Wet and dry stick adhesive, articles, and methods
Assignee3M Innovative Properties Company
InventorsMarie A. Boulos, Dominic L. Fedie
Life of this patent
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Abstract
An adhesive article is disclosed. The adhesive article includes a reinforced tape and a pressure sensitive layer disposed on the reinforced tape. The pressure sensitive layer includes an adhesive blend of 25 to 75 parts by weight of a first hydrophilic pressure sensitive adhesive having a first polyacrylate, 60 to 24 parts by weight of a non-hydrophobic pressure sensitive adhesive having a second polyacrylate, and 15 to 1 parts by weight of a tackifying agent. The adhesive blend includes a cross linking agent. The non-hydrophobic pressure sensitive adhesive is miscible in the hydrophilic pressure sensitive adhesive and the second polyacrylate is different from the first polyacrylate. Methods of making and using adhesive articles are also disclosed.
Claims10
An adhesive composition comprising an adhesive blend of:
- a first hydrophilic pressure sensitive adhesive comprising a polymerization product of:
- (a) 15 to 85 parts by weight of a first (meth)acrylate ester monomer wherein the (meth)acrylate ester monomer, when polymerized, has a glass transition temperature (Tg) of less than about 10 degrees Celsius;
- (b) 85 to 15 parts by weight of a first hydrophilic acidic comonomer;
- and
- (c) at least 10 parts based on 100 parts of the sum of components (a)+(b) of a plasticizing agent comprising polyethylene propylene glycol butyl ether;
- a second pressure sensitive adhesive comprising a polymerization product of:
- (a) 75 to 99 parts by weight of a second (meth)acrylate ester monomer;
- and
- (b) 25 to 1 parts by weight of a second hydrophilic acidic comonomer;
- wherein, the second pressure sensitive adhesive is miscible in the first hydrophilic pressure sensitive adhesive;
- and
- a tackifying agent.
Dependencies are inferred from the claim text.