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Bivalent metal hydroxide treatment of drying oil modified alkyd resins

  • US 3,110,690 A
  • Filed: 06/11/1956
  • Issued: 11/12/1963
  • Est. Priority Date: 06/11/1956
  • Status: Expired due to Term
First Claim
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1. A METHOD OF IMPROVING THE QUALITY OF A DRYING OIL MODIFIED ALKYD RESIN CONTAINING A STOICHIOMETRIC EXCESS OF HYDROXYL GROUPS OVER CARBOXYL GROUPS, AN ACID VALUE IN EXCESS OF 10 BUT NOT IN EXCESS OF 50 AND A CURE VALUE IN EXCESS OF ZERO IN SOLUTION IN A VOLATILE ORGANIC SOLVENT WHICH COMPRISES ADDING TO SAID RESINOUS SOLUTION A QUANTITY OF AN INORGANIC HYDROXIDE-FORMING BASICALLY-REACTIVE BIVALENT METAL ION SOURCE AVAILABLE IN SAID SOLUTION AN SUFFICIENT TO NEUTRALIZE AT LEAST IN PART SAID ACID VALUE AND HEATING SAID COMBINATION AT A TEMPERATURE OF FROM 125* TO 350*F. UNTIL THE ACID VALUE AND THE CURE VALUE HAVE BEEN REDUCED TO FORM A STABLE LIQUID PRODUCT.

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