Patents Examined by P. D. Mulcahy
  • Coating compositions
    Patent number: 4916176
    Abstract: An aqueous coating composition comprising a film-forming material, a metallic pigment, phosphate inhibitor being either an orthophosphoric acid or an organic acid ester of phosphoric acid containing a group of formula (I): ##STR1## a cationic salt of one or more of the following metals: sodium, potassium, magnesium, calcium, strontium, barium, vanadium, cobalt, nickel, copper, zinc or silver; and a water containing diluent.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: April 10, 1990
    Assignee: Imperical Chemical Industries PLC
    Inventors: Zafirios Vachlas, Stephen J. Thorne