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    • 3. 发明授权
    • Method of forming siloxane polymers using a heteropoly catalyst having a
keggin structure
    • 使用具有keggin结构的杂多酸催化剂形成硅氧烷聚合物的方法
    • US5608096A
    • 1997-03-04
    • US580417
    • 1995-12-28
    • Dimitris E. KatsoulisJohn R. Keryk
    • Dimitris E. KatsoulisJohn R. Keryk
    • C07F7/08C08G77/08
    • C07F7/0874C08G77/08
    • The invention relates to a method of forming siloxane polymers using a heteropoly catalyst having a Keggin structure. The method comprises contacting a fluid comprising at least one siloxane polymer precursor selected from the group consisting of cyclic siloxanes (I) having the formula (RR'SiO).sub.a and linear siloxanes (II) having the formula ##STR1## where R is a substituted or unsubstituted monovalent hydrocarbon having from 1 to 6 carbon atoms, R' is hydrogen or a substituted or unsubstituted monovalent hydrocarbon having from 1 to 6 carbon atoms, a is at least 3 and b is at least 1; with an effective amount of a heteropoly catalyst having a Keggin structure, selected from the group consisting of heteropoly acids (III) having the formula H.sub.n XM.sub.12 O.sub.40, salts thereof and mixed acid-salts thereof, where X is B.sup.+3, Si.sup.+4, Ge .sup.+4, p.sup.+5, M is Mo.sup.+6 and n is 3, 4 or 5, as required for the valence of the heteropoly acid to equal 0, at a temperature ranging from about 23.degree. C. to the boiling point of the siloxane polymer precursor.
    • 本发明涉及使用具有Keggin结构的杂多酸催化剂形成硅氧烷聚合物的方法。 该方法包括使包含至少一种选自具有式(RR'SiO)a的环状硅氧烷(I)和具有式“IMAGE”的线性硅氧烷(II))的硅氧烷聚合物前体的流体接触,其中R是取代的 或未取代的具有1至6个碳原子的一价烃,R'是氢或具有1至6个碳原子的取代或未取代的一价烃,a至少为3,b为至少1; 与有效量的具有Keggin结构的杂多酸催化剂,其选自具有式H n X M 12 O 40的杂多酸(III),其盐和其混合的酸盐,其中X是B + 3,Si + 4,Ge +4,p + 5,M为Mo + 6,n为3,4或5,如杂多酸的化合价等于0所需,在约23℃至沸点 硅氧烷聚合物前体。
    • 10. 发明授权
    • Silane modified polyoxometalate anions
    • 硅烷改性多金属氧酸盐阴离子
    • US5548052A
    • 1996-08-20
    • US364336
    • 1994-12-27
    • Dimitris E. KatsoulisJohn R. Keryk
    • Dimitris E. KatsoulisJohn R. Keryk
    • C07F7/02C07F11/00C08G77/22C08G77/398
    • C07F11/005
    • Silane modified polyoxometalate anions represented by the formula YZ(SiRR').sub.n were prepared by reacting a silane having two hydrolyzable groups with a lacunary polyoxometalate anion. In the formula YZ(SiRR').sub.n, Z is M.sub.11 O.sub.39.sup.-12, M.sub.9 O.sub.34.sup.-14 or M.sub.17 O.sub.61.sup.-20, where M is tungsten or molybdenum; Y is As.sup.+5, Si.sup.+4, B.sup.+3, Ge.sup.+4, P.sup.+5 or Fe.sup.+5 when Z is M.sub.11 O.sub.39.sup.-12, Y is Si.sup.+4, Ge.sup.+4, or P.sup.+5 when Z is M.sub.9 O.sub.34.sup.-14 and Y is As.sub.2.sup.+10 or P.sub.2.sup.+10 when Z is M.sub.17 O.sub.61.sup.-20 ; R is selected from the group consisting of monovalent hydrocarbon radicals having from 1 to 24 carbon atoms, monovalent halogenated hydrocarbon or carbon radicals having from 1 to 24 carbon atoms and monovalent hydrocarbon radicals having from 1 to 24 carbon atoms substituted with an epoxy group, an amino group, a mercapto group or a methacrylo group; R' is a hydrogen atom or R and n represents the number of (.dbd.SiRR').sup.+2 groups bonding to the polyoxometalate anion and has a value from 1 to 3.
    • 通过使具有两个可水解基团的硅烷与空隙多金属氧酸盐阴离子反应制备由式YZ(SiRR')n表示的硅烷改性的多金属氧酸盐阴离子。 在式YZ(SiRR')n中,Z是M11O39-12,M9O34-14或M17O61-20,其中M是钨或钼; 当Z为M11O39-12时,Y为As + 5,Si + 4,B + 3,Ge + 4,P + 5或Fe + 5,当Z为M9O34时,Y为Si + 4,Ge + 4或P + -14,当Z为M17O61-20时,Y为As2 + 10或P2 + 10; R选自具有1至24个碳原子的一价烃基,一价卤代烃或具有1至24个碳原子的碳基和具有1至24个碳原子的被环氧基取代的一价烃基, 氨基,巯基或甲基丙烯酰基; R'是氢原子或R,n表示与多金属氧酸盐阴离子结合的(= SiRR')+ 2基团的数目,并且具有1至3的值。