Patents by Inventor Walter Kamutzki

Walter Kamutzki 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).

  • Process for recycling silicone-coated paper
    Patent number: 5567272
    Abstract: The present invention relates to a process for recycling silicone-coated paper by disintegration and new formation of sheets, which comprises carrying out the disintegration in the presence of one or more salts of monophosphoric esters.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: October 22, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Hentzschel, Walter Kamutzki, Dieter Wolf
  • Neutral sizing agent for base paper stuff with the use of cationic plastics dispersions
    Patent number: 5518585
    Abstract: Neutral sizing of base paper pulp in a conventional aqueous suspension at a neutral pH for the production of sized, acid-free base paper by internal sizing with the use of aqueous cationic copolymer dispersions having a minimum cation activity of 20 .mu.mol/g of solids, more than half of the cationic charge being located on the surface of the dispersion copolymer particles, in combination with polymeric retention aids, the weight ratio of the polymeric retention aid to the cationic dispersion copolymer preferably being 0.3:1 to 0.005:1, in a quantity of up to 2% by weight of cationic dispersion copolymer, relative to the dry weight of the raw cellulose fibers.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: May 21, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans U. Huth, Walter Kamutzki
  • Aqueous solutions of polyamidoamine-epichlorohydrin resins, and preparation and use thereof
    Patent number: 5019606
    Abstract: Aqueous solutions of polyamidoamine-epichlorohydrin resins and preparation and use thereof.A stable aqueous resin solution having a pH of not more than 7 and containing as the resin a water-thinnable polyamidoamine-epichlorohydrin resin (A) obtained by reaction of a water-thinnable basic polyamidoamine (B) comprising an acid component (B.sub.1) and an amine component (B.sub.2) with epichlorohydrin (C), the level of organically bound chlorine in the resin (A) being not more than 4% by weight.The present invention further relates to a process for preparing these products and to the use thereof in particular for increasing the wet strength of paper.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 28, 1991
    Assignee: Hoechst AG
    Inventors: Manfred Marten, Walter Kamutzki
  • Polybase from amino amido carboxylic acid, polyamine and difunctional alkylating agent
    Patent number: 4977239
    Abstract: A water-soluble organic polybase which is useful for the cationization of asbestos-free, cellulose fiber filter media is prepared by reacting a mixture of a compound of the formulaR.sup.2 --CO--R.sup.1 --COOHand a polyalkyleneimine with a difunctional alkylating agent, wherein R.sup.1 is a single bond or alkylene having 1 to 10 carbon atoms and R.sup.2 is inter alia a moiety of the formulaH.sub.2 N--(CH.sub.2).sub.u --NH--(CH.sub.2).sub.u --NH).sub.wwherein u is the number 2, 3, 4 or 5 and w is the number 0, 1, 2 or 3.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: December 11, 1990
    Assignee: Cassella Aktiengesellschaft
    Inventors: Walter Kamutzki, Karl-Heinz Keil