Polysiloxanes, methods of making same and high refractive index

Details Polysiloxanes, methods of making same and high refractive index Polysiloxanes, methods of making same and high refractive index

1992-04-14

1993-08-03

Bleutge, John C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 31, 525478, 525479, C08G 7720

Patent

active

052330079

ABSTRACT:
A new class of polysiloxanes is disclosed. Such polysiloxanes have the formula ##STR1## wherein each R and R.sup.4 is independently selected from alkyl radicals, substituted alkyl radicals, aryl radicals and substituted aryl radicals; each R.sup.1 is independently selected from divalent radicals; each R.sup.2 is independently selected from aryl radicals and substituted aryl radicals; each R.sup.3 is independently selected from monovalent hydrocarbon radicals having a multiple bond and monovalent substituted hydrocarbon radicals having a multiple bond; n is an integer in the range of about 6 to about 500; and m is an integer in the range of 0 to about 500. Methods for making such polysiloxanes are also disclosed. In addition, high refractive index, that is having a refractive index of at least about 1.46, silicone compositions useful in the fabrication of lens bodies are disclosed.

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: 4380643 (1983-04-01), Yoshida et al.
patent: 4418165 (1983-11-01), Polmanteer et al.
patent: 4535141 (1985-08-01), Kroupa
patent: 4573998 (1986-03-01), Mazzocco
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: 4778860 (1988-10-01), Morita et al.
patent: 4785047 (1988-11-01), Jensen
patent: 4868151 (1989-09-01), Reich et al.
patent: 4882398 (1989-11-01), Mbah
patent: 5006580 (1991-04-01), Kasuya et al.
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 Properites of Alkyl-Substitute Polysiloxanes, 1990 American Chemical Society, pp. 91-96.
Zaph et al, Synthesis and Properties of New UV-Curable Silicones with High Refractive Index, Polymeric Prints 30(2), p. 107 (1989).
Grigoras et al, Conformational Analysis of Substituted Polysiloxane polymers, 1990 American Chemical Society, pp. 125-144.
Grigoras, Substituted Polysiloxane Polymers:Conformation of the Pendant Groups, Polymer Preprints, 31(1), 697 (1990).

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