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US 7,022,760 B2Granted
Crosslinkable binder dispersions
AssigneeBayer Aktiengesellschaft
InventorsMartin Melchiors, Rolf Gertzmann, Sandra Grosskopf, Raul Pires
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Abstract
The invention relates to aqueous crosslinkable binder dispersions comprising hydroxy-functional copolymers based on ethylene glycol monoallyl ether, to a process for preparing them and to the use of the dispersions in coating materials.
Claims8
An aqueous crosslinkable binder dispersion comprising an hydroxy- and acid-functional copolymer which is produced from a monomer mixture consisting of
- (a1) ethylene glycol monoallyl ether,
- (a2) one or more acid-functional polymerizable monomers,
- (a3) one or more polymerizable monomers containing cyclic groups and
- (a4) one or more further polymerizable monomers selected from the group consisting of (meth)acrylic esters having C1 to C18 hydrocarbon radicals in the alcohol moiety, vinyl esters vinyl monomers containing alkylene oxide units, monomers containing epoxy groups, monomers containing alkoxysilyl groups, monomers containing urea groups, monomers containing urethane groups, monomers containing amide groups, monomers containing nitrile groups, difunctional and higher functional (meth)acrylate monomers and difunctional and higher functional vinyl monomers,
- (a5) optionally, one or more OH- and/or NH-functional polymerizable monomers, and
- (a6) optionally, one or more polyester oligomers, provided that (a3), (a4), (a5) and (a6) are different from each other and are different from (a1) and (a2).
3 more elements
Dependencies are inferred from the claim text.