Process for the manufacture of lowdensity nitrocellulose granules
Abstract
Abstract PROCESS OF PREPARING NITROCELLULOSE GRANULES HAVING A BULK DENSITY OF BETWEEN 0.4 AND 0.6 G./CM3 FROM A NITROCELLULOSE LACQUER PREPARED BY STIRRING UNDER WATER NITROCELLULOSE STABILIZERS AND A NITROCELLULOSE SOLVENT INSOLUBLE IN THE WATER, ADDING TO THE LACQUER STILL BEING STIRRED A PROTECTIVE COLLOID AND A WATER-SOLUBLE ALKALI METAL OR ALKALINE EARTH METAL SALT, THEREAFTER REDUCING THE STIRRING SPEED WHEREUPON THE LACQUER BREAKS UP INTO DROP-LIKE PARTICLES, FURTHER REDUCING THE STIRRING SPEED AS TO CAUSE THE PARTICLES, OF LACQUER TO FLOW TOGETHER AGAIN,MAKING A SECOND ADDITION OF PROTECTIVE COLLOID AND SALT, THEN INCREASING THE STIRRING SPEED CAUSING THE LACQUER TO BREAK UP AND FORM THE DESIRED PARTICLES AND THEREAFTER DISTILLING OFF THE SOLVENT.
Inventors
- 👤 E Stoetzer
- 👤 H Wassmuth
- 👤 A Abraham
Bibliographic Details
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