Cross-linked optical siloxane polymer

Details Cross-linked optical siloxane polymer Cross-linked optical siloxane polymer

1986-05-06

1988-10-25

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525342, 525477, 526279, C08F13008, C08F28312

Patent

active

047805102

ABSTRACT:
A cross-linked optical siloxane polymer having a group for modifying a refractive index of the polymer which is introduced in a side chain of the polymer by a hydrosilyl reaction of one of the following systems:
(1) a compound (A) having a carbon-carbon unsaturated bond and a group for modifying a refractive index, and a siloxane polymer (B) having a silicon hydride group wherein the molar ratio of the silicon hydride group to the carbon-carbon unsaturated bond is more than 1, and
(2) a compound (A') having a silicon hydride group and a group for modifying a refractive index, and a siloxane polymer (B') having a carbon-carbon unsaturated bond wherein the molar ratio of the carbon-carbon unsaturated bond to the silicon hydride group is more than 1,
the polymer being cross-linked by a hydrosilyl reaction of the unreacted silicon hydride groups of the silixane polymer (B) with a compound (C) having at least two carbon-carbon unsaturated bonds when the system (1) is used, or by a hydrosilyl reaction of the unreacted carbon-carbon unsaturated bonds of the siloxane polymer (B') with a compound (C') having at least two silicon hydride groups when the system (2) is used, the refractive index of which is easily and precisely modified.

REFERENCES:
patent: 3996189 (1976-01-01), Trovnicek
patent: 4332922 (1982-06-01), Kossmehl et al.
patent: 4559396 (1985-12-01), Sasaki et al.

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