| 摘要 |
A foam control agent for emulsifiable concentrates and its use therein is disclosed wherein the agent comprises a soluble organosilicone of the formula: (R2(R1)2SiO1/2)e(SiO4/2)f(SiO3/2R1)g(SiO2/2)(R1)2)x(SiO2/2R1Z)y wherein: e=2f+g+2; f=0 to 2; g=0 to 2; x=30 to 150; y=0 to 30; where, when y>0, x/y=4 to 18 and x+y>=30, and when y=0, the ratio x/e is in the range of from about 20/1 to about 10/1; R1=alkyl of 1 to 18 carbon atoms; R2=R1 or Z, provided that when y=0, R2=Z; Z=R3OBnG; R3 is a divalent bridging group of two to four carbons; B is an alkylene oxide group containing two to four carbon atoms, wherein less than ten mole percent of the alkylene oxide functionality is ethylene oxide; n=8 to 30; and G=hydrogen, a hydrocarbon radical of 1 to 18 carbon atoms, or acetyl. |
