Aqueous, radiation curable printing lacquers and paints with improved properties

摘要

Water-based and radiation-cured printer's varnish and printing ink (PI), containing 0.001-1.5 wt% of polyoxyalkylene- polysiloxane copolymers of formula (I) R<3>Ä(OC3H6-)y(OC2H4-)xÜR<2>-Ä(R<1>)(CH3)SiOÜnÄ(CH3)(R<2>A)SiO-Üm(R<1>)(CH3)Si-R<2>-A (I), where A = Ä(C2H4O)x(C3H6O-)yÜR<3>; R<1> = 1-8C alkyl; R<2> = -(CH2)pO-; p = 2, 3 or 4; R<3> = H, 1-4C alkyl or (meth)acryloxy; n = 40-60; m = 0-3; the values of x and y are such that the polyoxyalkylene blocks have average mol. wts. of 300-800 g/mol and the mole ratio of x/y = 0.2-0.7. Preferably m = 0 or 1; R<3> = (meth)acryloxy,or H or Me.