Patents by Inventor Gerhard Auchter

Gerhard Auchter 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: 9574077
    Abstract: The present invention relates to aqueous polymer dispersions having a polymer content of at least 55% by weight that are suitable for pressure sensitive adhesives. The invention also relates to a process for preparing these aqueous polymer dispersions and also to the use of the aqueous polymer dispersions in pressure sensitive adhesives and, respectively, pressure sensitive adhesive compositions, especially in pressure sensitive adhesives for transparent substrates, such as plastics labels. The aqueous polymer dispersions have a polymer content of at least 55% by weight, based on the total weight of the dispersion, the polymer being composed of ethylenically unsaturated monomers M and having a glass transition temperature below ?10° C., in which the dispersed polymer particles have a polymodal particle size distribution, in which at least 70% by weight have a particle diameter of below 350 nm.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: February 21, 2017
    Assignee: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Gledison Fonseca, Cornelis Petrus Beyers
  • Patent number: 9518199
    Abstract: Described is a pressure-sensitive adhesive (PSA) polymer formed from (i) 50%-95% by weight of n-butyl acrylate, (ii) 1%-20% by weight of ethyl acrylate, (iii) 1%-20% by weight of vinyl acetate, (iv) 0.1%-5% by weight of at least one ethylenically unsaturated acid or ethylenically unsaturated acid anhydride, and (v) 0% to 30% by weight of other ethylenically unsaturated compounds different from the monomers (i) to (iv). The PSA polymer can be used for producing self-adhesive articles, more particularly paper labels or film labels.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: December 13, 2016
    Assignee: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Cornelis Petrus Beyers
  • Publication number: 20160115310
    Abstract: The present invention relates to aqueous polymer dispersions having a polymer content of at least 55% by weight that are suitable for pressure sensitive adhesives. The invention also relates to a process for preparing these aqueous polymer dispersions and also to the use of the aqueous polymer dispersions in pressure sensitive adhesives and, respectively, pressure sensitive adhesive compositions, especially in pressure sensitive adhesives for transparent substrates, such as plastics labels. The aqueous polymer dispersions have a polymer content of at least 55% by weight, based on the total weight of the dispersion, the polymer being composed of ethylenically unsaturated monomers M and having a glass transition temperature below ?10° C., in which the dispersed polymer particles have a polymodal particle size distribution, in which at least 70% by weight have a particle diameter of below 350 nm.
    Type: Application
    Filed: January 4, 2016
    Publication date: April 28, 2016
    Inventors: Matthias Gerst, Gerhard Auchter, Gledison Fonseca, Cornelis Petrus Beyers
  • Patent number: 9273236
    Abstract: The present invention relates to aqueous polymer dispersions having a polymer content of at least 55% by weight that are suitable for pressure sensitive adhesives. The invention also relates to a process for preparing these aqueous polymer dispersions and the use of the aqueous polymer dispersions in pressure sensitive adhesives and, respectively, pressure sensitive adhesive compositions, especially in pressure sensitive adhesives for transparent substrates, such as plastics labels. The aqueous polymer dispersions have a polymer content of at least 55% by weight, based on the total weight of the dispersion. The polymer is composed of ethylenically unsaturated monomers and has a glass transition temperature below ?10° C., in which the dispersed polymer particles have a polymodal particle size distribution, in which at least 70% by weight of the polymer particles have a particle diameter of below 350 nm.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 1, 2016
    Assignee: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Gledison Fonseca, Cornelis Petrus Beyers
  • Publication number: 20120213992
    Abstract: Described is a pressure-sensitive adhesive (PSA) polymer formed from (i) 50%-95% by weight of n-butyl acrylate, (ii) 1%-20% by weight of ethyl acrylate, (iii) 1%-20% by weight of vinyl acetate, (iv) 0.1%-5% by weight of at least one ethylenically unsaturated acid or ethylenically unsaturated acid anhydride, and (v) 0% to 30% by weight of other ethylenically unsaturated compounds different from the monomers (i) to (iv). The PSA polymer can be used for producing self-adhesive articles, more particularly paper labels or film labels.
    Type: Application
    Filed: October 28, 2010
    Publication date: August 23, 2012
    Applicant: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Cornelis Petrus Beyers
  • Publication number: 20120077030
    Abstract: Described is a process for preparing an aqueous pressure-sensitive adhesive dispersion from ethylenically unsaturated, free-radically polymerizable monomers. In a first stage, a first polymer is prepared by free-radical emulsion polymerization. In a second stage, an aqueous polymer dispersion is prepared in the presence of the first polymer, where the glass transition temperature calculated for a polymer prepared from the monomers of the second stage is less than ?20° C. The monomers of the first stage comprise monomers with acid groups. The polymerization of the first stage takes place at a low pH of less than 5. The acid groups of the first polymer are neutralized during, or before and during, the polymerization of the second stage to an extent such that the pH of the polymer dispersion at the end of the second stage is greater than 5. The aqueous pressure-sensitive adhesive dispersions can be used for producing self-adhesive articles, especially self-adhesive labels and adhesive tapes.
