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US 6,787,627 B2Granted
Aqueous coating compositions based on epoxybutene polyethers
AssigneeBayer Aktiengesellschaft
InventorsMartin Melchiors, Jan Weikard, Rolf Gertzmann, Helmut Greiving, Ulrich Freudenberg
Life of this patent
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Abstract
The invention relates to water-dilutable polyurethanes containing structural units derived from 3,4-epoxy-1-butene and also to aqueous dispersions comprising these polyurethanes, to a process for preparing them and to use as aqueous oxidatively drying and/or UV-crosslinking coating compositions.
Claims25
Water-dilutable polymer containing urethane groups and containing ionic and/or potentially ionic groups, characterized in that the polymer comprises the repeating units (A1) of the formula (I) and/or (A2) of the formula (II)
Dependencies are inferred from the claim text.