Radiation-curable acrylate/silicone pressure-sensitive adhesive compositions

A pressure-sensitive adhesive formed from the free radical polymerization of a composition comprising:

• (a) at least about 20 weight percent of polymer selected from the group consisting of polymers falling within the general formula ##STR20## and mixtures thereof, wherein:
• X are monovalent moieties having ethylenic unsaturation which can be the same or different;
• Y are divalent linking groups which can be the same or different and which serve to activate X toward free radical polymerization;
• D are monovalent moieties which can be the same or different selected from the group consisting of hydrogen, an alkyl group of 1 to about 10 carbon atoms, and aryl;
• R are divalent hydrocarbon groups which can be the same or different;
• R.sup.1 are monovalent moieties which can be the same or elected from the group consisting of alkyl and aryl;
• R.sup.2 are monovalent moieties which can be the same or different selected from the group consisting of alkyl and aryl;
• R.sup.3 are monovalent moieties which can be the same or different selected from the group consisting of alkyl vinyl, and aryl;
• R.sup.4 are monovalent moieties which can be the same or different selected from the group consisting of alkyl vinyl, and aryl;
• and
• n is an integer of about 200 to about 1000;
• (b) about 0.5 to about 80 weight percent of monofunctional free radically polymerizable vinyl monomer which is capable of copolymerizing with said polymer;
• and
• (c) 80 to 200 parts per 100 parts by weight of element (a) of silicate MQ tackifying resin to impart a degree of adhesive tack to the cured composition at the use temperature;
• wherein said weight percentages set forth in element (a) and element (b) are based upon the combined weights of said polymer of element (a) and said monomer of element (b).