Patent ID: 6200498
Filing Date: 2001-03-13
Classification: B01D,C11D

Abstract:
The process of producing pourable foam regulator granules containing a defoamer combination of a paraffin wax and a bisamide derived from diamines and carboxylic acids and inorganic, water-soluble or water-dispersible carrier salt, comprising pelletizing in a granulation mixer by intensively mixing 50 to 100 parts by weight of said inorganic carrier salt, optionally with up to 5 parts by weight of an anionic or nonionic cellulose ether, adding 1 to 10 parts by weight of an aqueous alkali metal silicate or polymeric polycarboxylate solution, and then adding 10 parts by weight of said defoamer combination heated to a temperature of 70.degree. C. to 180.degree. C.