Patents by Inventor Anton Esser

Anton Esser 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).

  • Patent number: 10626558
    Abstract: A method of producing paper and board by using at least one water-soluble amphoteric polymer is provided. The water-soluble amphoteric polymer is obtained by copolymerizing a monomer mixture containing a) at least one N-vinylcarboxamide, b) at least one monoethylenically unsaturated monomer having at least one free acid group or at least one acid group in salt form, c) optionally at least one monoethylenically unsaturated monomer other than components (a) and (b), and d) optionally at least one compound having two or more ethylenically unsaturated double bonds, and then partly or wholly hydrolyzing the —CO—R1 groups of the polymer. The cationic monomer units and the anionic monomer units differ in their respective molar fractions, each based on the total number of moles of all monomer units, by not more than 10 mol % in absolute terms.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: April 21, 2020
    Assignee: SOLENIS TECHNOLOGIES, L.P.
    Inventors: Anton Esser, Hans-Joachim Haehnle
  • Publication number: 20180216294
    Abstract: A method of producing paper and board by using at least one water-soluble amphoteric polymer is provided. The water-soluble amphoteric polymer is obtained by copolymerizing a monomer mixture containing a) at least one N-vinylcarboxamide, b) at least one monoethylenically unsaturated monomer having at least one free acid group or at least one acid group in salt form, c) optionally at least one monoethylenically unsaturated monomer other than components (a) and (b), and d) optionally at least one compound having two or more ethylenically unsaturated double bonds, and then partly or wholly hydrolyzing the —CO—R1 groups of the polymer. The cationic monomer units and the anionic monomer units differ in their respective molar fractions, each based on the total number of moles of all monomer units, by not more than 10 mol % in absolute terms.
    Type: Application
    Filed: August 4, 2016
    Publication date: August 2, 2018
    Applicant: BASF SE
    Inventors: Anton ESSER, Hans-Joachim HAEHNLE
  • Publication number: 20170362776
    Abstract: A process for producing paper or board, which process comprises ad-mixing (I) an aqueous composition of pH ?6 and (II) at least one water-soluble polymeric anionic compound to a paper stock having a pH in the range from 6 to 8 and then dewatering the paper stock by sheet formation and drying, wherein the aqueous composition comprises (a) polymers having primary amino groups and/or amidine groups to a combined content for these groups of ?1.5 meq/g of polymer, and (b) 0.01 to 50 mol % of 1,4-cyclohexanedione (b) based on the combined amount of primary amino groups and/or amidine groups of the polymers, and also to the paper or board thus obtained.
    Type: Application
    Filed: December 4, 2015
    Publication date: December 21, 2017
    Applicant: BASF SE
    Inventors: Hans-Joachim HAEHNLE, Christoph HAMERS, Anton ESSER, Hubert MEIXNER, Matthew BUCHAN, Norbert SCHALL, Stefan SPANGE, Katja TROMMLER, Hendryk WUERFEL, Susan SEIFERT, Tina WALTHER
  • Patent number: 9765483
    Abstract: The present invention relates to a process for producing paper, card and board. The present invention is based on the discovery that controlling solids content during the process in a specified manner provide enhanced initial web strength of the paper prior to drying and allows for higher machine speeds in the paper production process as compared to known processes.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: September 19, 2017
    Assignee: BASF SE
    Inventors: Anton Esser, Hans-Joachim Haehnle
  • Publication number: 20170233950
    Abstract: The invention relates to an aqueous composition comprising (a) polymers having primary amino groups and/or amidine groups to a combined content for these groups of ?1.5 meq/g of polymer, and (b) 0.01 to 50 mol % of 1,4-cyclohexanedione (b) based on the combined amount of primary amino groups and amidine groups of the polymers, wherein the pH of the aqueous composition is ?6, and further to its use as strength enhancer and to a method of producing paper and board, employment of the aqueous composition and also the paper and board thus obtained.
