Aqueous pressure-sensitive adhesive

Details Aqueous pressure-sensitive adhesive Aqueous pressure-sensitive adhesive

1989-03-10

1991-01-08

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524114, 524145, 524148, 524710, 524833, C08K 515

Patent

active

049836560

ABSTRACT:
An aqueous pressure-sensitive adhesive consisting essentially of (1) 100 parts by weight (in terms of solids content) of an aqueous copolymer emulsion obtained by emulsion-polymerizing a monomer mixture consisting of 70-99.9% by weight of at least one alkyl (meth)acrylate in which the alkyl group has 4-12 carbon atoms, 0.1-10% by weight of an .alpha.,.beta.-unsaturated carboxylic acid and 0-29.9% by weight of a monomer copolymerizable therewith, (2) 0.1-10 parts by weight of a phosphoric acid ester compound, and (3) a polyglycidyl compound in such an amount that the proportion of the epoxy group in the polyglycidly compound is 0.1-3 equivalents per equivalent of the carboxyl group in the aqueous copolymer. This aqueous pressure-sensitive adhesive has excellent balance in adhesion to adherend, peelability from adherend and anchoring to substrate; and the peelability from adherend is not varied depending upon the type of adherend and does not change with time or by heating.

REFERENCES:
patent: 4540739 (1985-09-01), Midgely
patent: 4600754 (1986-07-01), Winner

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