Carboxylated acrylate styrene butadiene adhesives
AssigneePolysar Limited
InventorIvan S. Lee
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Abstract
An adhesive composition having improved properties for pressure sensitive adhesive applications has been developed comprising a latex of a polymer formed by polymerizing 40-10 percent vinyl or vinylidene monoaromatic monomer, 45-70 percent C.sub.4-6 cojugated diene, 1-5 percent unsaturated acid, and 5-30 percent C.sub.1-8 alkyl ester of acrylic or methacrylic acid. The adhesive preferably also contains a tackifier resin. The adhesive is useful on a number of applications including the manufacture of labels and tapes.
Claims15
A pressure sensitive adhesive composition comprising the latex of a polymer formed by polymerizing:
- (a) from about 40 to about 10 weight percent of a vinyl or vinylidene monoaromatic monomer which may be unsubstituted or substituted by a C.sub.1-4 alkyl radical or a chlorine or bromine atom;
- (b) from about 45 to about 70 weight percent of a C.sub.4-6 conjugated diene;
- (c) from about 1 to about 5 weight percent of a C.sub.3-6 ethylenically unsaturated mono- or di-carboxylic acid or a mixture thereof;
- and
- (d) from about 5 to about 30 weight percent of a C.sub.1-8 alkyl ester of acrylic or methacrylic acid;
- wherein the total of (a), (b), (c) and (d) is 100 weight percent.
A substrate coated with from about 15 to about 60 g/m.sup.2 of a pressure sensitive adhesive composition comprising a polymer formed by polymerizing:
- (a) from about 40 to about 10 weight percent of a vinyl or vinylidene monoaromatic monomer which may be unsubstituted or substituted by a C.sub.1-4 alkyl radical or a chlorine or bromine atom;
- (b) from about 45 to about 70 weight percent of a C.sub.4-6 conjugated diene;
- (c) from about 1 to about 5 weight percent of a C.sub.3-6 ethylenically unsaturated mono- or di-carboxylic acid or a mixture thereof;
- and
- (d) from about 5 to about 30 weight percent of a C.sub.1-8 alkyl ester of acrylic or methacrylic acid;
- wherein the total of (a), (b), (c) and (d) is 100 weight percent.
Dependencies are inferred from the claim text.