Patents by Inventor Ueli Sulser
Ueli Sulser 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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Publication number: 20130030087Abstract: A comb polymer and use thereof for improving the processing of hydraulically setting compositions. The comb polymer has ester, amide and/or ether groups on side chains bound to a main chain and the main chain has at least one acrylic acid unit A or a salt thereof and at least one methacrylic acid unit M or a salt thereof. Processes for producing a hydraulically setting composition with longer processing time.Type: ApplicationFiled: September 21, 2012Publication date: January 31, 2013Applicant: Sika Technology AGInventors: Ueli SULSER, Christina Hampel, Jörg Zimmermann
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Patent number: 8362117Abstract: This disclosure relates to stabilizing polycarboxylates, such polycarboxylate ethers, in a presence of an inorganic powder at an elevated temperatures by using at least one antioxidant.Type: GrantFiled: March 7, 2011Date of Patent: January 29, 2013Assignee: Sika Technology AGInventors: Christian Buerge, Ueli Sulser, Franz Wombacher, Dieter Honert, Oliver Blask
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Patent number: 8273814Abstract: The present invention relates to emulsifying polymers, in particular to the use of these polymers for the stable emulsification of hydrophobic additives in aqueous concrete plasticizers.Type: GrantFiled: July 31, 2008Date of Patent: September 25, 2012Assignee: Sika Technology AGInventors: Ueli Sulser, Anna Krapf, Ulf Velten
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Patent number: 8273808Abstract: A polymer P as a dispersant for gypsum compositions, as well as gypsum compositions including the polymer P. The polymer P includes at least one acid unit and at least one long side chain with a molecular weight of at least 1800 g/mol, including polyoxyalkylene groups, and has an acid content of 1.5 to 4 acid groups per gram of polymer.Type: GrantFiled: July 30, 2009Date of Patent: September 25, 2012Assignee: Sika Technology AGInventors: Christina Hampel, Ueli Sulser, Jabbar Al Shemari, Jorg Zimmermann
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Publication number: 20110245379Abstract: A polymer (P) is disclosed which includes amide and ester groups. The polymer can be produced by a process whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed. In a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. Polymers produced by the above method can be included in hydraulic-setting compositions before and after hardening by an addition of water.Type: ApplicationFiled: June 14, 2011Publication date: October 6, 2011Applicant: Sika Technology AGInventors: Ueli Sulser, Irene Schober, Ulf Velten, Anna Krapf
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Publication number: 20110213054Abstract: This disclosure relates to stabilizing polycarboxylates, such polycarboxylate ethers, in a presence of an inorganic powder at an elevated temperatures by using at least one antioxidant.Type: ApplicationFiled: March 7, 2011Publication date: September 1, 2011Applicant: SIKA TECHNOLOGY AGInventors: Christian BUERGE, Ueli Sulser, Franz Wombacher, Dieter Honert, Oliver Blask
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Patent number: 8008374Abstract: A process for preparing a polymer P having amide and ester groups in the solid state of aggregation, comprising (a) reacting a homo- or copolymer P1 of (meth)acrylic acid, itaconic acid or crotonic acid with at least one monohydroxy compound E at a temperature up to 200° C. to give a polymer P2, so that anhydride groups form in addition to ester groups, (b) cooling the polymer P2 prepared in step (a) being cooled to below 60° C. so that the polymer P2 is present in the solid state of aggregation or as supercooled melt, and (c) amidating the polymer P2 having anhydride groups and present in the solid state of aggregation or as supercooled melt with at least one amine compound A at temperatures below 60° C., the amine compound A used in step (c) being present in the solid state of aggregation or on or in a solid carrier material.Type: GrantFiled: October 26, 2007Date of Patent: August 30, 2011Assignee: Sika Technology AGInventors: Ueli Sulser, Anna Krapf, Ulf Velten
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Patent number: 7994259Abstract: The invention relates to a method for the production of a polymer (P) comprising amide and ester groups, whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed and, in a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. The invention further relates to polymers produced by the above method, the use thereof in hydraulic-setting compositions and said hydraulic-setting compositions before and after hardening by addition of water.Type: GrantFiled: March 18, 2005Date of Patent: August 9, 2011Assignee: Sika Technology AGInventors: Ueli Sulser, Irene Schober, Ulf Velten, Anna Krapf
