Patents by Inventor Rosa Carceller

Rosa Carceller 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).

  • Publication number: 20220306510
    Abstract: A polymeric structure, which is obtained by polymerisation of (meth) acrylamide and at least one charged monomer in a polymerisation medium comprising at least a first host polymer, which first host polymer comprises polyvinyl alcohol. The polymeric structure may be used in making of paper, board, tissue or the like as a strength agent, or in dewatering of sludge.
    Type: Application
    Filed: June 24, 2019
    Publication date: September 29, 2022
    Inventors: Joonas LIKANDER, Rosa CARCELLER, Suhua WU, Asko KARPPI, Markus KORHONEN, Matti HIETANIEMI
  • Patent number: 11447618
    Abstract: The invention relates to a water-soluble polymer composition obtained by polymerizing in an aqueous polymerisation medium, which comprises degraded starch, at least following monomers: acrylamide and/or methacrylamide, and >2 mol-% of at least one unsaturated mono- or dicarboxylic acid(s) or salts thereof. The polymer composition has an anionic net charge at pH 7 and a dry solids content of >5 weight-%. The invention relates also to the use of the polymer composition for surface sizing of paper, board or the like as well as to a surface size composition comprising it.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: September 20, 2022
    Assignee: Kemira Oyj
    Inventors: Matti Hietaniemi, Asko Karppi, Rosa Carceller
  • Publication number: 20210189101
    Abstract: The invention relates to a water-soluble polymer composition obtained by polymerizing in an aqueous polymerisation medium, which comprises degraded starch, at least following monomers: acrylamide and/or methacrylamide, and >2 mol-% of at least one unsaturated mono- or dicarboxylic acid(s) or salts thereof. The polymer composition has an anionic net charge at pH 7 and a dry solids content of >5 weight-%. The invention relates also to the use of the polymer composition for surface sizing of paper, board or the like as well as to a surface size composition comprising it.
    Type: Application
    Filed: February 28, 2017
    Publication date: June 24, 2021
    Applicant: Kemira Oyj
    Inventors: Matti Hietaniemi, Asko Karppi, Rosa Carceller
  • Publication number: 20200399828
    Abstract: A method is disclosed for treating aqueous feed by dissolved gas flotation. The aqueous feed originates from industrial processing of fibrous material, where the aqueous feed includes an aqueous phase and solid particulate material suspended in the aqueous phase. The method includes bringing a flocculant in contact with the aqueous feed, flocculating suspended solid particulate material into flocs and contacting formed flocs with gas bubbles and inducing their flotation in a flotation basin. The flocculant includes a polymer composition having a charge density of at the most 1.7 meq/g dry and the polymer composition includes a cationic synthetic first polymer having a charge density at least 1.0 meq/g dry at pH 2.8, and at least one second polymer obtained by polymerization of (meth)acrylamide, the second polymer being polymerized in presence of the cationic first polymer, where the first polymer has a higher charge density than the second polymer.
    Type: Application
    Filed: December 14, 2018
    Publication date: December 24, 2020
    Applicant: Kemira Oyj
    Inventors: Matti Hietaniemi, Jyri Välimäki, Joonas Likander, Rosa Carceller
  • Patent number: 10858782
    Abstract: A method is disclosed for dewatering of sludge from a pulp, paper or board making process, such as deinking sludge, including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step, where a first part of the aqueous phase is removed from the sludge and to a pressing step, where a second part of the aqueous phase is removed from the sludge, thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at most 1.5 meq/g, more preferably at most 1.1 meq/g, is added to the sludge.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: December 8, 2020
    Assignee: Kemira Oyj
    Inventors: Matti Hietaniemi, Rosa Carceller, Asko Karppi, Joonas Likander, Jyri Välimäki
  • Publication number: 20200361805
    Abstract: A method for dewatering of biological sludge is disclosed. The method includes addition of a flocculant to a biological sludge, which includes an aqueous phase and a suspended solid organic material, flocculating and dewatering the sludge. The flocculant includes a polymer composition, which includes a cationic crosslinked first polymer, which is selected from crosslinked polyamines, and a cationic second polymer, which is a polymer obtained by polymerization of (meth)acrylamide and cationic monomers, the second cationic polymer being polymerized in presence of the cationic first polymer.
