Patents by Inventor Alexander PRENZEL

Alexander PRENZEL 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: 20240010876
    Abstract: The invention relates to an adhesive tape comprising a backing consisting of a film, to at least one side of which backing an adhesive mass is applied. The film is a film that is monoxially stretched in the longitudinal direction and contains at least 90 wt. %, preferably 95 wt. %, more preferably 99 wt. % of polyester polymers.
    Type: Application
    Filed: November 24, 2021
    Publication date: January 11, 2024
    Applicant: tesa SE
    Inventors: Felix Stephan VON LAMEZAN, Jan AUGENSTEIN, Alexander PRENZEL
  • Patent number: 11680192
    Abstract: The invention relates to a polymer obtainable by the radical polymerization of at least one monomer, namely one or more (meth)acrylate monomers and optionally, in addition, vinylic comonomers, wherein the polymer has a molar mass MW of at least 5,000 g/mol and at most 200,000 g/mol and at least one of the monomers is functionalized with at least one epoxy group, wherein the proportion of the epoxide-functionalized monomer(s) (a) is more than 30 wt %.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: June 20, 2023
    Assignee: TESA SE
    Inventors: Thilo Dollase, Markus Brodbeck, Alexander Fischer, Marco Kupsky, Alexander Prenzel
  • Patent number: 11359115
    Abstract: The intention is to provide an adhesive system which is stable in storage and which when used permits precise positioning of the adhesive, and which can be crosslinked without exceeding moderate temperatures. The said system is moreover intended to provide strong adhesive bonds that attain high performance levels.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: June 14, 2022
    Assignee: TESA SE
    Inventors: Alexander Prenzel, Julia Befuss
  • Publication number: 20220041902
    Abstract: Disclosed are powerful adhesive tapes, which rapidly coat rough and/or curved surfaces with different surface energies and thereby build up high adhesion. The adhesive joints formed in this way furthermore have good shear strength, even at elevated temperatures. Finally, enduring mechanical loading on the adhesive joints does not lead to the adhesive tape peeling from the surface. This is achieved with an adhesive tape comprising at least one foamed layer and at least one adhesive compound layer, wherein the adhesive compound layer contains at least one poly(meth)acrylate, and the poly(meth)acrylate is cross-linked with at least one covalent and at least one coordinative cross-linker.
    Type: Application
    Filed: December 10, 2019
    Publication date: February 10, 2022
    Applicant: TESA SE
    Inventors: Alexander PRENZEL, Ji LI, Julia BEFUSS
  • Publication number: 20210222037
    Abstract: The invention relates to a polymer obtainable by the radical polymerization of at least one monomer, namely one or more (meth)acrylate monomers and optionally, in addition, vinylic comonomers, wherein the polymer has a molar mass MW of at least 5,000 g/mol and at most 200,000 g/mol and at least one of the monomers is functionalized with at least one epoxy group, wherein the proportion of the epoxide-functionalized monomer(s) (a) is more than 30 wt %.
    Type: Application
    Filed: April 6, 2017
    Publication date: July 22, 2021
    Inventors: Thilo DOLLASE, Markus BRODBECK, Alexander FISCHER, Marco KUPSKY, Alexander PRENZEL
  • Patent number: 11060005
    Abstract: The present invention relates to a cationically polymerizable composition comprising or consisting of: (a1) 35 to 90 wt % of at least one (meth)acrylic ester of the general formula (I) in which R1 is selected from H and CH3 and R2 is a linear or branched alkyl chain having 1 to 30 carbons; (a2) 5 to 30 wt % of at least one olefinically unsaturated monomer having at least one cationically polymerizable functional group; (a3) 5 to 30 wt % of at least one alkoxysilane-modified (meth)acrylic ester; (a4) optionally 5 to 30 wt % of at least one N-vinyl-substituted lactam; and (a5) optionally up to 5 wt % of at least one (meth)acrylic ester different from (a1) and/or of at least one olefinically unsaturated monomer which is copolymerizable with components (a1) to (a4).
