New organofunctional modified polysilanes are useful for the defoaming of liquid fuels, preferably diesel fuel

摘要

Organofunctional modified polysilanes are new. Organofunctional modified polysilanes (I) are of formula (1). R 1polyether group -(CH 2) x(OC 3H 6-) nOR; R : H or monovalent organic group; R 2phenyl group -Ru-(C6H4-zRvz)-ORw; Ru : divalent 1-18C optonally substituted hydrocarbon; Rv : hydroxyl, 1-6C alkyl or alkoxy; Rw : H or 1-6C alkyl, R 3polyether -(F)(O(C xH 2xO) rZ) g; Z : H or monovalent organic group; F : (g+1)valent, optionally branched hydrocarbon; a+b+c+d= 200-350 ; a/(b+c+d)=3-5; b= at lest 35 %; c= at least 10 %; d= 0-55%; k= 3-6; n= 28-35; g >=1; x= 2-4; r= greater than 1 [Image].