Abstract: A process for producing pourable foam regulator granules containing a defoamer combination of a paraffin wax and a bisamide derived from diamines and carboxylic acids and an inorganic, water-soluble or water-dispersible carrier salt by pelletizing in a granulation mixer with intensive mixing 50 to 100 parts by weight of the 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 the defoamer combination heated to a temperature of 70° C. to 180° C.
Type:
Grant
Filed:
April 7, 1999
Date of Patent:
March 13, 2001
Assignee:
Henkel Kommanditgesellschaft auf Aktien
Inventors:
Rene-Andres Artiga Gonzalez, Maria Liphard, Ingrid Kraus, Stefan Hammelstein