Non-polarized medical pressure-sensitive adhesive

A crosslinked (meth)acrylate copolymer with a hydrogenated hydrocarbon tackifier forms a hydrocarbon-enriched adhesive layer that addresses adhesion, durability, and moisture issues in medical adhesives, ensuring long-term skin adhesion without damage and residue.

JP7864635B2Active Publication Date: 2026-05-25SOLVENTUM INTELLECTUAL PROPERTIES CO
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Patent Information

Authority / Receiving Office
JP Β· JP
Patent Type
Patents
Current Assignee / Owner
SOLVENTUM INTELLECTUAL PROPERTIES CO
Filing Date
2021-03-18
Publication Date
2026-05-25

AI Technical Summary

Technical Problem

Existing medical adhesives face challenges in achieving high adhesion to skin without causing damage, maintaining long-term durability, and preventing moisture buildup, while also being removable without residue, due to issues with cohesive force, moisture vapor transmission rate (MVTR), and compatibility with tackifiers.

Method used

A crosslinked (meth)acrylate copolymer without polar groups, combined with a hydrogenated hydrocarbon tackifier, is used to form a hot-melt adhesive composition that is photocrosslinked, providing a hydrocarbon-enriched, hydrophobic adhesive layer with improved long-term durability and compatibility.

Benefits of technology

The adhesive composition achieves long-term adhesion to mammalian skin for at least 10 days, remains removable without skin damage, and maintains low moisture buildup, addressing the challenges of skin integrity and patient safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The crosslinked (meth)acrylate-based pressure-sensitive adhesive is capable of adhering to mammalian skin for at least 10 days. The crosslinked adhesive composition comprises a crosslinked (meth)acrylate-based copolymer without polar groups and a hydrogenated hydrocarbon tackifying resin. The crosslinked adhesive composition is prepared by photocrosslinking a hot-melt processable blend of the (meth)acrylate copolymer and the hydrogenated hydrocarbon tackifying resin. The (meth)acrylate copolymer is the reaction product of an alkyl (meth)acrylate monomer, having an alkyl group containing 4 to 22 carbon atoms and without polar groups, with a copolymerizable photocrosslinker.
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