| 摘要 |
A process for making a fluorosilicone MDaDFbM′ where M=R1R2R3SiO1/2; M′=(OH)R6R7SiO1/2 or (OH)R4R5SiO1/2; D=R4R5SiO2/2; and DF=R6R7SiO2/2; where the subscript a is zero or positive, the subscript b is positive and the subscripts a and b satisfy the following relationship: b>0.4(a+b) and R1 is selected from the group of 1 to 20 carbon atom monovalent alkyl, aryl, or alkaryl hydrocarbon radicals and terminally unsaturated alkenyl groups of from 2 to 10 carbon atoms; R2, R3 are each independently any monovalent hydrocarbon radical: alkyl, aryl, or alkaryl of from 1 to 20 carbon atoms or R1 and each R4 and R5 are any monovalent hydrocarbon radical: alkyl, aryl, alkenyl, or alkaryl of from 1 to 20 carbon atoms, and R6 is a fluorine substituted 3 to 20 carbon atom monovalent hydrocarbon radical having no fluorine substitution on the alpha or beta carbon atoms of the radical and R7 is any monovalent hydrocarbon radical: alkyl, aryl, or alkaryl of from 1 to 20 carbon atoms or R6 by reacting 1) b moles of (R6R7SiO)3, with 2) a moles of (R4R5SiO)3, 3) R1R2R3SiOH and 4) an oxygenated promoter. Compositions made by the process and articles of manufacture made from the compositions.
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