Patents Examined by Necholus Ogdon, Jr.
  • Glycol-free aqueous anti-freeze agent containing dicarboxylic salts
    Patent number: 8202444
    Abstract: The present invention relates to an aqueous antifreeze composition comprising 10 to 50% by weight of one or more dicarboxylic acids, preferably aliphatic dicarboxylic acids having 4 to 12 carbon atoms in the form of the alkali metal, ammonium or alkaline earth metal salt. Preferably, these salts are used in combination with at least one further substance. This gives antifreeze compositions with a good frost protective action, good heat conductivity and good protection against corrosion.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: June 19, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Wenderoth, Monica Fernandez Gonzalez, Stefan Dambach, Ludwina Machetanz, Uwe Nitzschke