Internally incorporated phenolic resins in water-based (meth)acrylate adhesive compositions, pre-adhesive reaction mixtures, methods, and articles
Assignee3M Innovative Properties Company
InventorsIbrahim A. El Hedok, Mahfuza B. Ali, Elizabeth E. Johnson, Mark D. Purgett, Youhoon Kim, Prince P. Antony
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Abstract
Cationic or zwitterionic polymer adhesives, adhesive articles, aqueous polymerizable pre-adhesive reaction mixtures, and methods of preparation that include internal incorporation of a phenolic resin. The aqueous polymerizable pre-adhesive reaction mixtures include one or more cationic (meth)acrylate monomers, one or more low Tg nonionic monomer having a (meth)acryloyl group, optionally one or more anionic (meth)acrylate monomers, and one or more phenolic resins.
Claims15
An aqueous polymerizable pre-adhesive reaction mixture comprising:
- water;
- one or more cationic (meth)acrylate monomers;
- and
- a dispersed phase comprising one or more low Tg nonionic monomers and one or more phenolic resins, wherein the low Tg nonionic monomers have a (meth)acryloyl group and have a Tg of no greater than 20° C. when homopolymerized.
An adhesive composition comprising 70 wt-% to 98 wt-% of a cationic or zwitterionic polymer and 2 wt-% to 30 wt-% of a phenolic resin, based on the total weight of the cationic or zwitterionic polymer plus the phenolic resin.
Dependencies are inferred from the claim text.