Radiation curable, ethylenically unsaturated thixotropic agent and method of preparation
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United States of America Patent
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May 20, 1980
Issued Date -
N/A
app pub date -
Dec 21, 1978
filing date -
Sep 17, 1976
priority date (Note) -
Expired
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Abstract
This invention relates to an ethylenically unsaturated reactive thixotropic agent for use in radiation curable compositions, e.g., overprint varnishes, formed by reacting a hydroxyl-containing fatty acid ester with an ethylenically unsaturated isocyanate. The agent not only performs its thixotropic function in the uncured state but also forms part of the cured product on exposure to radiation, e.g., UV radiation due to its substantially similar reactivity.
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