Method of preparing dispersions of carboxyl-containing polymers
Abstract
Abstract DISPERSIONS OF CARBOXYL-CONTAINING POLYMERS SUCH AS 1,2-POLYBUTADIENE HAVING TERMINAL CARBOXYL GROUPS ARE PREPARED BY DISPERSING THE POLYMER IN AN AT LEAST PARTIALLY WATER-MISCIBLE ALCOHOL, SUCH AS ETHANOL, WHICH IS CHARACTERIZED BY BEING INCAPABLE OF SOLUBILIZING THE POLYMER, AND CONTACTING THE CARBOXYL-CONTAINING POLYMER WITH AN ALKALINE COMPOUND IN WATER SUCH AS SODIUM HYDROXIDE TO NEUTRALIZE AT LEAST SOME OF THE CARBOXYL GROUPS OF THE POLYMER AND THEREBY FORM THE DISPERSION. ALL OR A PART OF THE ALCOHOL CAN BE SEPARATED FROM THE DISPERSION IF DESIRED SUCH AS BY DISTILLATION UNDER VACUUM. THE DISPERSIONS CAN BE USED TO PROVIDE PROTECTIVE COATINGS ON METAL OR NON-METAL SUBSTRATES.
Inventors
- 👤 Carl Moore
- 👤 James B Louch
Bibliographic Details
Claims Analysis
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