A pavement marking article that has an
adhesive composition for adhering the article to a pavement substrate, where the
adhesive composition includes a
reaction product of an
acrylic acid ester of a monohydric
alcohol whose homopolymer has a Tg less than 0° C., a non-polar ethylenically
unsaturated monomer, and 0-10 parts by weight of a polar ethylenically
unsaturated monomer. Preferably the amount of the
acrylic acid ester is about 60-90 parts by weight, and the amount of the non-polar ethylenically
unsaturated monomer is about 10-40 parts by weight.Also, a
raised pavement marker that comprises:(a) a pavement marker body having upper and lower surfaces and an apparent
flexural modulus of at least about 50,000 psi and(b) a
pressure sensitive adhesive layer disposed upon the lower surface of the marker, wherein the adhesive has:(i) a transition region that begins at a frequency of about 10,000 radians / s or more and extends to a frequency of about 100 radians / s or less at about 25° C.; and(ii) a minimum
shear modulus of about 1×105 Pa at an
impact frequency of about 100 radians / s at 25° C.; and(iii) a
shear modulus value of about 2×104 to 2×105 Pa at a frequency of 1 rad / sec at 25° C.Raised pavement markers that use a
pressure sensitive adhesive meeting parameters (i)-(iii) can demonstrate good adhesion to roadways and are capable of withstanding repeated impacts from motor vehicle tires.