Silicone pressure-sensitive adhesive compositions

A curable pressure sensitive adhesive (PSA) composition having improved quick stick properties consisting essentially of:

• (A) a silicone adhesive composition consisting essentially of:
• (i) about 45 to 75 percent of a resin copolymer consisting primarily of R.sub.3 SiO.sub.1/2 and SiO.sub.4/2 units and containing up to 5 molar percent of R.sub.2 SiO.sub.2/2 and RSiO.sub.3/2 units, wherein each R individually is hydrocarbon radical containing up to 6 carbon atoms and wherein there are from 0.6 to 0.9 R.sub.3 SiO.sub.1/2 units for every SiO.sub.4/2 units and wherein the resin comprises from about 0.2% to about 5.0% by weight, based upon the total resin weight of hydroxy radicals, and
• (ii) about 25 to about 55 percent of a silicone polymer gum having the formula ##STR3## where each R" is independently selected from alkyl, alkenyl, phenyl, aryl or arylalkyl, R'" is either a hydrogen or R.sup.11, R' is either a hydroxy or R", wherein the sum x+y is a number sufficient to give silicone gum a viscosity of from about 800,000 cps to about 200,000,000 cps at 25.degree. C., and the total solids weight of (A)(i) and (A)(ii) being 100 parts, and optionally (iii) an organic solvent;
• and
• (B) about 2 to bout 30 parts by weight, based on the weight of (A)(i) and (A)(ii) being 100 parts, of silicone fluid of the general formula
• R.sup.1 R.sup.2.sub.2 Si(OSiR.sup.1.sub.2).sub.m (OSiR.sup.3 R.sup.4).sub.n OSiR.sup.2.sub.2 R.sup.1 or
• copolymers comprising
• R.sup.1 R.sup.2.sub.2 SiO.sub.1/2,R.sup.1.sub.2 SiO.sub.2/2,R.sup.3 R.sup.4 SiO.sub.2/2, or R.sup.1 SiO.sub.3/2 units,
• wherein each R.sup.2 independently is an alkyl, aryl, or arylalkyl group having up to 10 carbon atoms;
• and wherein R.sup.1,R.sup.3, and R.sup.4 each having up to 10 carbon atoms and independently selected from alkyl, aryl, aryalkyl, alkaryl, hydroxy, hydroxyalkyl, allyl, hydrogen, epoxide-containing-aliphatic, cycloaliphatic, aromatic, amine, aminocarboxy, fully- or partially fluorinated alkyl, alkenyl or aryl, and wherein n+m is such that the viscosity of the fluid is between 35 and 100,000 cps at 25.degree. C., wherein said fluid is compatible with said silicone adhesive composition (A).