Polysiloxanes, methods for producing such polysiloxanes and high index silicones refractive prepared from such polysiloxanes.

摘要

A NEW CLASS DESCRIBED polysiloxanes. TALES polysiloxanes have the formula (I) wherein each RY R4 is independently selected from alkyl, substituted alkyl radicals, aryl radicals and substituted aryl radicals, each R1 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 that link multiple hydrocarbon radicals substituted monovalent MULTIPLE that link; N is an integer in the category of 6 A ON 500; M is an integer in the category of 0 to 500. DESCRIBED ON Methods for producing polysiloxanes. DESCRIBED silicone compositions useful in the manufacture LENSES bodies considering the refractive indices high as the refractive indices EXCEEDING 1,46.