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Alkyd resin composition and metals coated therewith

  • US 2,873,210 A
  • Filed: 01/17/1957
  • Issued: 02/10/1959
  • Est. Priority Date: 01/17/1957
  • Status: Expired due to Term
First Claim
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1. A METAL ARTICLE HAVING A MULTI-LAYER COATING COMPRISING AN UNDERCOAT AND SUPERPOSED DRIED TOPCOAT OF METHYL METHACRYLATE LACQUER IN ADHERENT CONTACT THEREWITH, SAID UNDERCOAT COMPRISING A BAKED LAYER OF A COATING COMPOSITION COMPRISING AN ALKYD RESIN FORMED BY THE REACTION OF (A) A DICARBOXYLIC ACID COMPONENT COMPRISING AT LEAST ABOUT 25 MOLE PERCENT OF HEXACHOLOENDOMETHYLENETRAHYDROPHTHALIC ACID (B) AT LEAST ONE OF THE GROUP CONSISTING OF TALL OIL, SEMI-DRYING OILS, DRYING OILS AND FATTY ACIDS DERIVABLE THEREFROM AND (C) AT LEAST ONE POLYOL, SAID ALKYD RESIN BEING CHARACTERIZED BY HAVING AN OIL LENGTH OF ABOUT FROM 20 T/ 45, AN ACID NUMBER OF LESS THAN ABOUT 50 AND UNREACTED HYDROXYL EQUIVALENT TO ABOUT FROM 05 TO 50 PERCENT BY WEIGHT OF GLYCEROL BASED ON THE TOTAL WEIGHT OF ALKYD RESIN.

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