    Type: Application
    Filed: August 14, 2015
    Publication date: August 17, 2017
    Applicant: BASF SE
    Inventors: Hans-Joachim HAEHNLE, Christoph HAMERS, Anton ESSER, Stefan SPANGE, Katja TROMMLER, Hendryk WUERFEL, Susan SEIFERT, Tina WALTHER
  • Patent number: 9206551
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: December 8, 2015
    Assignee: BASF SE
    Inventor: Anton Esser
  • Publication number: 20150191875
    Abstract: The present invention relates to a process for production of paper, card and board comprising draining a filler-containing paper stock comprising at least one water-soluble polymer with sheet formation in the wire section and then pressing the paper in the press section, wherein a paper stock having a fibrous concentration in the range from 20 to 40 g/l has the at least one water-soluble polymer added to it, then the paper stock is diluted to a fibrous concentration in the range from 5 to 15 g/l, the diluted paper stock is drained to form a sheet and the sheet is pressed in the press section to a solids content G(x) wt % or greater and G(x) computes according to G(x)=48+(x?15)·0.
    Type: Application
    Filed: March 19, 2015
    Publication date: July 9, 2015
    Applicant: BASF SE
    Inventors: Anton ESSER, Hans-Joachim HAEHNLE
  • Patent number: 9051687
    Abstract: The present invention relates to a process for production of paper, card and board comprising draining a filler-containing paper stock comprising at least one water-soluble polymer with sheet formation in the wire section and then pressing the paper in the press section, wherein a paper stock having a fibrous concentration in the range from 20 to 40 g/l has the at least one water-soluble polymer added to it, then the paper stock is diluted to a fibrous concentration in the range from 5 to 15 g/l, the diluted paper stock is drained to form a sheet and the sheet is pressed in the press section to a solids content G(x) wt % or greater and G(x) computes according to G(x)=48+(x?15)·0.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: June 9, 2015
    Assignee: BASF SE
    Inventors: Anton Esser, Hans-Joachim Haehnle
  • Patent number: 8778139
    Abstract: A process for producing paper, board and cardboard in the presence of an aqueous slurry of components comprising finely divided fillers coated at least partly with water-soluble amphoteric copolymers, which involves adding, further to the aqueous slurry of components comprising finely divided fillers, at least one cationic and/or amphoteric polymer comprising as structural element no esters of unsaturated carboxylic acids with quaternized amino alcohols to the fiber suspension prior to sheet forming.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: July 15, 2014
    Assignee: BASF Aktiengesellschaft
    Inventors: Anton Esser, Hans-Joachim Haehnle, Tibor Adalbert Von Vadkerthy
  • Patent number: 8753479
    Abstract: The invention relates to a process for the production of paper, card and board, including the steps of draining a filler-containing paper stock, having a certain fibrous concentration and containing at least one water-soluble amphoteric copolymer, with sheet formation in a wire section, then pressing the paper in a press section, diluting the paper stock to a fibrous concentration in the range from 5 to 15 g/l, draining the diluted paper stock to form a sheet, and then pressing the sheet in the press section to a solids content G(x) wt % or greater, such that G(x) computes according to: G(x)=48+(x?15)·0.4, where x is the numerical value of a filler content of the dry paper, card or board (in wt %), and G(x) is a numerical value of the minimal solids content (in wt %) to which the sheet is pressed.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: June 17, 2014
    Assignee: BASF SE
    Inventors: Anton Esser, Hans-Joachim Haehnle
  • Publication number: 20140102649
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products.
    Type: Application
    Filed: December 13, 2013
    Publication date: April 17, 2014
    Applicant: BASF SE
    Inventor: Anton ESSER
  • Publication number: 20140053996
    Abstract: The present invention relates to a process for production of paper, card and board comprising draining a filler-containing paper stock comprising at least one water-soluble polymer with sheet formation in the wire section and then pressing the paper in the press section, wherein a paper stock having a fibrous concentration in the range from 20 to 40 g/l has the at least one water-soluble polymer added to it, then the paper stock is diluted to a fibrous concentration in the range from 5 to 15 g/l, the diluted paper stock is drained to form a sheet and the sheet is pressed in the press section to a solids content G(x) wt % or greater and G(x) computes according to G(x)=48 +(x?15)·0.
