Three new acrylic latexes are inherently pressure-sensitive. Three water-based acrylic latexes—Hycar® 2600X146; Hycar 2600X161 ; Hycar 2600X187— are inherently pressure-sensitive polymers with excellent tack, color aging. They have a balance of cohesive and adhesive strength approaching that of solvent-based systems. In addition to the above characteristics, Hycar 2600X146 has higher initial tack and exceptional color aging. Hycar 2600X161 has excellent resistance to being underridden by water. In one test it retains its original adhesive strength after 24 hour water immersion. This feature is particularly important for floor tile adhesives. Hycar 2600X187, a lower-tack polymer, is designed for some floor tile adhesives and has FDA acceptances for food packaging applications. All three latexes can be used in non-slip rug backing—dirt can be washed off without reducing tack after drying. Unlike solvent-based systems, curing is not necessary. Production is further simplified since latexes involve no fire hazard, no fumes, and no air pollution. If the combination of good pressure-sensitive adhesive qualities, and easier production appeals to you, get the facts. Ask for Service Bulletin LSB-28. B.F.Goodrich Chemical Co., a division of The B.F.Goodrich Co., Dept. CN-32, 3135 Euclid Ave., BEGoodrich ...mA^Î^4€Î€/^mee^nee Cleveland, Ohio 44115. 38
C&EN JULY 19, 1971
