Patents Examined by Tatyana Zalukeva
  • Patent number: 6849703
    Abstract: Water-soluble polymers of esters made from acrylic acid and alkylpolyalkylene glycols, obtainable by azeotropic esterification of a mixture of acrylic acid and alkylpolyalkylene glycol in a molar ratio of from 2 to 3:1 in the presence of at least 85% by weight, based on the alkylpolyalkylene glycol, of an organic solvent which forms an azeotrope with water, followed by free-radical polymerization, in an aqueous medium, of the mixture obtained during the esterification, where the organic solvent is distilled off azeotropically from the reaction mixture during the polymerization, and the water removed by distillation is returned to the mixture or replaced by a feed of fresh water, and preparation and use of these polymers as an additive to cementitious systems.
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: February 1, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Kroner, Karl-Heinz Büchner, Gregor Brodt
  • Patent number: 6833420
    Abstract: A film having a large tensile stress in the machine direction, excellent mechanical properties and stretch-wrapping property, and that is less broken at the time of wrapping, can be favorably torn off in the transverse direction, can be intimately adhered on the container walls to be wrapped, and excellently restores its shape after it is depressed and deformed as a result of wrapping. The film for stretch-wrapping is formed of a resin composition containing, as a chief component, an ethylene/(meth)acrylic acid/(meth)acrylic acid ester terpolymer that contains not more than 7% by weight of a (meth)acrylic acid ester unit, and, optionally, containing an anti-fogging agent or a tackifier.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: December 21, 2004
    Assignee: Du Pont Mitsui Polychemicals Co., Ltd.
    Inventors: Kenichi Yoshikawa, Akira Kamikuzu
  • Patent number: 6812296
    Abstract: The present invention provides compositions and methods for removing water from a sealant composition. This includes the addition of a particularly selected anhydride to a sealant composition and further addition of an acrylic acid, in order to remove water from a sealant composition.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: November 2, 2004
    Inventors: Frederick F. Newberth, III, Peter J. Chupas
  • Patent number: 6800708
    Abstract: The invention relates to a new process for the preparation of functionalized telechelics based on vinyl polymers, the telechelics prepared in this way and their use in the plastics, fibers or coating sector.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: October 5, 2004
    Assignee: Bayer Aktiengesellschaft
    Inventors: Martin Melchiors, Hartwig Höcker, Helmut Keul, Dirk Achten