Abstract: An apparatus and process for tinting plastic material; specifically, polycarbonate and other plastic eyeglass lenses. The dye solution has an elevated boiling point which allows for dyeing of the material at rates and temperatures above 212 degrees F. The dye solution temperature is maintained and controlled within a preselected tolerance by a temperature controlling unit and its associated heater, which is affixed to the dyeing tank. Dye solution is agitated and dispursed by a stirrer and stirring apparatus, and dye solution level is maintained by an automatic fill apparatus.

Abstract: In a method of treating defective lenses in the eye, the natural lens is removed leaving the lens capsule intact. A curable liquid composition comprising (a) a crosslinkable siloxane polymer, (b) a crosslinker, and (c) a crosslinking catalyst is injected into the lens capsule where the composition cures at body temperature to a solid, transparent synthetic lens which remains clear in the presence of physiological fluids.

Abstract: A low oiling gel filled article comprising a polydiorganosiloxane gel contained within a polysiloxane rubber envelope. The gel is characterized as being the addition product of a first prepolymer having silicon-bonded additional radicals on a terminal silicon atom, and a second prepolymer having silicon-bonded addition radicals on several intermediate silicon atoms. The polydiorganosiloxane prepolymers, and complex fluid, as well as processes for making same, are also disclosed herein.

Abstract: A composition for forming in vivo a lens in an eye comprises silicone polymer and is curable at body temperature to form an optically clear lens which remains so in the presence of physiological fluids. The composition is generally a curable viscous liquid comprising (a) a crosslinkable siloxane polymer, (b) a crosslinker, and (c) a crosslinking catalyst for injecting into the lens capsule of the eye from which the natural lens has been removed.

Abstract: A method of storing blood is disclosed in which a plastic blood collection bag is further supplied with silicone rubber into which pure Ca(OH).sub.2 has been compounded. The method is an efficient way to prolong the useful life of blood, especially the erythrocytes, since their viability can be enhanced by removal of CO.sub.2 from the blood. Such removal can be a method of maintaining an adequate pH balance in the complex blood system which appears to be essential to maintaining the blood in storage for prolonged periods of time.

Abstract: A method of storing blood is disclosed in which a plastic blood collection bag is further supplied with silicone rubber into which pure Ca(OH).sub.2 has been compounded. The method is an efficient way to prolong the useful life of blood, especially the erythrocytes, since their viability can be enhanced by removal of CO.sub.2 from the blood. Such removal can be a method of maintaining an adequate pH balance in the complex blood system which appears to be essential to maintaining the blood in storage for prolonged periods of time.

Abstract: A method of storing blood in which a plastic blood collection bag is further supplied with silicone rubber into which pure Ca(OH).sub.2 has been compounded to prolong the useful life of blood, especially the erythrocytes, since their viability can be enhanced by removal of CO.sub.2 from the blood. Such removal can maintain adequate pH balance in the complex blood system which appears to be essential to maintaining the blood in storage for prolonged periods of time.