Acrylic polymer-based adhesives
View Patent ↗Acrylic polymers comprising vinyl acetate monomers, hydroxyl functional monomers and low Tg alkyl acrylate monomers are useful in adhesive compositions that find use in skin contact applications.
1. A pressure sensitive adhesive composition comprising an acrylic polymer and a therapeutic agent, wherein the acrylic polymer comprises from about 50 to about 65 wt % of vinyl acetate, from about 10 to about 20 wt % of hydroxyethyl acrylate and from 10 to 40 wt % of 2-ethyl hexyl acrylate, wherein the acrylic polymer has a Tg at or greater than −20° C.
2. A pressure sensitive adhesive composition comprising an acrylic polymer and a therapeutic agent, wherein the acrylic polymer comprises about 50 wt % vinyl acetate monomers, about 10 wt % hydroxyethyl acrylate monomers and about 40 wt % of 2-ethyl hexyl acrylate monomers and, wherein the acrylic polymer has a Tg greater than about −20° C.
3. The adhesive of claim 1 which further comprises a plasticizer, a tackifier, a permeation enhancer or a combination thereof.
4. An article of manufacture comprising the adhesive of claim 1 .
5. The article of claim 4 which is to be adhesively adhered to the skin.
6. The article of claim 5 which is a tape, a plaster, or a bandage.
7. The adhesive of claim 1 which comprises from about 20 to 40 wt % of 2-ethyl hexyl acrylate.
8. The adhesive of claim 2 which further comprises a plasticizer, a tackifier, a permeation enhancer or a combination thereof.
9. An article of manufacture comprising the adhesive of claim 2 .
10. The article of claim 9 which is to be adhesively adhered to the skin.
11. The article of claim 10 which is a tape, a plaster, or a bandage.