producing paper which comprises: providing an aqueous suspension comprising cellulosic fibres, adding to the suspension, after all points of high shear, a cationic polysaccharide; and a polymer P2 being an anionic polymer; and, dewatering the obtained suspension to form paper.Type: ApplicationFiled: December 20, 2006Publication date: July 5, 2007Applicant: AKZO NOBEL N.V.Inventors: Fredrik Solhage, Joakim Carlen, Birgitta Johansson
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Publication number: 20060130991Abstract: The present invention relates to a process for producing paper which comprises: (vii) providing an aqueous suspension comprising cellulosic fibres, (viii) adding to the suspension after all points of high shear: a first polymer being a cationic polymer having a charge density above 2.5 meq/g; a second polymer; and a third polymer being an organic or inorganic anionic polymer; and (ix) dewatering the obtained suspension to form paper.Type: ApplicationFiled: December 14, 2005Publication date: June 22, 2006Applicant: AKZO NOBEL N.V.Inventors: Fredrik Solhage, Joakim Carlen, Birgitta Johansson
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Publication number: 20060112855Abstract: The invention relates to a pigment composition in the form of an aqueous dispersion or slurry comprising: (c) porous aggregates formed by aggregation of colloidal primary particles of silica, aluminosilicate or a mixture thereof in an aqueous sol, said porous aggregates having a mean diameter from about 0.03 to about 25 ?m, and, (d) extender particles where the mean size of at least one dimension is larger than the mean diameter of the porous aggregates, wherein the weight ratio of porous aggregates to extender particles is from about 0.01:1 to about 3:1. The invention further relates to a process for its production, a composition for coating paper or paper board and a process for its production, and a process for coating paper or paper board and paper or paper board obtainable by the process.Type: ApplicationFiled: November 3, 2005Publication date: June 1, 2006Applicant: AKZO NOBEL N.V.Inventors: Kjell Andersson, Joakim Carlen, Erik Lindgren
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Publication number: 20060099408Abstract: The present invention relates to a process for the production of coated paper or paperboard comprising a step of applying a pigment composition as a coating to at least one side of a paper or paperboard web, said pigment composition being an aqueous dispersion comprising as pigment particles optionally aggregated colloidal particles of silica or aluminosilicate prepared from alkali metal silicate by ion exchange or pH-reduction and having a surface area from about 30 m2/g to about 450 m2/g, and at least one cationic component selected from the group consisting of water soluble aluminium salts and cationic polymers with a molecular weight from about 2000 to about 1000000 and a charge density from about 0.2 meq/g to about 12 meq/g, wherein at least about 0.4 g pigment particles from the pigment composition are applied per m2 coated side of the paper or paper board web.Type: ApplicationFiled: November 3, 2005Publication date: May 11, 2006Applicant: AKZO NOBEL N.V.Inventors: Kjell Andersson, Joakim Carlen, Erik Lindgren
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Publication number: 20060100338Abstract: The present invention relates to a pigment composition in the form of an aqueous dispersion comprising: (d) pigment particles of synthetic amorphous silica or aluminosilicate; (e) at least one water soluble aluminium salt; and, (f) at least one cationic polymer having a molecular weight from about 2000 to about 1000000 and a charge density from about 0.2 to about 12 meq/g. The invention further relates to a process for its production, use thereof, a process for coating paper or paper board and paper or paper board obtainable by the process.Type: ApplicationFiled: November 3, 2005Publication date: May 11, 2006Applicant: AKZO NOBEL N.V.Inventors: Kjell Andersson, Joakim Carlen, Erik Lindgren
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Patent number: 6100322Abstract: The invention relates to a process for the production of paper from a suspension of cellulose containing fibers, and optional fillers, comprising adding to the suspension a low molecular weight cationic organic polymer, a high molecular weight cationic or amphoteric polymer and anionic inorganic particles, forming and draining the suspension on a wire, wherein the low molecular weight polymer has a molecular weight below 700,000 and the high molecular weight polymer has a molecular weight above 1,000,000, said polymers being simultaneously added to the suspension.Type: GrantFiled: October 2, 1998Date of Patent: August 8, 2000Assignee: Eka Chemicals ABInventors: Michael Persson, Joakim Carlen, Hans Johansson, Carlos Cordoba
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Patent number: 5858174Abstract: The invention relates to a process for the production of paper from a suspension of cellulose containing fibers, and optional fillers, comprising adding to the suspension a low molecular weight cationic organic polymer, a high molecular weight cationic or amphoteric polymer and anionic inorganic particles, forming and draining the suspension on a wire, wherein the low molecular weight polymer has a molecular weight below 700,000 and the high molecular weight polymer has a molecular weight above 1,000,000, said polymers being simultaneously added to the suspension.Type: GrantFiled: July 8, 1996Date of Patent: January 12, 1999Assignee: Eka Chemicals ABInventors: Michael Persson, Joakim Carlen, Hans Johansson, Carlos Cordoba