Compositions and Methods for Modified Ester-Curatives and Reduction of Formaldehyde Emission and Odor in Ester-Cured Phenolic Binder Systems
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United States of America Patent
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Jun 6, 2019
app pub date -
Feb 12, 2019
filing date -
Dec 18, 2015
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Abstract
This invention relates to compositions and methods for reduction of formaldehyde odor and emission during the production and curing of cores and molds, particularly those cores and molds of the foundry industry which comprise ester curable phenolic binders. More specifically, included herein is an ester-curative comprising an ester and resorcinol which, when provided in a composition with a resin and an aggregate, effectively scavenges unreacted formaldehyde thereby reducing emission and odor of the same from the composition.
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