Hot melt adhesives for bonding to sensitive areas of the human body

A hot melt pressure sensitive adhesive comprising 1 to 20 parts of an A-B-A rubber triblock or radial block copolymer having a viscosity at 25.degree. C. of above 1,000 cP in toluene at a concentration of 20% by weight wherein the polymer blocks A are non-elastomeric polymer blocks which, as homopolymers have glass transition temperatures above 20.degree. C., while the elastomeric polymer blocks B are isoprene, or butadiene which may be partially or substantial hydrogenated or mixtures thereof;

• 0 to 20 parts A-B diblock rubber having a viscosity at 25.degree. C. of above 1,000 cP in toluene at a concentration of 20% by weight;
• 0 to 10 parts by weight of another compatible high molecular weight polymer having a viscosity at 25.degree. C. of above 1,000 cP in toluene at a concentration of 20% by weight;
• 0 to 30 parts by weight end block resin;
• 60 to 95 parts by weight oil or other liquid midblock diluent;
• 0 to 40 parts by weight of a solid tackifier which is compatible with the polymer midblock;
• 0 to 5 parts wax, and 0 to 3 parts by weight anti-oxidant;
• the parts to total 100 parts by weight;
• the adhesive also characterized by a midblock Tg less than -10.degree. C., a G' less than 15.times.10.sup.4 dynes/cm.sup.2 at 10 rad/s (25.degree. C.), a G" of 1 to 6.times.10.sup.4 dynes/cm.sup.2 (25.degree. C.) and a tensile strength greater than 10 psi and requiring no subsequent curing operation after cooling.