Patents by Inventor Rudolf Weissgerber

Rudolf Weissgerber 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: 6989191
    Abstract: The invention relates to a paper composite material with repulp-resistant adhesive coating, consisting of a paper carrier and an adhesive layer, characterized in that an intermediate coat of a dispersion polymer film containing a protective colloid and/or an emulsifying agent and with a glass transition temperature Tg of ?20° to 40° is applied between the paper carrier and the adhesive coating. The invention also relates to a method for the production of paper composite material with repulp-resistant adhesive coating.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: January 24, 2006
    Assignee: Wacker-Chemie GmbH
    Inventors: Rudolf Weissgerber, Thomas Bastelberger
  • Patent number: 6794466
    Abstract: The present invention elates to a vinyl acetate based polymer latex composition obtained by emulsion polymerization of: (a) polyvinyl alcohol, (c) a monomer mixture comprising vinyl acetate, and (d) optionally one or more additional co-monomer(s), in presence of (c) 0.0001-0.05 wt. % of a chain transfer agent, based on total monomer weight, said vinyl acetate based polymer latex composition having a weight average particle size ≧400 nm and a higher shear thinning factor than the vinyl acetate based polymer latex composition (a), (b) and (d) obtained in the absence of the chain transfer agent (c). According to one embodiment, emulsion polymerization is carried out in presence of 0.001 to 0.05 wt. % of a chain transfer agent selected from the group consisting of aldehydes and chain transfer agents having a similar chain transfer constant with regard to vinyl acetate as the monomer. According to another embodiment, emulsion polymerization is carried out in presence of 0.0001 to 0.01 wt.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: September 21, 2004
    Assignee: Air Products Polymers, L.P.
    Inventors: Helmut Zecha, Rudolf Weissgerber, Francis Petrocelli
  • Patent number: 6746555
    Abstract: The invention provides low-emission adhesives based on an aqueous, protective-colloid-free polymer dispersion or water-redispersible dispersion powders, obtainable therefrom, of vinyl acetate-ethylene copolymers, obtainable by free-radically initiated emulsion polymerization, in aqueous medium and in the presence of one or more emulsifiers, of a comonomer mixture comprising a) from 5 to 50% by weight of ethylene, b) from 20 to 80% by weight of at least one vinyl ester from the group of vinyl esters of unbranched or branched carboxylic acids having 1 to 9 carbon atoms whose homopolymers have a glass transition temperature Tg >0° C., c) from 5 to 70% by weight of at least one vinyl ester from the group of vinyl esters of branched carboxylic acids having 8 to 13 carbon atoms whose homopolymers have a glass transition temperature Tg <0° C., d) from 0.
    Type: Grant
    Filed: July 8, 2000
    Date of Patent: June 8, 2004
    Assignee: Wacker-Chemie GmbH
    Inventors: Holger Künstle, Rudolf Weissgerber
  • Publication number: 20040048061
    Abstract: The invention relates to a paper composite material with repulp-resistant adhesive coating, consisting of a paper carrier and an adhesive layer, characterized in that an intermediate coat of a dispersion polymer film containing a protective colloid and/or an emulsifying agent and with a glass transition temperature Tg of −20° to 40° is applied between the paper carrier and the adhesive coating. The invention also relates to a method for the production of paper composite material with repulp-resistant adhesive coating.
    Type: Application
    Filed: June 16, 2003
    Publication date: March 11, 2004
    Applicant: Wacker-Chemie GmbH
    Inventors: Rudolf Weissgerber, Thomas Bastelberger
  • Publication number: 20030109620
    Abstract: The present invention elates to a vinyl acetate based polymer latex composition obtained by emulsion polymerization of:
    Type: Application
    Filed: October 19, 2001
    Publication date: June 12, 2003
    Inventors: Helmut Zecha, Rudolf Weissgerber, Francis Petrocelli
  • Patent number: 6552115
    Abstract: The present invention relates to a vinyl acetate based polymer latex composition obtained by emulsion polymerization, the polymer comprising PVOH, and a monomer mixture, said monomer mixture comprising vinyl acetate, and a pre-crosslinking monomer selected from one or more polyethylenically unsaturated compounds wherein said pre-crosslinking monomer is present in amount of less than 0.01% by weight based on the total monomer content and which pre-crosslinking monomer is initially charged to the polymerization reaction mixture. The invention further relates to use of the vinyl acetate based polymer latex in an adhesive, preferably a woodworking adhesive and to an adhesive, preferably a woodworking adhesive comprising said latex.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: April 22, 2003
    Assignee: Air Products Polymers, L.P.
