Composite adhesives
Assignee3M Innovative Properties Company
InventorsMichael J. Maher, Adam O. Moughton, Lucas J. Jones
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Abstract
Described herein is an adhesive composite composition. The composition comprises: a plurality of polymeric microspheres dispersed within a (meth)acrylate-based matrix, wherein the polymeric microspheres are derived from 20-100 wt % of a (meth)acrylate monomer having a Tg above room temperature; and the (meth)acrylate-based matrix is derived from a C1 to C20 (meth)acrylate ester monomer and a (meth)acrylate macromer. In some embodiments, these composite adhesives show good impact resistance and good shear.
Claims35
A polymerizable composition comprising:
- (i) a polymerizable matrix comprising:
- (a) a (meth)acrylate macromer, wherein the (meth)acrylate macromer comprises a poly(ethylene oxide) group, a poly(propylene oxide) group, a poly(ethylene oxide-co-propylene oxide), a poly(tetrahydrofuran) group, or combinations thereof;
- (b) one or more of a C1 to C20 (meth)acrylate ester monomer;
- and
- (c) a cross-linking agent;
- and
- (ii) a plurality of polymeric microspheres, wherein the polymeric microspheres are derived from 20 to 100 wt % of a (meth)acrylate monomer having a Tg above room temperature, wherein the plurality of polymeric microspheres is dispersed in a matrix and
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A method of making an adhesive article comprising:
- (i) obtaining a polymerizable matrix comprising:
- (a) a (meth)acrylate macromer, wherein the (meth)acrylate macromer comprises a poly(ethylene oxide) group, a poly(propylene oxide) group, a poly(ethylene oxide-co-propylene oxide), a poly(tetrahydrofuran) group, or combinations thereof;
- (b) one or more of a C1 to C20 (meth)acrylate ester monomer;
- and
- (c) a cross-linking agent;
- and
- (ii) adding a plurality of polymeric microspheres to the polymerizable matrix to form a composition, wherein the polymeric microspheres are derived from 20 to 100 wt % of (meth)acrylate monomer having a Tg above room temperature.
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Dependencies are inferred from the claim text.