Steam jet cooking method for making aqueous resin emulsions and compositions containing such emulsions for coating paper
Abstract
Abstract PREPARATION OF AN AQUEOUS EMULSION OF MELTABLE, OILSOLUBLE BUT WATER INSOLUBLE, ACIDIC POLYMERIC MATERIAL OF PHENOL-ALDEHYDE OR ALKYL PHENOL-ACETYLENE RESINS, AND A PROTECTIVE COLLOID-FORMING BINDER OF STARCHES OR GUMS FOR USE AS A PAPER COATING COMPOSITION OF BETWEEN 15 AND 70% TOTAL SOLIDS CONTENTS. SUCH AS EMULSION IS PREPARED BY FLOWING AN AQUEOUS STREAM OF RESIN AND STARCH THROUGH A CONFINED HEATING ZONE OF AN EDUCTOR SYSTEM INTO CONTACT AND ADMIXTURE WITH A STEAM JET IN SUCH WEIGHT PROPORTIONS AND UNDER SUCH PRESSURE AND TEMPERATURE CONDITIONS AS TO CONVERT THE RESIN WITHOUT FURTHER MECHANICAL GRINDING THEREOF INTO SPHERICAL PARTICLES OF ABOUT 10 MICRONS OR LESS MAXIMUM DIMENSION DISPERSED IN COOKED STARCH AS A PROTECTIVE COLLOID THEREFOR. THE FINAL RESIN-CONTAINING EMULSION CAN OPTIONALLY INCLUDE PIGMENTS, DISPERSANTS AND ANIONIC SURFACTANTS.
Inventors
- 👤 Clyde W Steele
Bibliographic Details
Claims Analysis
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