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: July 13, 2021
    Assignee: TESA SE
    Inventors: Christian Schuh, Alexander Prenzel, Sarah Bamberg
  • Patent number: 10906997
    Abstract: Crosslinker-accelerator system for the thermal crosslinking of polyacrylates having functional groups capable of entering into linking reactions with epoxide groups, comprising at least one substance having at least one epoxide group as crosslinker and at least one substance of the formula R12N—CR2R3—CR4R5—(CR6R7)n—X in which the R1 independently represent hydrogen, a substituted or unsubstituted alkyl or cycloalkyl radical or together with the nitrogen atom form a 5-7-membered ring; R2, R3, R4, R5, R6 and R7 independently represent hydrogen or an alkyl radical having 1 to 8 carbon atoms or form a 5-7-membered cycloalkylene group; n=0; and X represents —OH, —OR, —SH, —SR and —PR2, in which R independently represents C1-C18 alkyl radical, C2-C18 alkenyl radical or C2-C18 alkynyl radical, an aryl group or an aliphatic or aromatic heterocycle, as accelerator.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 2, 2021
    Assignee: TESA SE
    Inventors: Alexander Prenzel, Sarah Bamberg, Jennifer Beschmann, Marten Papenbroock
  • Patent number: 10808146
    Abstract: The invention relates to a UV-cross-linked, polyacrylate-based adhesive mass that has high adhesive force and high cohesion and that can be produced by means of a hot-melt process with subsequent cross-linking. This is achieved by providing an adhesive mass that can be obtained by cross-linking a composition, which comprises at least one poly(meth)acrylate having a weight-average molar mass Mw of at least 100,000 g/mol and at least one polyfunctional ?-cleaver and is characterized in that the composition contains at least one adhesive-force-increasing resin having a weight average molar mass Mw of at most 30,000 g/mol, which resin can be obtained by polymerizing a monomer composition M1, comprising at least one compound according to formula (I) H2C?C(R1)(COOR2), wherein R1 represents a hydrogen atom or a methyl group and R2 represents a hydrogen atom or a functionalized or non-functionalized C1-C20 alkyl group.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: October 20, 2020
    Assignee: TESA SE
    Inventors: Jennifer Beschmann, Alexander Prenzel
  • Publication number: 20190284446
    Abstract: The intention is to provide an adhesive system which is stable in storage and which when used permits precise positioning of the adhesive, and which can be crosslinked without exceeding moderate temperatures. The said system is moreover intended to provide strong adhesive bonds that attain high performance levels.
    Type: Application
    Filed: October 5, 2017
    Publication date: September 19, 2019
    Inventors: Alexander PRENZEL, Julia BEFUSS
  • Patent number: 10316117
    Abstract: End-group-functionalized oligomers with controlled degrees of functionality based on styrene are produced by reacting the monomer with a regulator by means of free-radical polymerization. At least some of the quantity of regulator is added according to a prescribed program so that at every juncture t the value of the quantitative fraction added up to said juncture does not fall short of the value of the respective conversion U(t) in the polymerization reaction at said juncture t by more than 5 percentage points and does not exceed said value U(t) by more than 5 percentage points.
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: June 11, 2019
    Assignee: TESA SE
    Inventors: Stephan Zöllner, Alexander Prenzel, Bernd Lühmann, Benjamin Pütz, Helmut Ritter
  • Publication number: 20190062606
    Abstract: The present invention relates to a cationically polymerizable composition comprising or consisting of: (a1) 35 to 90 wt % of at least one (meth)acrylic ester of the general formula (I) in which R1 is selected from H and CH3 and R2 is a linear or branched alkyl chain having 1 to 30 carbons; (a2) 5 to 30 wt % of at least one olefinically unsaturated monomer having at least one cationically polymerizable functional group; (a3) 5 to 30 wt % of at least one alkoxysilane-modified (meth)acrylic ester; (a4) optionally 5 to 30 wt % of at least one N-vinyl-substituted lactam; and (a5) optionally up to 5 wt % of at least one (meth)acrylic ester different from (a1) and/or of at least one olefinically unsaturated monomer which is copolymerizable with components (a1) to (a4).
