Filled polyisobutene-based pressure sensitive adhesives and methods for their preparation and use

Filled polyisobutene-based PSAs with crosslinked structures, using surface-treated fillers and specific crosslinking agents, address the limitations of existing PSAs by enhancing static shear strength, creep resistance, and adhesion, while providing effective water vapor and electrical conductivity.

WO2023200801A9PCT designated stage expired Publication Date: 2024-12-26ADHESIVES RESEARCH INC
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Patent Information

Application Number
PCT/US2023/018196
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-04-12
Filing Date
2023-04-11
Publication Date
2024-12-26

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Abstract

Filled polyisobutene-based (PIB) pressure sensitive adhesives (PSA) comprising a crosslinked structure therein. Compositions for preparing the PSAs comprise a PIB resin, a surface-treated and / or non-surface treated filler, wherein the surface treatment comprises a silane, a silazane or a combination thereof, and a SiH, SH or isocyanate functional crosslinking agent. Related embodiments include methods for preparing and using the filled PSAs, e.g., barrier adhesives and as a component of an adhesive tape.
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