DYNAMIC COVALENT ADHESIVES: MOISTURE-ACTIVATED INSTANTANEOUS ADHESION
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United States of America
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Issued Date -
Jan 30, 2025
app pub date -
Nov 29, 2022
filing date -
Nov 29, 2022
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Abstract
A reversibly adhesive film, comprising: at least two hydroxyl-bearing polymer chains being crosslinked by one or more boronic ester bonds, the film having accessible hydroxyl groups at a surface of the film. An reversible adhesive, comprising: a first film layer, the first film layer comprising at least two first hydroxyl-bearing polymer chains crosslinked by first crosslinks that comprise one or more boronic ester bonds; and a second film layer, the first second layer comprising at least two second hydroxyl-bearing polymer chains crosslinked by second crosslinks that comprise one or more boronic ester bonds, wherein (1) the first hydroxyl-bearing polymer chains differ from the second hydroxyl-bearing polymer chains in one or more of composition and concentration, or (2) the boronic ester bonds are present in the first film layer at a different density than the boronic ester bonds in the second film layer, or (3) both (1) and (2).
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