UV-curable binders and their use for production of high gloss coatings
First Claim
1. A binder, which can be cured by free-radical polymerization initiated by UV light, and comprisesa) 10 to 90 parts by wt. of a polymer which contains, in chemically bound form, both ethylenically unsaturated groups and the reaction product of a resin containing abietic acid with not more than 50% of the OH groups of a polyfunctional alcohol having a molecular weight of less than 500, b) 10 to 90 parts by wt. of one or more mono-, di- or oligoesters of (meth)acrylic acid having a molecular weight of less than 800 and c) optionally 0.1 to 10 parts by wt. of a photoinitiator component for the free-radical polymerization wherein the weights of a) and b) add up to 100.
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Abstract
The present invention relates to binders, which can be cured by free-radical polymerization initiated by UV light, and contain
a) 10 to 90 parts by wt. of a polymer which contains, in chemically bound form, both ethylenically unsaturated groups and the reaction product of a resin containing abietic acid with not more than 50% of the OH groups of a polyfunctional alcohol having a molecular weight of less than 500,
b) 10 to 90 parts by wt. of one or more mono- di-or oligoesters of (meth)acrylic acid having a molecular weight of less than 800 and
c) optionally 0.1 to 10 parts by wt. of a photoinitiator component for the free-radical polymerization
wherein the weights of a) and b) add up to 100.
The present invention also relates to coating compositions containing these binders which are suitable for the production high-gloss coatings.
48 Citations
9 Claims
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1. A binder, which can be cured by free-radical polymerization initiated by UV light, and comprises
a) 10 to 90 parts by wt. of a polymer which contains, in chemically bound form, both ethylenically unsaturated groups and the reaction product of a resin containing abietic acid with not more than 50% of the OH groups of a polyfunctional alcohol having a molecular weight of less than 500, b) 10 to 90 parts by wt. of one or more mono-, di- or oligoesters of (meth)acrylic acid having a molecular weight of less than 800 and c) optionally 0.1 to 10 parts by wt. of a photoinitiator component for the free-radical polymerization wherein the weights of a) and b) add up to 100.
Specification
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- Resources
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Current AssigneeBayer AG
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Original AssigneeBayer AG
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InventorsWeikard, Jan, Fischer, Wolfgang, Müller, Manfred
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Primary Examiner(s)Berman, Susan W.
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Application NumberUS09/480,317Time in Patent Office687 DaysField of Search522/104, 522/107, 522/90, 522/96, 522/97, 522/173, 522/178, 522/179, 522/181US Class Current522/107CPC Class CodesC08L 2666/34 Oxygen-containing compounds...C09D 167/08 Polyesters modified with hi...
