Use, in paper-coating colors, of amphiphilic and non-water-soluble (meth) acrylic polymers

摘要

Use, in a paper coating color, as a BrookfieldTM viscosity increasing agent, which reduces the ACAV viscosity, and as a water retention agent, of a formed non-water soluble polymer, expressed in% by weight of each of the monomers, by: a) from 30% to 60% of at least one hydroxy- and / or methoxy-polyalkylene glycol monomer, with the formula R- (EO) m- (PO) n-R ' , in which: - myn designate whole numbers less than or equal to 150, at least one of which is not zero, - EO and PO respectively designate ethylene oxide and propylene oxide, - R designates the methacrylate or methacrylurethane group, - R 'designates a hydroxy or methoxy group, b) from 20% to 60% of at least one hydrophobic monomer chosen from styrene and (meth) acrylic esters having 1 to 4 carbon atoms, c) of 0, 1 to 10% of at least one monomer, which is acrylic and / or methacrylic acid, d) from 0 to 5% of an associative monomer, whose formula is R- (EO) m- (PO) n -R ', in which: - myn designates whole numbers less than or equal to 150, at least one of which is not zero, - EO and PO respectively designate ethylene oxide and propylene oxide, - R designates the methacrylate group or methacrylurethane, - R 'means an alkyl or aryl or alkylaryl group having 8 to 32 linear or branched carbon atoms, e) from 0 to 5% by weight of a monomer having two ethylene unsaturations, the sum being of% of a), b), c), d) and e) equal to 100%.