    Type: Application
    Filed: October 10, 2016
    Publication date: February 28, 2019
    Inventors: Christian SCHUH, Alexander PRENZEL, Sarah BAMBERG
  • Patent number: 10196549
    Abstract: Multi-phase polymer composition comprising a comb polymer (A) which forms a continuous acrylate phase and a discontinuous hydrocarbon phase, and at least one hydrocarbon compound (B) which is soluble in the hydrocarbon phase of the comb polymer (A), an adhesive mass comprising the multi-phase polymer composition.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: February 5, 2019
    Assignee: TESA SE
    Inventors: Marten Papenbroock, Alexander Prenzel
  • Patent number: 10174139
    Abstract: In the context of a polyacrylate-based composition, the intention is to allow controlled thermal crosslinking. This is accomplished by provision of a crosslinker-accelerator system for the thermal crosslinking of polyacrylates having functional groups suitable for entering into linking reactions with epoxide groups, comprising at least one substance comprising at least one epoxide group (crosslinker) and at least one substance conforming to the general formula (I) NR3??(I), in which the radicals R independently of one another are a hydrogen atom or an organic radical having 1 to 20 carbon atoms, with at least one of the radicals R being an organic radical with 1 to 20 carbon atoms, and comprising at least one alcoholic OH group.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: January 8, 2019
    Assignee: TESA SE
    Inventors: Alexander Prenzel, Sarah Bamberg, Jennifer Beschmann, Marten Papenbroock
  • Publication number: 20180355220
    Abstract: The invention relates to a UV-cross-linked, polyacrylate-based adhesive mass that has high adhesive force and high cohesion and that can be produced by means of a hot-melt process with subsequent cross-linking. This is achieved by providing an adhesive mass that can be obtained by cross-linking a composition, which comprises at least one poly(meth)acrylate having a weight-average molar mass Mw of at least 100,000 g/mol and at least one polyfunctional ?-cleaver and is characterized in that the composition contains at least one adhesive-force-increasing resin having a weight average molar mass Mw of at most 30,000 g/mol, which resin can be obtained by polymerizing a monomer composition M1, comprising at least one compound according to formula (I) H2C?C(R1)(COOR2), wherein R1 represents a hydrogen atom or a methyl group and R2 represents a hydrogen atom or a functionalized or non-functionalized C1-C20 alkyl group.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 13, 2018
    Inventors: Jennifer BESCHMANN, Alexander PRENZEL
  • Patent number: 10053600
    Abstract: Multilayer product comprising at least one layer of an acrylate-based foam carrier (S); and a multiphase polymer composition (P) applied to this layer; the multiphase polymer composition (P) comprising: a comb copolymer (A) which is obtainable by polymerization of at least one (meth)acrylate monomer in the presence of at least one macromer selected from the group consisting of polymerizable ethylene-butylene, ethylene-propylene, ethylene-butylene-propylene and isobutylene macromers, and which forms a continuous acrylate phase and a discontinuous hydrocarbon phase Kw; and at least one hydrocarbon component (B) which is soluble in the hydrocarbon phase Kw of the comb copolymer (A) and comprises at least one plasticizer resin and at least one solid resin; the multiphase polymer composition (P) having a continuous acrylate phase with a static glass transition temperature Tg(Ac), measured by the DSC method, and a discontinuous hydrocarbon phase Kw1, comprising the hydrocarbon component (B) and having a static
    Type: Grant
    Filed: November 19, 2014
    Date of Patent: August 21, 2018
    Assignee: TESA SE
    Inventors: Marten Papenbroock, Alexander Prenzel
  • Patent number: 10023773
    Abstract: Adhesives and pressure-sensitive adhesives comprising polymerization products of acrylates, the adhesives being meltable and comprising polymerization products of esters of (meth)acrylic acid and (meth)acrylic acid, the polymerization product having a molecular weight Mn of greater than 50 000 g/mol and Mw of greater than 500 000 g/mol.