    Type: Application
    Filed: December 14, 2018
    Publication date: November 19, 2020
    Applicant: Kemira Oyj
    Inventors: Joonas Likander, Rosa Carceller
  • Patent number: 10800869
    Abstract: A polymer composition includes a first host polymer, which is a copolymer of (meth)acrylamide and at least one cationic first monomer, and a second polymer, which is a copolymer of (meth)acrylamide and at least one cationic second monomer. The second polymer is polymerised in presence of the first host polymer, and the first host polymer has a higher cationicity than the second polymer, the difference in cationicity of the first host polymer and the second polymer being at least 3 mol-%, at least 5 mol-%, more preferably at least 7 mol-%. The polymer composition has a standard viscosity of >2.0 mPas, measured at 0.1 weight-% solids content in an aqueous NaCl solution (1 M), at 25° C., using Brookfield VII T viscometer with UL adapter. The invention relates also to uses of said polymer composition.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: October 13, 2020
    Assignee: Kemira Oyj
    Inventors: Matti Hietaniemi, Rosa Carceller, Asko Karppi, Joonas Likander
  • Patent number: 10590607
    Abstract: The present invention relates to an interpenetrating polymer network (IPN) material comprising microcrystalline cellulose (MCC), microfib-rillated cellulose (MFC) or a mixture thereof, and at least one polymer forming an IPN together with the MCC, MFC or mixture thereof. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 17, 2020
    Assignee: Kemira Oyj
    Inventors: Rosa Carceller, Tom Lundin, Matti Hietaniemi
  • Patent number: 10584217
    Abstract: The present invention relates to an interpenetrating polymer network (IPN) material comprising a copolymer of vinylamine-vinylformamide, and a homo-polymer or a copolymer of at least one monomer selected from acrylamide or derivatives thereof, acrylic acid or derivatives thereof, or a mixture thereof forming the IPN material together with the copolymer of vinylamine-vinyl-formamide. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: March 10, 2020
    Assignee: Kemira Oyj
    Inventors: Rosa Carceller, Matti Hietaniemi, Sacha Legrand, Mari Zabihian
  • Publication number: 20200063340
    Abstract: A method is disclosed for dewatering of sludge from a pulp, paper or board making process, such as deinking sludge, including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step, where a first part of the aqueous phase is removed from the sludge and to a pressing step, where a second part of the aqueous phase is removed from the sludge, thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at most 1.5 meq/g, more preferably at most 1.1 meq/g, is added to the sludge.
    Type: Application
    Filed: December 15, 2017
    Publication date: February 27, 2020
    Applicant: Kemira Oyj
    Inventors: Matti Hietaniemi, Rosa Carceller, Asko Karppi, Joonas Likander, Jyri Välimäki
  • Publication number: 20190276578
    Abstract: A polymer composition includes a first host polymer, which is a copolymer of (meth)acrylamide and at least one cationic first monomer, and a second polymer, which is a copolymer of (meth)acrylamide and at least one cationic second monomer. The second polymer is polymerised in presence of the first host polymer, and the first host polymer has a higher cationicity than the second polymer, the difference in cationicity of the first host polymer and the second polymer being at least 3 mol-%, at least 5 mol-%, more preferably at least 7 mol-%. The polymer composition has a standard viscosity of >2.0 mPas, measured at 0.1 weight-% solids content in an aqueous NaCl solution (1 M), at 25° C., using Brookfield VII T viscometer with UL adapter. The invention relates also to uses of said polymer composition.
    Type: Application
    Filed: December 15, 2017
    Publication date: September 12, 2019
    Applicant: Kemira Oyj
    Inventors: Matti HIETANIEMI, Rosa CARCELLER, Asko KARPPI, Joonas LIKANDER
  • Publication number: 20180194906
    Abstract: The present invention relates to an interpenetrating polymer network (IPN) material comprising a copolymer of vinylamine-vinylformamide, and a homo-polymer or a copolymer of at least one monomer selected from acrylamide or derivatives thereof, acrylic acid or derivatives thereof, or a mixture thereof forming the IPN material together with the copolymer of vinylamine-vinyl-formamide. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.
