| 摘要 |
PURPOSE: An organosilicon compound comprising one aliphatic unsaturation which is capable of endcapping a polymer and providing more than one "most" reactive hydrolyzable group per polymer chain end is provided. CONSTITUTION: An organosilicon compound comprising one aliphatic unsaturation described by formula(1) where each R1 is an independently selected hydrocarbon radical free from aliphatic unsaturation comprising 1 to about 18 carbon atoms; each R2 is an independently selected hydrocarbon radical free from aliphatic unsaturation comprising 1 to about 18 carbon atoms; each X is independently selected from the group consisting of halogen, alkoxy, acyloxy, and ketoximo; t is 2 or 3; n is 0, 1, or 2; u is 0 or 1; each Z is independently selected from the group consisting of divalent hydrocarbon radicals free of aliphatic unsaturation comprising about 2 to 18 carbon atoms and a combination of divalent hydrocarbon radicals and siloxane segments; and Y is selected from the group consisting of hydrocarbon radicals comprising one aliphatic unsaturation and 2 to about 18 carbon atoms and a combination of hydrocarbon radicals, siloxane segments, and a divalent hydrocarbon radical free of aliphatic unsaturation comprising about 2 to 18 carbon atoms. The organosilicon compounds comprising one aliphatic unsaturation are useful as endcappers for polymers.
|
