High refractive index polysiloxanes and their preparation

Details High refractive index polysiloxanes and their preparation High refractive index polysiloxanes and their preparation

2002-07-18

2008-09-30

Peng, Kuo-Liang (Department: 1796)

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

Synthetic resins

From silicon reactant having at least one...

C528S039000

Reexamination Certificate

active

07429638

ABSTRACT:
A polysiloxane having a refractive index of about 1.56 measured at light wavelength 633 nm, characterized in that the polysiloxane includes siloxane T units of the formulawhere A represents an alkylene group having 1 to 4 carbon atoms: n=0 or 1; m is at least 1; and Ar is an aryl group substituted by at least one iodine, bromine or chlorine atom, or is a polynuclear aromatic group. The invention includes chlorosilanes having the formula (Ar) m-(A)nSiCl3, useful in forming high refractive index polysiloxanes.

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Derwent Data base XP-002226868, XP-002226869, date unknown.

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