    Type: Application
    Filed: May 11, 2016
    Publication date: July 12, 2018
    Applicant: Kemira Oyj
    Inventors: Rosa CARCELLER, Matti HIETANIEMI, Sacha LEGRAND, Mari ZABIHIAN
  • Patent number: 10005873
    Abstract: New polyvinylamide and/or acryl acid-based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: June 26, 2018
    Assignee: KEMIRA OYJ
    Inventors: Sacha Legrand, Marco Polverari, Rosa Carceller
  • Publication number: 20180023253
    Abstract: The present invention relates to an interpenetrating polymer network (IPN) material comprising microcrystalline cellulose (MCC), microfib-rillated cellulose (MFC) or a mixture thereof, and at least one polymer forming an IPN together with the MCC, MFC or mixture thereof. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.
    Type: Application
    Filed: December 3, 2015
    Publication date: January 25, 2018
    Applicant: Kemira Oyj
    Inventors: Rosa Carceller, Tom Lundin, Matti Hietaniemi
  • Publication number: 20160369030
    Abstract: New polyvinylamide and/or acryl acid-based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.
    Type: Application
    Filed: February 27, 2015
    Publication date: December 22, 2016
    Inventors: Sacha LEGRAND, Marco POLVERARI, Rosa CARCELLER
  • Patent number: 9034977
    Abstract: The invention relates to a polymer product obtained by polymerization of i) at least one monomer selected from N-vinylformamide and vinyl acetate, and ii) maleic anhydride to give a copolymer comprising N-vinylformamide and/or vinyl acetate and maleic anhydride followed by hydrolyzing formamide groups originating from N-vinylformamide to amino groups and/or acetate groups originating from vinyl acetate to hydroxyl groups and acid anhydride to dicarboxylic acid groups to give a water-soluble copolymer comprising amine and/or hydroxyl and carboxyl groups, wherein the molar ratio of the N-vinylformamide and/or vinyl acetate monomer to the maleic anhydride monomer is from 70:30 to 30:70. The polymer product can be used as a dispersing agent or as a scale inhibiting agent.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: May 19, 2015
    Inventors: Rosa Carceller, Ari Juppo, Reijo Aksela
  • Patent number: 8877864
    Abstract: The invention provides an anionic dispersion polymerization process, wherein the polymerization is improved by an organic isothiocyanate, such as methyl isothiocyanate.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: November 4, 2014
    Assignee: Kemira Oyj
    Inventors: Rosa Carceller, Ari Juppo
  • Publication number: 20140194564
    Abstract: The invention relates to a polymer product obtained by polymerization of i) at least one monomer selected from N-vinylformamide and vinyl acetate, and ii) maleic anhydride to give a copolymer comprising N-vinylformamide and/or vinyl acetate and maleic anhydride followed by hydrolyzing formamide groups originating from N-vinylformamide to amino groups and/or acetate groups originating from vinyl acetate to hydroxyl groups and acid anhydride to dicarboxylic acid groups to give a water-soluble copolymer comprising amine and/or hydroxyl and carboxyl groups, wherein the molar ratio of the N-vinylformamide and/or vinyl acetate monomer to the maleic anhydride monomer is from 70:30 to 30:70. The polymer product can be used as a dispersing agent or as a scale inhibiting agent.
    Type: Application
    Filed: June 15, 2012
    Publication date: July 10, 2014
    Inventors: Rosa Carceller, Ari JUPPO, Reijo AKSELA
  • Publication number: 20130303675
    Abstract: The invention provides an anionic dispersion polymerization process, wherein the polymerization is improved by an organic isothiocyanate, such as methyl isothiocyanate.
    Type: Application
    Filed: October 14, 2011
    Publication date: November 14, 2013
    Inventors: Rosa Carceller, Ari Juppo
  • Publication number: 20110073265
    Abstract: The invention relates to a process for producing paper or board from an aqueous fibre suspension, which process includes the step of adding a process chemical to the aqueous fibre suspension, said process chemical being a polymer obtained by controlled radical polymerization technique from an ethylenically unsaturated monomer, a chain transfer agent, and an initiator in a liquid medium or by controlled photopolymerization technique from an ethylenically unsaturated monomer and a photoiniferter in a liquid medium. The process chemical improves the runnability and productivity of the paper or board machine.
    Type: Application
    Filed: May 21, 2008
    Publication date: March 31, 2011
    Inventors: Rosa Carceller, Ari Juppo