Wet-stick adhesives, articles, and methods
Assignee3M Innovative Properties Company
InventorsDonald H. Lucast, Dong-Wei Zhu
Life of this patent
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Abstract
A wet-stick pressure-sensitive adhesive is provided wherein the pressure-sensitive adhesive comprises: at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer, when homopolymerized, has a Tg of less than about 10° C.; at least one copolymerized hydrophilic acidic comonomer; and at least one nonreactive copolymer comprising at least two copolymerized alkylene oxides, at least one of which is hydrophobic and at least one of which is hydrophilic.
Claims18
An article comprising a backing and a wet-stick pressure-sensitive adhesive comprising:
- (a) at least one copolymer comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer when homopolymerized has a Tg of less than about 10° C.;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer which is present, and is present in an amount of no greater than about 35 wt-%;
- and
- (b) at least one nonreactive poly(alkylene oxide) copolymer that is compatible with the copolymerized monomers, wherein the nonreactive poly(alkylene oxide) copolymer comprises at least two copolymerized alkylene oxides, at least one of which is hydrophilic and at least one of which is hydrophobic, wherein the HLB value of the nonreactive poly(alkylene oxide) copolymer is 5 to about 15, and further wherein the article comprising a backing and a wet-stick pressure-sensitive adhesive adheres to wet skin.
A method of using an adhesive article, the method comprising:
- providing an adhesive article comprising a backing and a wet-stick pressure-sensitive adhesive layer disposed thereon, wherein the wet-stick pressure-sensitive adhesive comprises:
- (a) at least one copolymer comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer when homopolymerized has a Tg of less than about 10° C.;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer which is present, and is present in an amount of no greater than about 35 wt-%;
- and
- (b) at least one nonreactive poly(alkylene oxide) copolymer that is compatible with the copolymerized monomers, wherein the nonreactive poly(alkylene oxide) copolymer comprises at least two copolymerized alkylene oxides, at least one of which is hydrophilic and at least one of which is hydrophobic, wherein the HLB value of the nonreactive poly(alkylene oxide) copolymer is 5 to about 15;
- and
- adhering the adhesive article to skin.
Dependencies are inferred from the claim text.