Water-soluble pressure sensitive adhesives
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United States of America Patent
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Mar 3, 2015
Grant Date -
Jun 6, 2013
app pub date -
Jan 30, 2013
filing date -
Apr 28, 2009
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Abstract
A water-soluble pressure sensitive adhesive comprises a homogeneous blend comprising (a) a polymer selected from the group consisting of N-vinyl caprolactam homopolymers, N-vinyl pyrrolidone copolymers, and mixtures thereof and (b) a non-volatile plasticizer comprising a monohydric or polyhydric alcohol having hydrophilic-lipophilic balance of about 2 to about 10. The N-vinyl pyrrolidone copolymers comprise about 60% or less by weight N-vinyl pyrrolidone.
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