Abstract: A sustained/immediate acting ketoprofen patch. A moisture permeable backing, a moisture non-permeable primer, a moisture high-permeable drug layer containing ketoprofen and a skin adhesion layer controlling release of a drug solution are piled up. An ethyl acetate soluble acrylic/rubber adhesive is coated onto a silicon coated paper, dried and transfer coated onto the backing to form the primer. The drug layer is formed by coating a drug solution onto a silicon coated paper, drying and transfer coating onto the primer. The skin adhesion layer is formed by coating a mixture of a solution prepared by dissolving an emulsifier in ethyl acetate and acrylic adhesive, drying and transfer coating onto the drug layer. The ketoprofen patch has a drug release controlling function and a good adhesion strength. The drug transferring effect through the skin is good.

Abstract: A polyolefin composition which is photolyzable, includes polyolefin; and an effective amount of a photolytic agent which is an alkoxydimethylsilylferrocene having a general formula (I): ##STR1## wherein R represents C.sub.n H.sub.2n+1 in which n ranges from 4 to 10, and R.sub.1 and R.sub.2 represent H or SICH.sub.3).sub.2 OR and may be the same or different. The polyolefin is preferably selected from the group consisting essentially of a low density polyethylene, a high density polyethylene, a polypropylene, an ethylene-propylene copolymer, an ethylene-butene copolymer, an ethylene-hexene copolymer, an ethylene-octene copolymer, an ethylene-vinyl acetate copolymer, and mixtures thereof. The alkoxydimethylsilylferrocene is preferably present in an amount ranging from 0.001 weight % to 0.5 weight %, most preferably, in an amount ranging from 0.005 weight % to 0.2% weight %.