(Meth)acrylic esters containing urethane groups, their preparation, radiation-curable coating compositions and a process for preparing these coating compositions
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United States of America Patent
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Nov 20, 2001
Grant Date -
N/A
app pub date -
Mar 30, 2000
filing date -
Apr 1, 1999
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for preparing nondispersing (meth)acrylic esters containing urethane groups, comprising a) reacting at least one hydroxyl-containing compound with (meth)acrylic acid in a solvent, to form an ester; b) removing the solvent and optionally a part of unreacted (meth) acrylic acid; c) reacting the mixture resulting from stage a) or b) with at least one epoxy-functional compound in an amount corresponding to the acid number of the mixture; and d) reacting the mixture resulting from stage c) with at least one compound containing isocyanate groups, and such esters obtainable in this way, and radiation-curable coating compositions comprising said esters, and a process for preparing these coating compositions.
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