| 摘要 |
<p>PURPOSE:To provide water ink which can retain lowly foaming properties even under high temperature or high shearing conditions, containing a water ink compsn., an oxyalkylene group-contg. organopolysiloxane, a dimethylpolysiloxane, silica filler and a surfactant. CONSTITUTION:A water ink compsn. consists of 100pts.wt. water ink compsn. (A) and 0.1-10pts.wt. silicone antifoaming agent compsn. (B) consisting of 100pts.wt. oxyalkylene group-contg. organopolysiloxane (i) of formula I [wherein Y is a 3-30C alkyl, etc.; G is oxyalkylene of formula II (wherein R<1> is a 2- 10C bivalent hydrocarbon group; A is H, etc.; Q is a 1-5C oxyalkylene; p is 1- 100); a, b are each 0, 1, 2; c is 1, 2, 3; l is 20-200; m+2a=2-100; n+2b=2- 50], 2-200pts.wt. dimethylpolysiloxane (ii) having a viscosity of 100-1,000,000 at 25 deg.C, 0.1-40pts.wt. silica filler (iii) and 0.1-40pts.wt. surfactant (iv).</p> |
