Preparation of ether-ester starch derivative
Abstract
Abstract THE DISCLOSURE DESCRIBES A MIXED DEXTRIN ETHER-ESTER DERIVATIVE AND SPECIFICALLY HYDROXYETHYL OR HYDROXYPROPYL STARCH DEXTRIN ETHER-ESTERS OF DIBASIC ORGANIC ACID ANHYDRIDES, PREFERABLY SUCCINIC OR MALEIC ANHYDRIDES. THE PRODUCT IS MADE BY AN ESSENTIALLY DRY PROCESS INVOLVING THE EATING OF INTIMATELY CONTACTED HYDROXYETHYL OR HYDROXYPROPYL STARCH ORSTRARCH DEXTRIN WITH DIBASIC ORGANIC ACID ANHYDRIDE AT A TEMPERATURE OF 100-160*C. IN THE PRESENCE OF 0.5% TO 10% MOISTURE FOR SELECTED TIMES TO PRODUCE A PRODUCT OF ABOUT 0.0016 TO ABOUT 0.16 DEGREE OF SUBSTITUTION. THESE PRODUCTS ARE IN UNSWOLLEN GRANULE FORM AND ARE USEFUL AS THICKENERS AND AS ADHESIVES, WHICH CAN INCLUDE BORAX, ALKALI METAL HYDROXIDE AND WATER.
Inventors
- 👤 L Kovats
Bibliographic Details
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