TACKIFIED ACRYLIC ADHESIVES

摘要

The invention provides an adhesive comprising (A) the polymerization reaction product of starting materials comprising: (a) 25 to 100 parts by weight of a polymerizable component comprising at least one acrylic or methacrylic ester of a non-tertiary alkyl alcohol in which the alkyl group contains 4 to 20 carbon atoms; and (b) 0 to 75 parts by weight of a polymerizable component comprising at least one reinforcing monomer, copolymerizable with component (a), the sum of (a) and (b) amounting to 100 parts by weight; and (B) 1 to 75 parts by weight, per 100 parts by weight of the sum of components (a) and (b), of a tackifier, wherein component (B) may or may not be present in said starting materials; said tackifier comprising a water white, hydrogenated resin produced from a hydrocarbon feedstock, said tackifier having: (i) a retained aromaticity on a weight percent of monomers in the feedstock basis of greater than 50 percent; (ii) a softening point of 65 to 120 ~C; (iii) an Mz of less than 1800; and (iv) substantially no molecular weight fractions above 7000.