C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 283/00 (2006.01) C08G 18/32 (2006.01) C08G 18/81 (2006.01) C08L 51/08 (2006.01) C09D 151/08 (2006.01)
Patent
CA 2113964
ABSTRACT OF THE DISCLOSURE A water-dispersible hybrid polymer comprises an ethylenically unsaturated polyurethane (core) onto which an addition polymer chain (shell) has been provided by polymerization, with the unsaturation of the polyurethane being achieved by the incorporation therein of dimethyl-m-isopropenyl benzyl isocyanate, and the acid number of the shell polymer being in the range of 30 to 120 (mg KOH/g). Aqueous dispersions of these hybrid polymers are pre-eminently suitable for use in aqueous coating compositions of the so-called clear coat type, particularly when stringent demands are imposed with regard to the acid resistance of the topcoats applied using these compositions.
Buter Roelof
Roelofs Andreas H. J.
Akzo N.v.
Buter Roelof
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Roelofs Andreas H. J.
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