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A heat-activatable adhesive comprising an acrylic copolymer, which copolymer comprises a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol having a Tg of about 0.degree. C. or lower; a monomer consisting of an acrylate or methacrylate ester of an alcohol having

A heat-activatable adhesive comprising an acrylic copolymer, which copolymer comprises a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol having a Tg of about 0.degree. C. or lower; a monomer consisting of an acrylate or methacrylate ester of an alcohol having a Tg of at least about 5.degree. C.; and a functional monomer. Selected embodiments include a retroreflective article comprising a film having a substantially flat surface and a structured surface, the structured surface comprising a plurality of precisely shaped projections, a colored layer disposed on the structured surface and adhered thereto in a plurality of discrete locations, and a heat-activatable adhesive layer disposed on the colored layer.

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[ What is claimed is:] [15.] A heat-activatable adhesive composition comprising:(a) about 10 to 40 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol whose homopolymer has a T.sub.g of about 0.degree. C. or lower;(b) about 25 to

[ What is claimed is:] [15.] A heat-activatable adhesive composition comprising:(a) about 10 to 40 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of a non-tertiary alkyl alcohol whose homopolymer has a T.sub.g of about 0.degree. C. or lower;(b) about 25 to 60 wt-% based on monomer weight of a monomer consisting of an acrylate or methacrylate ester of an alcohol whose homopolymer has a T.sub.g of at least about 50.degree. C.;(c) about 10 to 40 wt-% based on monomer weight of a monomer having a polar functional group;(d) about 0.05 to 20 wt.-% of a crosslinking agent; and(e) about 0.05 to 0.3 wt-% of an initiator.