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Publication number: 20110178208Abstract: Polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems including the polymer P. The polymer P includes at least one acid unit, at least one ester unit, and at least one unit containing terephthalate or naphthalate.Type: ApplicationFiled: October 29, 2008Publication date: July 21, 2011Applicant: SIKA TECHNOLOGY AGInventors: Christina Hampel, Ulf Velten, Ueli Sulser, Jabbar Al Shemari, Norman Blank
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Publication number: 20110160351Abstract: A polymer P as a dispersant for gypsum compositions, as well as gypsum compositions including the polymer P. The polymer P includes at least one acid unit and at least one long side chain with a molecular weight of at least 1800 g/mol, including polyoxyalkylene groups, and has an acid content of 1.5 to 4 acid groups per gram of polymer.Type: ApplicationFiled: July 30, 2009Publication date: June 30, 2011Applicant: SIKA TECHNOLOGY AGInventors: Christina Hampel, Ueli Sulser, Jabbar Al Shemari, Jorg Zimmermann
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Publication number: 20110160349Abstract: A polymer P for prolonging the flowability of water-reduced aqueous hydraulically setting compositions, and a method for prolonging the flowability of water-reduced aqueous hydraulically setting compositions.Type: ApplicationFiled: August 26, 2009Publication date: June 30, 2011Applicant: SIKA TECHNOLOGY AGInventors: Lukas Frunz, Ueli Sulser, Jorg Zimmermann, Jurgen Gresser
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Publication number: 20100305238Abstract: The present invention relates to polymers P as dispersants, in particular as liquefiers, for hydraulically setting systems, and hydraulically setting systems comprising the polymer P. The polymer P comprises at least one acid unit, at least one ester unit, at least one unit containing a tetrahydrofurfuryl group, and optionally at least one amide unit.Type: ApplicationFiled: October 29, 2008Publication date: December 2, 2010Inventors: Christina Hampel, Jabbar Al Shemari, Ulf Velten, Ueli Sulser
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Publication number: 20100197840Abstract: The present invention relates to emulsifying polymers, in particular to the use of these polymers for the stable emulsification of hydrophobic additives in aqueous concrete plasticizers.Type: ApplicationFiled: July 31, 2008Publication date: August 5, 2010Applicant: SIKA TECHNOLOGY AGInventors: Ueli Sulser, Anna Krapf, Ulf Velten
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Publication number: 20100137476Abstract: The present invention relates to the use of a polymer P as a dispersant, particularly as a liquefier, for plaster compositions as well as plaster compositions comprising the polymer P. The polymer P comprises at least one acid unit, at least one ester unit, and at least one amide unit, and the ratio of the acid units to the ester and amide units is between 2 and 6.Type: ApplicationFiled: June 11, 2008Publication date: June 3, 2010Applicant: SIKA TECHNOLOGY AGInventors: Ueli Sulser, Burkhard Mueller, Christina Hampel
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Publication number: 20100093895Abstract: The present invention relates to a process for the preparation of a polymer P having amide and ester groups in the solid state of aggregation, in a first step (a) a homo- or copolymer P1 of (meth)acrylic acid, itaconic acid or crotonic acid being reacted with at least one monohydroxy compound E at a temperature up to 200° C. to give a polymer P2, so that anhydride groups form in addition to ester groups, in a second step (b) the polymer P2 prepared in step (a) being cooled to below 60° C. so that the polymer P2 is present in the solid state of aggregation or as supercooled melt, and in a third step (c) the polymer P2 having anhydride groups and present in the solid state of aggregation or as supercooled melt being amidated with at least one amine compound A at temperatures below 60° C., the amine compound A used in the third step (c) being present in the solid state of aggregation or on or in a solid carrier material.Type: ApplicationFiled: October 26, 2007Publication date: April 15, 2010Applicant: SIKA TECHNOLOGY AGInventors: Ueli Sulser, Anna Krapf, Ulf Velten
