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    • 2. 发明授权
    • Process for producing controlled viscosity fluorosilicone polymers
    • 生产受控粘度氟硅氧烷聚合物的方法
    • US07671161B2
    • 2010-03-02
    • US11549137
    • 2006-10-13
    • Nancy E. GoshJohn S. RazzanoAnping Wang
    • Nancy E. GoshJohn S. RazzanoAnping Wang
    • C08G77/24
    • C08G77/24
    • 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.
    • 制备氟硅酮MDaDFbM的方法,其中M = R 1 R 2 R 3 SiO 1/2; M'=(OH)R6R7SiO1 / 2或(OH)R4R5SiO1 / 2; D = R4R5SiO2 / 2; DF = R6R7SiO2 / 2; 其中下标a为零或正,下标b为正,下标a和b满足以下关系:b> 0.4(a + b),R1选自1至20个碳原子的一价烷基,芳基 或烷芳基烃基和具有2-10个碳原子的末端不饱和烯基; R 2,R 3各自独立地为任何一价烃基:具有1-20个碳原子的烷基,芳基或烷芳基或R 1,并且每个R 4和R 5是任何一价烃基:1至20的烷基,芳基,链烯基或烷芳基 碳原子,R6是氟取代的3〜20个碳原子,在基团的α或β碳原子上不具有氟取代的一价烃基,R 7是任何一价烃基:1至20的烷基,芳基或烷芳基 碳原子或R6通过使1)b摩尔的(R6R7SiO)3与2)摩尔的(R 4 R 5 SiO)3,3)R 1 R 2 R 3 SiOH和4)含氧促进剂反应。 由组合物制成的方法和制品制成的组合物。
    • 10. 发明授权
    • Fluorosilicone copolymers and process for the preparation thereof
    • 氟硅酮共聚物及其制备方法
    • US3974120A
    • 1976-08-10
    • US574331
    • 1975-05-05
    • John S. RazzanoVerne G. Simpson
    • John S. RazzanoVerne G. Simpson
    • C08G77/00C08G77/04C08G77/06C08G77/08C08G77/22C08G77/24C08K5/15
    • C08G77/08C08G77/24
    • Diorganopolysiloxane copolymers having a viscosity from 100,000 to 200,000,000 centipoise at 25.degree.C., are produced by (a) forming an admixture of (i) a cyclic alkyl trifluoropropyl trisiloxane, (ii) a second cyclic diorgano trisiloxane, (i) being present in an amount of 40 to 85 mol % of the total of (i) and (ii), (iii) from 5 to 300 parts per million of an alkyl lithium catalyst, the alkyl component containing from 1 to 12 carbon atoms, and (iv) an aprotic solvent, said aprotic solvent being capable of dissolving both the trimers (i) and (ii) and the copolymer product, (b) reacting said admixture at a temperature between 0.degree.C. and 150.degree.C. to form the copolymer, and (c) recovering the copolymer from the reaction mixture.
    • 通过(a)形成(i)环状烷基三氟丙基三硅氧烷,(ii)第二环状二有机三硅氧烷,(i)存在于(ⅰ)中的第二环状二有机基三硅氧烷的混合物来制备在25℃下具有100,000至200,000,000厘泊粘度的二羟基聚硅氧烷共聚物 (i)和(ii),(iii)的总量的40〜85mol%为5〜300ppm的烷基锂催化剂,含有1〜12个碳原子的烷基成分和(iv )非质子溶剂,所述非质子溶剂能够溶解三聚物(i)和(ii)和共聚物产物,(b)使所述混合物在0℃至150℃之间的温度下反应以形成共聚物 ,和(c)从反应混合物中回收共聚物。