FIELD: chemistry.
SUBSTANCE: invention relates to a modified polyacrylate containing fluorinated oxetane polymer links functionalised with unsaturated dicarboxylic acid, and siloxane links. The invention describes an antifrictional and smoothing additive, characterised by that it contains a copolymer which can be obtained via copolymerisation of A) at least one link of a fluorinated oxetane polymer, functionalised with unsaturated dicarboxylic acid of formula I, in which R1 denotes a link obtained from a fluorinated oxetane prepolymer having structure II, in which R denotes C1-C6 alkyl, Rf denotes linear or branched perforated alkyl or isoalkyl groups containing 1-20 C atoms, n ranges from 1 to 3, x ranges from 2 to 20; Z denotes a hydrogen atom or CF3CH2-, or HO-CO-CR3=CR4-CO-, or R1-O-CO-CR3=CR4-CO-, where R1 assumes values given above; R2 denotes a hydrogen atom or R1; R3 and R4 independently denote a hydrogen atom or C1-C6 alkyl, or phenyl; B) at least one terminal reactive polysiloxane link; C) at least one alkyl(meth)acrylate link or cycloalkyl(meth)acrylate link and/or (meth)acrylic acid and/or other links obtained from vinyl compounds which can form radicals. The invention also describes an antifrictional and smoothing dispersion, coating material, printing ink or plastic material containing said additive.
EFFECT: additive having improved surface properties, such as high anti-mottling capacity, low coefficient of friction, good adhesion, and having good antifoaming properties.
8 cl, 5 tbl, 5 ex