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Publication number: 20080119602Abstract: The invention relates to polymers in a solid state which may be obtained by reaction of at least one polymer, produced from at least one monomer, selected from unsaturated mono- or di-carboxylic acids, or analogues of unsaturated mono- or di-carboxylic acids and optionally at least one ethylenically-unsaturated monomer with at least one polymer which is terminated at one end by terminal groups which are non-reactive under normal reaction conditions and hydroxy- or amino-functionalised at the other end thereof and, optionally, at least one amine.Type: ApplicationFiled: November 2, 2007Publication date: May 22, 2008Applicant: SIKA SCHWEIZ AGInventors: Ueli Sulser, Irene Schober, Urs Mader, Ulf Velten
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Publication number: 20080021169Abstract: The invention relates to a method for the production of a polymer (P) comprising amide and ester groups, whereby, in a first step, a homo- or co-polymer (P1) of (meth)acrylic acid is reacted with a monohydroxy compound (E) at a temperature of up to 200° C., such that, in addition to ester groups, anhydride groups are formed and, in a second step, the anhydride groups formed in the first step are reacted with a monoamine compound (A) at temperatures significantly below 100° C. The invention further relates to polymers produced by the above method, the use thereof in hydraulic-setting compositions and said hydraulic-setting compositions before and after hardening by addition of water.Type: ApplicationFiled: March 18, 2005Publication date: January 24, 2008Inventors: Ueli Sulser, Irene Schober, Ulf Velten, Anna Krapf
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Publication number: 20060004148Abstract: The invention relates to polymers in a solid state which may be obtained by reaction of at least one polymer, produced from at least one monomer, selected from unsaturated mono- or di-carboxylic acids, or analogues of unsaturated mono- or di-carboxylic acids and optionally at least one ethylenically-unsaturated monomer with at least one polymer which is terminated at one end by terminal groups which are non-reactive under normal reaction conditions and hydroxy- or amino-functionalised at the other end thereof and, optionally, at least one amine.Type: ApplicationFiled: March 19, 2003Publication date: January 5, 2006Applicant: SIKA SCHWEIZ AGInventors: Ueli Sulser, Irene Schober, Urs Mader, Ulf Vehen
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Patent number: 6855752Abstract: Polymers for cement dispersing admixtures, which show different performing properties in concrete are described. All polymers are based on a composition of reactants, namely a) a poly(acrylic acid), b) a polyalkyleneglycol-monoalkylether and, optionally c) a ?-amino-polyalkylene-glycol-?-alkylether and/or d) a primary or secondary amine. By keeping the composition of reactants constant and varying only the reaction time, polymers with different properties can easily be achieved. Such polymers are suitable for pre-cast, readymix or for increasing workability over time, just depending on reaction time. Polymers of the invention can be used as single polymer or in polymer blends. For this, the kinetics of the used polymer analogous condensation reaction was intensively studied. Additionally, the benefit of amines as reactant regarding stability and hydrolysis velocity of cleavable side groups was investigated.Type: GrantFiled: March 29, 2001Date of Patent: February 15, 2005Assignee: Sika Schweiz AGInventors: Ulf Velten, Ueli Sulser, Jürg Widmer, Irene Schober, Theodor A. Bürge
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Patent number: 6548589Abstract: A multipurpose cement dispersing, shrinkage compensating and anticorrosive polymer and an admixture comprising said polymer, which improve the workability and the early strength development of fresh concrete, are described. Said polymer is an ester- and amid group-modified acrylic polymer, obtainable by aqueous solution radical copolymerization of (1) acrylic or methacrylic acid with (2) an acrylic or methacrylic methoxy-polyalkyleneglycolester monomer having 2 to 300 moles of an oxyalkylene group each having 2 to 3 carbon atoms, (3) optionally an acrylic or methacrylic methoxy-polyalkyleneglycolamide monomer having 2 to 300 moles of an oxyalkylene group each having 2 to 3 carbon atoms, (4) an acrylic or methacrylic ester of a tertiary aminoalkanol and (5) optionally an acrylic amide of a primary or secondary aliphatic, cycloaliphatic or aromatic amine.Type: GrantFiled: March 22, 2001Date of Patent: April 15, 2003Assignee: Sika Schweiz AGInventors: Jürg Widmer, Ueli Sulser, Ulf Velten, Irene Schober, Theodor A. Bürge