    Type: Grant
    Filed: April 10, 2015
    Date of Patent: July 17, 2018
    Assignee: TESA SE
    Inventors: Michael Siebert, Alexander Prenzel, Inga Auktun, Jennifer Beschmann
  • Publication number: 20180155468
    Abstract: Crosslinker-accelerator system for the thermal crosslinking of polyacrylates having functional groups capable of entering into linking reactions with epoxide groups, comprising at least one substance having at least one epoxide group as crosslinker and at least one substance of the formula R12N—CR2R3—CR4R5—(CR6R7)n—X in which the R1 independently represent hydrogen, a substituted or unsubstituted alkyl or cycloalkyl radical or together with the nitrogen atom form a 5-7-membered ring; R2, R3, R4, R5, R6 and R7 independently represent hydrogen or an alkyl radical having 1 to 8 carbon atoms or form a 5-7-membered cycloalkylene group; n=0; and X represents —OH, —OR, —SH, —SR and —PR2, in which R independently represents C1-C18 alkyl radical, C2-C18 alkenyl radical or C2-C18 alkynyl radical, an aryl group or an aliphatic or aromatic heterocycle, as accelerator.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 7, 2018
    Applicant: TESA SE
    Inventors: Alexander PRENZEL, Sarah BAMBERG, Jennifer BESCHMANN, Marten PAPENBROOCK
  • Patent number: 9951162
    Abstract: Monomer composition comprising (i) acrylic monomers selected from the group consisting of (meth)acrylic acid and (meth)acrylic esters; (ii) orthoalkyl phenyl ketone- and/or orthoalkyl phenyl aldehyde-functionalized (meth)acrylate monomers; and (iii) optionally, further olefinically unsaturated monomers having functional groups; process for preparing a first polymer composition comprising the free-radical polymerization of the monomer composition, and polymer composition obtainable by this process; composition comprising the polymer composition and a dienophile which can react with hydroxy-ortho-quinodimethane functional groups in a Diels-Alder or hetero-Diels-Alder reaction and conversion of this composition to a crosslinked polymer composition.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: April 24, 2018
    Assignee: tesa SE
    Inventor: Alexander Prenzel
  • Patent number: 9908953
    Abstract: Controlled thermal crosslinking in a polyacrylate-based composition is accomplished by a crosslinker-accelerator system for the thermal crosslinking of polyacrylates having functional groups suitable for entering into linking reactions with epoxide groups, comprising at least one substance comprising at least one epoxide group (crosslinker) and at least one substance of the general formula (I) R1R2N—CR3R4—CR5R6—(CR7R8)n—NR9R10??(I) wherein the radicals R1, R2, R9 and R10 independently of one another are a hydrogen atom or a substituted or unsubstituted alkyl or cycloalkyl radical having 1 to 8 carbon atoms or an alkylene group bonded to the main chain and having 1 to 8 carbon atoms, where at least one of the radicals R1, R2, R9 and R10 is not a hydrogen atom; the radicals R3, R4, R5, R6, R7 and R8 independently of one another are a hydrogen atom or an alkyl group having 1 to 8 carbon atoms or form a 5-7-membered cycloalkylene group; and n is an integer from 0 to 4 (accelerator).
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: March 6, 2018
    Assignee: TESA SE
    Inventors: Alexander Prenzel, Sarah Bamberg, Jennifer Beschmann, Marten Papenbroock
  • Patent number: 9896521
    Abstract: Crosslinker-accelerator system for the thermal crosslinking of polyacrylates having functional groups capable of entering into linking reactions with epoxide groups, comprising at least one substance having at least one epoxide group as crosslinker and at least one substance of the formula R12N—CR2R3—CR4R5—(CR6R7)n—X in which the R1 independently represent hydrogen, a substituted or unsubstituted alkyl or cycloalkyl radical or together with the nitrogen atom form a 5-7-membered ring; R2, R3, R4, R5, R6 and R7 independently represent hydrogen or an alkyl radical having 1 to 8 carbon atoms or form a 5-7-membered cycloalkylene group; n is an integer from 0 to 4; and X represents —OH, —OR, —SH, —SR and —PR2, in which R independently represents C1-C18 alkyl radical, C2-C18 alkenyl radical or C2-C18 alkynyl radical, an aryl group or an aliphatic or aromatic heterocycle, as accelerator.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: February 20, 2018
    Assignee: tesa SE
    Inventors: Alexander Prenzel, Sarah Bamberg, Jennifer Beschmann, Marten Papenbroock