Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1992-05-18
1994-01-11
Bleutge, John C.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
528 15, 528 31, 528 32, C08G 7720, C08F28312
Patent
active
052782581
ABSTRACT:
Polymeric materials which are optically clear and resistant to discoloration are disclosed. In one embodiment, such compositions comprise optically clear, cross-linked polymers derived from a mixture comprising (A) a vinyl-containing polyorganosiloxane component, and (B) an organosilicon component including silicon-bonded hydride groups which react with vinyl groups included in (A) during the polymerization and (C) an effective platinum group metal-containing catalyst component, provided that the mole ratio of vinyl groups to silicon-bonded hydride groups in the mixture is greater than 1.2, preferably greater than about 4 or about 5, and is such that the polymer has a reduced discoloration susceptibility relative to a substantially identical polymer having a mole ratio of vinyl groups to silicon-bonded hydride groups in the precursor mixture equal to 1.2.
REFERENCES:
patent: 3284406 (1966-11-01), Nelson
patent: 3341490 (1967-09-01), Burdick
patent: 3457214 (1969-07-01), Modic
patent: 3992355 (1976-11-01), Itoh et al.
patent: 3996187 (1976-12-01), Travnicek
patent: 3996189 (1976-12-01), Travnicek
patent: 4122246 (1978-10-01), Sierawski
patent: 4380643 (1983-04-01), Yoshida et al.
patent: 4418165 (1983-11-01), Polmanteer et al.
patent: 4535141 (1985-08-01), Kroupa
patent: 4542542 (1985-09-01), Wright
patent: 4573998 (1986-03-01), Mazzocco
patent: 4608050 (1986-08-01), Wright et al.
patent: 4615702 (1986-10-01), Koziol et al.
patent: 4647282 (1987-03-01), Fedorov et al.
patent: 4737558 (1988-04-01), Falcetta et al.
patent: 4785047 (1988-11-01), Jensen
patent: 4801642 (1989-01-01), Janik et al.
patent: 4868151 (1989-09-01), Reich et al.
patent: 4882398 (1989-11-01), Mbah
patent: 4973642 (1990-11-01), Donatelli et al.
patent: 4990560 (1991-02-01), Ikeno et al.
Nishi, Okihiro, "Refilling the lens of the rabbit eye after intercapsular cataract surgery using an endocapsular balloon and an anterior capsule suturing technique", J. Cataract Refract Surgery-vol. 15, Jul. 1989.
Nishi, et al., "Further development of experimental techniques for refilling the lens of animal eyes with a balloon", J. Cataract Refract Surg-vol. 15, Sep. 1989.
Parel et al., "Phaco-Ersatz:cataract surgery designed to preserve accommodation", Graefe's Arch Clin Exp Ophthalmol (1986) 224:165-173.
Haefliger, et al., "Accommodation of an Endocapsular Silicone Lens (Phaco-Ersatz) in the Nonhuman Primate", Ophthalmology, May 1987, vol. 94, No. 5.
Saam, Formation of Linear Siloxane Polymers, 1990 American Chemical Society, pp. 71-89.
Fish et al., Ring Opening Polymerization of Cyclotetrasiloxanes with Large Substituents, pp. 36-37, Polymer Reprints, 31(1), Apr. 1990.
Boutevin et al., Synthesis of Fluorinated Polysiloxanes. 8. Properties at Low and High Temperatures of Polysiloxanes with Fluronated Graft Macromolecules, vol. 24, (3), pp. 629-632 (Feb. 4, 1991).
Rasoul et al., Thermal and Rheological Properties of Alkyl-Substitute Polysiloxanes, 1990 American Chemical Society, pp. 91-96.
Zapf et al., Synthesis and Properties of New UV-Curable Silicones with High Refractive Index, Polymeric Prints 30(2), pp. 107 (1989).
Grigoras et al., Conformational Analysis of Substituted Polysiloxane Polymers, 1990 American Chemical Society, pp. 125-144.
Christ F. Richard
Gerace John D.
Allergan Inc.
Bleutge John C.
Glass Margaret W.
Peterson Gordon L.
LandOfFree
Cross-linked silicone polymers, fast curing silicone precursor c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cross-linked silicone polymers, fast curing silicone precursor c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-linked silicone polymers, fast curing silicone precursor c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1632185