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US 6,441,092 B1Granted
Wet-stick adhesives
Assignee3M Innovative Properties Company
InventorMelinda B. Gieselman
Life of this patent
Estimating the term…
Abstract
A wet-skin adhesive includes a pressure-sensitive adhesive component that includes at least one monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average and at least one monoethylenically unsaturated reinforcing monomer; and a film-forming component that includes at least one monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average and at least one hydrophilic acidic monomer, wherein the wet-stick pressure-sensitive adhesive has an initial wet skin adhesion of at least about 0.8 N/dm. Advantageously, the wet-stick adhesive has an initial wet skin adhesion that is at least about 65% of an initial dry skin adhesion.
Claims21
A wet-stick pressure-sensitive adhesive comprising:
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average;
- and
- (ii) at least one copolymerized monoethylenically unsaturated reinforcing monomer;
- and
- (b) a film-forming component comprising:
- (i) at least about 50 wt-%, based on the total weight of copolymerizable monomers of the film-forming component, of at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer;
- wherein the wet-stick pressure-sensitive adhesive adheres to wet skin.
7 more elements
An article comprising a backing and a wet-stick pressure-sensitive adhesive comprising:
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average;
- and
- (ii) at least one copolymerized monoethylenically unsaturated reinforcing monomer, and
- (b) a film-forming component comprising:
- (i) at least about 50 wt-%, based on the total weight of copolymerizable monomers of the film-forming component, of at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer;
- wherein the wet-stick pressure-sensitive adhesive adheres to wet skin.
6 more elements
A method of making a wet-stick pressure-sensitive adhesive, the method comprising combining under conditions for polymerization;
- (i) at least one monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average;
- (ii) at least one monoethylenically unsaturated reinforcing monomer;
- (iii) at least about 50 wt-%, based on the total weight of (iii) and (iv), of at least one monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average;
- and
- (iv) at least one hydrophilic acidic monomer, wherein at least (i) and (ii) or (iii) and (iv) are polymerized prior to combining (iii) and (iv) or (i) and (ii), respectively;
- wherein the wet-stick pressure-sensitive adhesive adheres to wet skin.
3 more elements
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 on at least one surface of the backing, wherein the wet-stick pressure-sensitive adhesive comprises:
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average;
- and
- (ii) at least one polymerized monoethylenically unsaturated reinforcing monomer;
- and
- (b) a film-forming component comprising:
- (i) at least about 50 wt-%, based on the total weight of copolymerizable monomers of the film-forming component, of at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer;
- and
- adhering the adhesive article to wet skin.
9 more elements
A wet-stick pressure-sensitive adhesive comprising:
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average;
- and
- (ii) at least one copolymerized monoethylenically unsaturated reinforcing monomer, and
- (b) a film-forming component comprising:
- (i) at least about 50 wt-%, based on the total weight of copolymerizable monomers of the film-forming component, of at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer;
- wherein the wet-stick pressure-sensitive adhesive adheres to wet skin with an initial wet skin adhesion of at least about 0.8 N/dm, which is at least about 65% of an initial dry skin adhesion.
6 more elements
A wet-stick pressure-sensitive adhesive comprising:
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average that is present in an amount of about 85 wt-% to about 99 wt-%, based on the total weight of the copolymerizable monomers of the pressure-sensitive adhesive component;
- and
- (ii) at least one copolymerized monoethylenically unsaturated reinforcing monomer that is present in an amount of about 1 wt-% to about 15 wt-%, based on the total weight of the copolymerizable monomers of the pressure-sensitive adhesive component;
- and
- (b) a film-forming component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average that is present in an amount of about 50 wt-% to about 99 wt-%, based on the total weight of the copolymerizable monomers of the film-forming component;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer that is present in an amount of about 1 wt-% to about 50 wt-%, based on the total weight of the copolymerizable monomers of the film-forming component;
- wherein the wet-stick pressure-sensitive adhesive adheres to wet skin.
7 more elements
An article comprising a backing and a wet-stick pressure-sensitive adhesive
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average;
- and
- (ii) at least one copolymerized monoethylenically unsaturated reinforcing monomer;
- and
- (b) a film-forming component comprising:
- (i) at least about 50 wt-%, based on the total weight of copolymerizable monomers of the film-forming component, of at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer;
- wherein the article comprises a wet-stick pressure-sensitive adhesive that adheres to wet skin with an initial wet skin adhesion of at least about 0.8 N/dm, which is at least about 65% of an initial dry skin adhesion.
7 more elements
An article comprising a backing and a wet-stick pressure-sensitive adhesive comprising:
- (a) a pressure-sensitive adhesive component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average that is present in an amount of about 85 wt-% to about 99 wt-%, based on the total weight of the copolymerizable monomers of the pressure-sensitive adhesive component;
- and p2 (ii) at least one compolymerized monoethylenically unsaturated reinforcing monomer that is present in an amount of about 1 wt-% to about 15 wt-% based on the total weight of the copolymerizable monomers of the pressure-sensitive adhesive component;
- and
- (b) a film-forming component comprising:
- (i) at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average that is present in an amount of about 50 wt-% to about 99 wt-%, based on the total weight of the copolymerizable monomers of the film-forming component;
- and
- (ii) at least one copolymerized hydrophilic acidic monomer that is present in an amount of about 1 wt-% to about 50 wt-%, based on the total weight of the copolymerizable monomers of the film-forming component;
- wherein the article comprises a wet-stick pressure-sensitive adhesive that adheres to wet skin.
6 more elements
Dependencies are inferred from the claim text.