    Inventors: Helmut Zecha, Rudolf Weissgerber, Frank Geiger
  • Patent number: 6414087
    Abstract: The invention relates to a process for preparing an aqueous polymer dispersion for removable pressure-sensitive adhesive films by means of free-radically initiated aqueous emulsion polymerization of one or more ethylenically unsaturated monomers from the group consisting of esters of acrylic acid and methacrylic acid with branched or unbranched alcohols having 1 to 12 carbon atoms, vinyl esters of branched or unbranched carboxylic acids having 1 to 12 carbon atoms, vinyl-aromatics, vinyl halides, olefins and dienes, which comprises copolymerizing from 0.01 to 2.0% by weight of polar, ionic or nonionic comonomers or mixtures thereof, and if polar ionic comonomers, alone or in a mixture, are copolymerized, the proportion thereof is not more than 1.0% by weight, and the amounts in % by weight are based in each case on the overall weight of the comonomers.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: July 2, 2002
    Assignee: Wacker-Chemie GmbH
    Inventors: Abdulmajid Hashemzadeh, Mihai Gurau, Rudolf Weissgerber, Walter Dobler
  • Publication number: 20020025430
    Abstract: The invention relates to a paper composite material with repulp-resistant adhesive coating, consisting of a paper carrier and an adhesive layer, characterized in that an intermediate coat of a dispersion polymer film containing a protective colloid and/or an emulsifying agent and with a glass transition temperature Tg of −20° to 40° is applied between the paper carrier and the adhesive coating. The invention also relates to a method for the production of paper composite material with repulp-resistant adhesive coating.
    Type: Application
    Filed: August 9, 2001
    Publication date: February 28, 2002
    Inventors: Rudolf Weissgerber, Thomas Bastelberger
  • Patent number: 6242512
    Abstract: The invention provides a redispersible polymer powder based on a mixture of water-insoluble polymer and a water-soluble atomized protective colloid which can be de-activated through a pH change. In addition, the invention concerns aqueous dispersions that can be prepared with the polymer powder and the use of the polymer powder or its aqueous dispersions as a bonding agent in adhesives, plasters or paints.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: June 5, 2001
    Assignee: Wacker Chemie GmbH
    Inventors: Reiner Figge, Harald Zeh, Rudolf Weissgerber
  • Patent number: 6140400
    Abstract: Redispersible tackifier powder compositions which are redispersible in water are provided and which are comprised of one or more tackifying substances and from 2 to 50% by weight of one or more water-soluble low molecular weight homo or copolymers of olefinically unsaturated mono or dicarboxylic acids or their anhydrides. The copolymers also contain other free-radically polymerizable monomers. Antiblocking agents can also be present. Adhesives containing the compositions are also provided.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: October 31, 2000
    Assignee: Wacker-Chemie GmbH
    Inventors: Reiner Figge, Rudolf Weissgerber
  • Patent number: 5296532
    Abstract: The invention relates to adhesive compositions for gluing wood containing aqueous vinyl ester graft copolymer dispersions and water-soluble acid metal salts or free acids, in which the adhesive compositions exhibit outstanding resistance to hot water and have high storage stability. The vinyl ester graft copolymer comprises from 2 to 12 percent by weight, based on the total weight of the graft copolymer, of one or more polyvinyl alcohols having a degree of hydrolysis of from 60 to 99 mol persent and 88 to 98 percent by weight, based on the total weight of the graft copolymer, of a grafting monomer mixture. The grafting monomer mixture contains from 5 to 50 percent by weight, based on the total weight of the monomer mixture, of vinyl esters of saturated, highly branched aliphatic monocarboxylic acids having 9 or 10 carbon atoms, vinyl pivalate, diisopropyl maleate, diisopropyl fumarate, vinyl chloride and mixtures thereof.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: March 22, 1994
    Assignee: Wacker-Chemie GmbH
    Inventors: Reinhard Haerzschel, Rudolf Weissgerber, Herbert Kaiser, Wilhelm Kaiser
  • Patent number: 4997879
    Abstract: Novel pressure-sensitive aqueous adhesive dispersions comprising 40 to 65% by weight, based on the dispersion weight, of a copolymer produced by radical emulsion polymerization of ethylene, vinyl esters of saturated carboxylic acids of 2 to 12 carbon atoms, ethylenically unsaturated carboxylic acids, ethylenically unsaturated hydroxyalkyl functional compounds, optionally present (meth)acrylic acid esters with alkyl of 4 to 12 carbon atoms and optionally present mono- or poly-ethylenically unsaturated compounds having a second order transition temperature of -20.degree. to -60.degree. C. and a K value of 50 to 180, characterized in that the copolymer was obtained by polymerization of(a) 10-45% by weight of ethylene(b) 0-25% by weight of acrylic ester(s)(c) 40-89% by weight of vinyl ester(s)(d) 0.5-4% by weight of ethylenically unsaturated carboxylic acids(e) 0.5-10% by weight of ethylenically unsaturated hydroxyalkyl-functional compounds(f) 0-0.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: March 5, 1991
