Radiation curable compositions comprising an unsaturated polyester and a compound having two to six-propenyl ether groups
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United States of America Patent
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Feb 29, 2000
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N/A
app pub date -
Aug 13, 1997
filing date -
Aug 13, 1997
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Expired
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Abstract
Composition suitable for free radical, radiation curable coating comprising at least one polyester having unsaturated backbone and at least one compound having two to six propenyl ether groups, and optionally, a free radical photoinitiator. The equivalent ratio of propenyl ether groups to maleimide, maleate and/or fumarate groups in the polyester is preferably about 5:1 to about 1:5. The process for curing the composition includes exposing it to ionizing radiation and/or ultraviolet light. The resultant cured coatings and coated articles are similar in performance to their vinyl ether analogues, but the propenyl ethers are easier to prepare than the vinyl ether analogues.
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