An organosilicon endcapper having one aliphatic unsaturation

摘要

An organosilicon compound comprising one aliphatic unsaturation described by formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="19" wi="116" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" /></Chemistry> where each R<Sup>1</Sup> is an independently selected hydrocarbon radical free from aliphatic unsaturation having 1 to 18 carbon atoms; each R<Sup>2</Sup> is an independently selected hydrocarbon radical free from aliphatic unsaturation having 1 to 18 carbon atoms; each X is independently selected from halogen, alkoxy, acyloxy or ketoximo; t is 2 or 3; n is 0, 1 or 2; u is 0 or 1; each Z is independently selected from divalent hydrocarbon radicals free of aliphatic unsaturation having 2 to 18 carbon atoms or a combination of divalent hydrocarbon radicals and siloxane segments; and Y is selected from hydrocarbon radicals comprising one aliphatic unsaturation and 2 to 18 carbon atoms or a combination of hydrocarbon radicals and siloxane segments. The organosilicon compounds comprising one aliphatic unsaturation of the present invention are useful as endcappers for polymers.