    Type: Application
    Filed: September 20, 2011
    Publication date: March 29, 2012
    Applicant: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Michael Groß, Daniel Wilms, Roelof Balk
  • Publication number: 20110226416
    Abstract: Described is a polymer film with multiphase film morphology. The polymer film, within a layer, has regions of a first polymer and regions of a second polymer, and is prepared from an aqueous polymer dispersion, comprising the two polymers in dispersed form and a tackifier. The glass transition temperature of the second polymer is greater than that of the first polymer and less than 20° C. The concentration of the tackifier in the polymer film is greater in the regions of the first polymer than in the regions of the second polymer. Described also are polymer dispersions for producing polymer films with multiphase film morphology, and also applications as adhesive, coating or sealant, as for example for producing self-adhesive paper labels.
    Type: Application
    Filed: March 18, 2011
    Publication date: September 22, 2011
    Applicant: BASF SE
    Inventors: Matthias GERST, Gerhard Auchter, Rüdiger Stark
  • Publication number: 20110033701
    Abstract: The present invention relates to aqueous polymer dispersions having a polymer content of at least 55% by weight that are suitable for pressure sensitive adhesives. The invention also relates to a process for preparing these aqueous polymer dispersions and also to the use of the aqueous polymer dispersions in pressure sensitive adhesives and, respectively, pressure sensitive adhesive compositions, especially in pressure sensitive adhesives for transparent substrates, e.g., plastics labels. The aqueous polymer dispersions have a polymer content of at least 55% by weight, based on the total weight of the dispersion, the polymer being composed of ethylenically unsaturated monomers M and having a glass transition temperature below ?10° C.
    Type: Application
    Filed: April 14, 2009
    Publication date: February 10, 2011
    Applicant: BASF SE
    Inventors: Matthias Gerst, Gerhard Auchter, Gledison Fonseca, Cornelis Petrus Beyers
  • Patent number: 7632902
    Abstract: The invention relates to a method for producing an aqueous polymer dispersion having a polymer solids content of ?50% by weight by carrying out the radically initiated aqueous emulsion polymerization of ethylenically unsaturated compounds (monomers). The inventive method is characterized in that: a) a mixture is provided in a polymerization vessel and contains a partial quantity 1 consisting of: deionized water, 0.001 to 0.5 parts by weight of a polymer with a weighted average particle diameter of ?100 nm; 0.0001 to 0.1 parts by weight of dispersants, and 0.5 to 10 parts by weight of monomers, and the monomers are polymerized with a conversion of ?80% [polymerization step A], and; b) afterwards, a monomer emulsion containing partial quantity 2, which consists of deionized water, 0.1 to 5 parts by weight of dispersants and 90 to 99.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: December 15, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Dirk Wulff, Jesper Feldthusen, Gerhard Auchter, Gerald Wildburg, Ralf Fink
  • Publication number: 20050176865
    Abstract: A process for preparing an aqueous polymer dispersion having a polymer solids content ?50% by weight by free-radically initiated aqueous emulsion polymerization of ethylenically unsaturated compounds (monomers) comprises a) charging a mixture comprising portion 1 of deionized water, from 0.001 to 0.5 part by weight of polymer seed having a weight-average particle diameter ?100 nm, from 0.0001 to 0.1 part by weight of dispersant, and from 0.5 to 10 parts by weight of monomers to a polymerization vessel and polymerizing the monomers to a conversion ?80% [stage A] and b) subsequently supplying to the resultant reaction mixture under polymerization conditions a monomer emulsion comprising portion 2 of deionized water, from 0.1 to 5 parts by weight of dispersant, and from 90 to 99.
