ADDITIVE FOR CAUSTIC REMOVABLE HOT MELT ADHESIVES AND FORMULATIONS CONTAINING THE SAME
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United States of America Patent
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Issued Date -
Jun 30, 2016
app pub date -
Dec 22, 2015
filing date -
Dec 30, 2014
priority date (Note) -
Abandoned
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Abstract
An additive for imparting caustic removability to a hot melt adhesive includes a hydrocarbon copolymer containing one or more dicarboxylic acid moieties in at least partial ester form and a C5 hydrocarbon polymer comprising a polymeric backbone and, pendent thereon, one or more dicarboxylic acid moieties in at least partial ester form. The hydrocarbon copolymer and a C5 hydrocarbon polymer may have a weight average molecular weight less than 50,000, a flashpoint greater than or equal to 150° C., and may be soluble in a caustic solution having a pH of 8 or greater. A caustic removable hot melt adhesive composition may include the additive composition, a block copolymer, a tackifler, and/or a processing oil. The caustic removable hot melt adhesive composition may be applied to a label to adhere the label to the surface of an article, such as a recyclable bottle.
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