    Assignee: Wacker-Chemie GmbH
    Inventors: Rudolf Weissgerber, Klaus Marquardt, Peter Ball, Manfred Selig, Fritz Stallbauer
  • Patent number: 4339455
    Abstract: A 1-(3-pyridyl)-2,2,2-trihaloethyl compound of the formula I ##STR1## in which n is 0 or 1, R represents methyl and X is iodide, R' represents a radical of the formula II ##STR2## wherein V, Y and Z each represent a chlorine or bromine atom, A represents a radical of the general formula III ##STR3## in which B' is oxygen or sulphur and B stands for a member of the group consisting of an aliphatic radical having from 1-10 C-atoms of the group consisting of alkenyl radicals and alkyl radicals of the branched and straight chain type, the phenyl radical, an aralkyl radical having from 7-12 C-atoms and an amino group of the general formula IV ##STR4## in which F and D are identical or different, and represent a member of the group consisting of hydrogen, aliphatic radicals of the branched or straight chain type and having from 1-10 C-atoms, the phenyl radical, a substituted phenyl radical containing at least one substituent selected from the group consisting of lower alkoxy, lower alkanoyl, lower alkyl ester, COOH
    Type: Grant
    Filed: July 17, 1979
    Date of Patent: July 13, 1982
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Fritz Sauter, Otto Eberle, Beate Suss, Rudolf Weissgerber
  • Patent number: 4322516
    Abstract: A copolymer having good properties for use as a pressure-sensitive adhesive from an aqueous dispersion comprising:(a) from 10% to 30% by weight of ethylene units,(b) from 29% to 69% by weight of acrylic ester units,(c) from 20% to 55% by weight of vinyl acetate units,(d) from 0.2% to 8% by weight of (meth)acrylamide units, and(e) from 0 to 12% of other olefinically-unsaturated monomer units copolymerizable with the above,said copolymer having a glass transition temperature of from -20.degree. C. to -60.degree. C. and a K-value according to Fikentscher, measured in tetrahydrofuran, of from 50 to 180; as well as processes to make the same and aqueous dispersions of the same for use as pressure-sensitive adhesives.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: March 30, 1982
    Assignee: Wacker-Chemie GmbH
    Inventors: Hubert Wiest, Rudolf Weissgerber, Erwin Lieb
  • Patent number: 4296017
    Abstract: Pressure-sensitive adhesives which contain preferably from 60% to 85% by weight of graft copolymers for use as polymeric pressure-sensitive adhesives, and from 15% to 40% by weight of plasticizers such as phthalate or phosphate plasticizers. The graft copolymer consists of from 5% to 30% by weight of a graft base and from 70% to 95% by weight of grafted-on monomer units. The graft base is a copolymer with from 40% to 85% by weight of ethylene units and from 15% to 60% by weight of vinyl acetate units and optionally up to 10% by weight of monomer units of other unsaturated compounds. It may be replaced wholly or partially by other graft bases. The grafted-on monomer units consist of from 30% to 80% by weight of units of vinyl esters of short-chained carboxylic acids, especially vinyl acetate, from 20% to 70% by weight of units of vinyl esters of relatively long-chained carboxylic acids, for example vinyl laurate, and/or units of esters of .alpha.,.beta.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: October 20, 1981
    Assignee: Wacker-Chemie GmbH
    Inventors: Rudolf Weissgerber, Alois Stoll, Herbert Kandler, Hans-Herbert Nunner, Christine Eichelseder, Helmut Pangeri
  • Patent number: 4189486
    Abstract: 1-(3-Pyridyl)-2,2,2-trihaloethyl compounds of the general formula I ##STR1## in which n is 0 or 1, R represents oxygen, hydrogen or an organic radical having at the most 12 C-atoms, m is 0 when R is oxygen, m is 1/2 or 1 when R is hydrogen or an aliphatic or aralkyl radical, and X represents a negative ion, R' represents a radical of the general formula II ##STR2## wherein V, Y, Z represent chlorine or bromine and may be identical or different, but are preferably identical; A represents hydrogen or a radical of the general formula III ##STR3## wherein B' is oxygen or sulphur, and B stands for an organic radical having up to 12 C atoms, or for an amino group of the general formula IV ##STR4## wherein F and D are identical or different, and represent hydrogen or organic radicals having at most 12 C-atoms; A may further be a sulphonyl group of the general formula --SO.sub.2 --B, in which B has the same meaning as in formula III.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: February 19, 1980
    Assignee: Consortium fur Elektrochemische Industrie GmbH
    Inventors: Fritz Sauter, Otto Eberle, Beate Suss, Rudolf Weissgerber