Epoxy-functional polysiloxanes, silicone composition, and coated optical fiber

摘要

Epoxy-functional polysiloxanes containing epoxy groups and hydrocarbyl groups free of aliphatic unsaturation, a silicone composition containing a polysiloxane selected from the aforementioned epoxy-functional polysiloxanes, a cured polysiloxane prepared by exposing the silicone composition to ultraviolet radiation, a coated optical fiber containing a cured polysiloxane, and a method of preparing a coated optical fiber.

主权项

1. An epoxy-functional polysiloxane having the formula:
(R7R12SiO1/2)v(R12SiO2/2)w(R4SiO3/2)x(R6SiO3/2)y(SiO4/2)z wherein R1 is C1 to C3 alkyl or phenyl; R4 is —CH2—CHR2R3, wherein R2 is C2 to C10 hydrocarbyl free of aliphatic unsaturation and R3 is R1 or H; R6 is —CH2—CHR3R5, wherein R5 is an epoxy group; R7 is R1, R4, or R6; v is from 0 to 0.5; w is from 0.1 to 0.9; x is from 0.1 to 0.7; y is from 0.1 to 0.5; z is from 0 to 0.5; and v+w+x+y+z=1.