Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1991-01-28
1992-10-27
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Utilizing plasma, electric, electromagnetic, particulate, or...
264 23, B29D 1100
Patent
active
051587190
ABSTRACT:
In a method of producing an intraocular lens having a substantially clear optic and at least one filamentous haptic having high fracture toughness, solid particles are mixed into an uncured polymer, and the mixture is inserted into a mold. Ultrasonic energy is applied to the mold until the mixture solidifies. Heat is applied to complete the curing process. Ultrasonic energy is also preferably applied to the particles and uncured polymer mixture to improve dispersion of the particles therein.
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"Simultaneous Interpenetrating Networks Based on Epoxy/Acrylic Materials"; Touhsaent et al., in Advances in Chemistry, Series No. 154, American Chemical Society, Washington, D.C., pp. 206-233, 1976.
"The Fracture of Glassy Polymers", Doyle et al., Proceedings of The Royal Society, London, vol. 329, pp. 137-151, Aug. 8, 1972.
"Stress-Whitening in High-Impact Polystyrenes", Bucknall and Smith, Polymer, vol. 6, pp. 437-439, 1965.
"What Failure Mechanisms Tell About Toughened Epoxy Resins", Plastics Engineering, Mar. 1975, pp. 45-47, Greenwich, Conn. by Rowe and Riew.
Chang Scott
Cheng Mei-Ing
Creasman Edwin A.
McCullough Jimmy D.
Navarrete David R.
Lowe James
Optical Radiation Corporation
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