| 摘要 |
<p>Water-insoluble polymerisate (I) (obtained by radical polymerization of at least two ethylenic unsaturated monomers A in presence of at least a polyalkyleneoxide containing polysiloxane B, where up to 50% parts by weight of unsaturated monomer A in the presence of at least 50% parts by weight of the polysiloxane B are polymerized) is new. Independent claims are also included for: (1) polymerisate comprising a polymer component B, which is polyoxyalkylene polysiloxane copolymer of formula (V) or siliconpolyether copolymer of formula (VII) (where the siloxane chain (m) contains 20-30 of non-modified siloxane units); and (2) use of grafted polyoxyalkylene polysiloxane copolymers as antifoaming agents and exhauster for non-aqueous systems based on mineral oils or synthesis oils. R-f : R1>, R2> or R3> (where at least one of R-f is R2>); R1>1-16C alkyl or aryl; R2>, R3>polyether of formula ((F)q(O(C2H4-dRdO)m(CxH2xO)rZ)w); d : 1-3; m : greater than 1; x : 2-10; r : greater than 1; F : optionally branched hydrocarbon; R : H or 1-18C hydrocarbon; Z : H, organic residue, alkyl, akyl- or arylester; b : 0-8; and R4>allylalcohol or alkyl-activating polyether which reacts with 1-10 of ethyleneoxide molecule and 1-25 of propyleneoxide molecule. Where a is 1-100 (when b is 6-8), 1-200 (when b is 3-6) or 1-300 (when b is 0-3). [Image] [Image].</p> |