    Type: Application
    Filed: August 19, 2013
    Publication date: February 27, 2014
    Applicant: BASF SE
    Inventors: Anton ESSER, Hans-Joachim Haehnle
  • Patent number: 8647470
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of an aqueous composition comprising a nanocellulose and at least one polymer selected from the group consisting of the anionic polymers and water-soluble cationic polymers, draining of the paper stock and drying of the paper products.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: February 11, 2014
    Assignee: BASF SE
    Inventor: Anton Esser
  • Patent number: 8613833
    Abstract: Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex with a glass transition temperature of ?5 to ?50° C., preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: December 24, 2013
    Assignee: BASF SE
    Inventors: Juergen Schmidt-Thuemmes, Anton Esser, Joerg Nieberle
  • Patent number: 8597466
    Abstract: Process for the production of paper, board and cardboard having high dry strength by separate addition of a water-soluble cationic polymer and of an aqueous dispersion of a water-insoluble polymer having a content of acid groups of not more than 10 mol % or of an aqueous dispersion of a nonionic polymer, which dispersion has been made anionic, to a paper stock, draining of the paper stock and drying of the paper products. Preferably, the polymers are added to a paper stock which has a temperature of at least 40° C.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: December 3, 2013
    Assignee: BASF SE
    Inventors: Anton Esser, Hans-Joachim Haehnle
  • Patent number: 8529732
    Abstract: Process for the production of paper, board and cardboard having high dry strength by addition of a water-soluble cationic polymer and of an anionic polymer to a paper stock, draining of the paper stock and drying of the paper products, wherein an aqueous dispersion of at least one anionic latex and at least one degraded starch is used as the anionic polymer.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: September 10, 2013
    Assignee: BASF SE
    Inventors: Anton Esser, Joerg Nieberle
  • Patent number: 8486227
    Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: July 16, 2013
    Assignee: BASF SE
    Inventors: Anton Esser, Rainer Blum, Joachim Kuhn, Marc Leduc, Ralf Hemel
  • Patent number: 8465584
    Abstract: An aqueous slurry of finely divided fillers which are at least partly coated with anionic latices, wherein the slurry is obtainable by treating an aqueous slurry of finely divided fillers with an aqueous dispersion comprising at least one anionic latex and at least one degraded starch, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: June 18, 2013
    Assignee: BASF SE
    Inventors: Joerg Nieberle, Anton Esser
  • Patent number: 8449721
    Abstract: Aqueous slurries of finely divided fillers which are at least partly covered by anionic latices, the slurries being obtainable by treating aqueous slurries of finely divided fillers with at least one anionic latex which comprises, incorporated in the form of polymerized units, at least one monomer comprising phosphonic and/or phosphoric acid groups, preparation of the aqueous slurries and their use as an additive to the paper stock in the production of filler-containing paper, filler-containing cardboard or filler-containing board by draining the paper stock.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 28, 2013
    Assignee: BASF SE
    Inventors: Juergen Schmidt-Thuemmes, Anton Esser, Joerg Nieberle
  • Patent number: 8382948
    Abstract: The use of water-soluble, amphoteric copolymers which are obtainable by copolymerization of a) at least one N-vinylcarboxamide of the general formula in which R1 and R2, independently of one another, are H or C1- to C6-alkyl, b) at least one monomer which is selected from the group consisting of (b1) monoethylenically unsaturated sulfonic acids, phosphonic acids, phosphoric acid esters and derivatives thereof, and (b2) monoethylenically unsaturated mono- and dicarboxylic acids, the salts thereof and dicarboxylic anhydrides, c) if appropriate, at least one monoethylenically unsaturated monomer differing from the components (a) and (b), and d) if appropriate, at least one compound which has at least two ethylenically unsaturated double bonds in the molecule, with the proviso that the monomer mixture comprises at least one monomer (b) having at least one free acid group and/or an acid group in salt form, and subsequent partial or complete hydrolysis of the groups —CO—R1 from the monomers
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: February 26, 2013
    Assignee: BASF SE
    Inventors: Hans-Joachim Haehnle, Anton Esser