    Type: Application
    Filed: May 21, 2003
    Publication date: August 11, 2005
    Applicant: Basf Aktiengesellschaft
    Inventors: Dirk Wulff, Jesper Jensen, Gerhard Auchter, Gerald Wildburg, Ralf Fink
  • Patent number: 6870001
    Abstract: An emulsifier mixture comprising an emulsifier I of the formula in which X is O, S, CH2, NH or NR7, one or two of the radicals R1 to R6 are a group SO3?K? and the remainder of R1 to R6 are H or a C1-C18 alkyl group, R7 is a C1-C18 alkyl group and K is a countercation, an emulsifier II of the formula R8—O—(Z?O)n—SO3?K? in which the variables have the following meanings: R8: C1-C18 alkyl Z: CH2—CH2 or n: an integer from 1 to 50 K: a cation, and a nonionic emulsifier III.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: March 22, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Dirk Wulff, Gerhard Auchter
  • Patent number: 6759490
    Abstract: The invention provides a process for preparing an aqueous polymer dispersion of a copolymer CP of at least two different monomers M1 and M2 by free-radical aqueous emulsion polymerization of the monomers M in the presence of at least one initiator, at least 80% of the monomers M and at least 75% of the initiator being supplied continuously to the polymerization reaction during its course, which comprises changing the rate at which the initiator is supplied to the polymerization reaction a number of times, or continuously, during the polymerization reaction. The invention further provides the polymer dispersions obtainable by this process, polymer powders prepared therefrom, and for the use of the dispersions and/or of the polymer powders to prepare pressure sensitive adhesives.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: July 6, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Gerst, Gerhard Auchter, Bernhard Schuler
  • Patent number: 6620870
    Abstract: Pressure-sensitive adhesives comprising an aqueous polymer dispersions wherein the polymer is composed of from 50 to 99.9% by weight of at least one C1-C12 alkyl (meth)acrylate (monomers a) from 0.05 to 20% by weight of at least one vinylaromatic compound (monomers b) from 0.05 to 10% by weight of at least one ethylenically unsaturated hydroxy compound (monomers c) from 0 to 10% by weight of an ethylenically unsaturated acid or an acid anhydride (monomers d) and from 0 to 30% by weight of other ethylenically unsaturated compounds (monomers e) the weight percentages being based on the polymer, and the polymer dispersion comprising an emulsifier consisting to the extent of at least 5% by weight of aromatic carbon atoms (and called aromatic emulsifier for short) or an emulsifier mixture consisting to the extent of at least 10% by weight of an aromatic emulsifier.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: September 16, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Gerst, Gerhard Auchter, Bernhard Schuler
  • Publication number: 20030125459
    Abstract: Described is a process for preparing aqueous polymer dispersions by at least two-stage free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers, comprising:
    Type: Application
    Filed: December 12, 2002
    Publication date: July 3, 2003
    Applicant: BASF Akiengesellschaft
    Inventors: Dirk Wulff, Alexander Centner, Gerhard Auchter
  • Patent number: 6583252
    Abstract: A polymer composed overall of from 50 to 99.98 % by weight of C1-C12 alkyl (meth)acrylate a), from 0.02 to 10 % by weight of a vinylaromatic compound b), from 0 to 10 % by weight of an ethylenically unsaturated acid or of an ehtylenically unsaturated acid anhydride c),  and from 0 to 40% by weight of further monomers d), the percentages by weight being based on the polymer and the polymer being obtainable by polymerizing the monomers a) to d) in at least two stages which differ in their content of vinylaromatic compounds in such a way that the content of vinylaromatic compounds in the vinylaromatics-rich stage is at least 5 times as great as in the low-vinylaromatics stage.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: June 24, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Schuler, Gerhard Auchter, Johannes Türk, Rik Noordijk, Johannes Dobbelaar, Reinhard Bächer, Wolfgang Hümmer
  • Publication number: 20030045589
    Abstract: An emulsifier mixture comprising an emulsifier I of the formula 1
    Type: Application
    Filed: April 18, 2002
    Publication date: March 6, 2003
    Applicant: BASF Akiengesellschaft
    Inventors: Dirk Wulff, Gerhard Auchter
  • Publication number: 20020139958
    Abstract: A solution comprises a salt of a monoalkyl or dialkyl ester of a sulfonated dicarboxylic acid a) and an organic solvent b) having a boiling point of more than 250° C. at 1 bar.
    Type: Application
    Filed: November 29, 1999
    Publication date: October 3, 2002
    Inventors: GERHARD AUCHTER, ANDREE DRAGON, ORAL AYDIN, FRIEDRICH WIRSING
  • Publication number: 20020052433
    Abstract: A solution comprises a salt of a monoalkyl or dialkyl ester of a sulfonated dicarboxylic acid a) and an organic solvent b) having a boiling point of more than 250° C. at 1 bar.
    Type: Application
    Filed: November 23, 2001
    Publication date: May 2, 2002
    Applicant: BASF Aktiengesellschaft
    Inventors: Gerhard Auchter, Andree Dragon, Oral Aydin, Friedrich Wirsing
  • Patent number: 6303726
    Abstract: A polymer which contains from 50 to 99.98% by weight of a C1-C12 alkyl (meth)acrylate a), from 0.02 to 10% by weight of a vinylaromatic compound b), from 0 to 10% by weight of an ethylenically unsaturated acid or of an ethylenically unsaturated acid anhydride c), and from 0 to 40% by weight of further monomers d), the percentages by weight being based on the polymer and the polymer being obtainable by polymerizing the monomers a) to d) in at least two stages which differ in their content of vinylaromatic compounds in such a way that the content of vinylaromatic compounds in the vinylaromatics-rich stage is at least 5 times as great as in the low-vinylaromatics stage.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: October 16, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernhard Schuler, Gerhard Auchter, Johannes Türk, Rik Noordijk, Johannes Dobbelaar, Reinhard Bächer, Wolfgang Hümmer
  • Publication number: 20010027241
    Abstract: A polymer composed overall of
    Type: Application
    Filed: May 21, 2001
    Publication date: October 4, 2001
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Bernhard Schuler, Gerhard Auchter, Johannes Turk, Ruj Noordijk, Johannes Dobbelaar, Reinhard Bacher, Wolfgang Hummer