Patent ID: 7294653
Filing Date: 2007-11-13
Classification: B01D

Abstract:
1. A silicone antifoaming agent comprising a polyoxyalkylene-modified silicone is expressed by the following general formula where G G where Q is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an acyl group, an amino group, an alkylamino group, a dialkylamino group, or an —N═C═O group, r is a number from 2 to 6, and s is a number from 5 to 50; G where Q′ is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an acyl group, an amino group, an alkylamino group, a dialkylamino group, or an —N═C═O group, r′ is a number from 2 to 6, and s′ is a number from 1 to 30; x is a number from 10 to 200, y is a number from 0 to 60, z is a number from 0 to 30, and a is 0 or 1;