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    • 3. 发明授权
    • Polymerization of siloxanes
    • 硅氧烷的聚合
    • US06346593B1
    • 2002-02-12
    • US09458249
    • 1999-12-09
    • Peter HupfieldGrainne MoloneyAvril SurgenorRichard Taylor
    • Peter HupfieldGrainne MoloneyAvril SurgenorRichard Taylor
    • C08G7708
    • C08G77/08C08G77/26
    • A polymerization process comprising mixing siloxane polymers with organosilicon compounds having at least one silicon-bonded group RN, which is a substituent comprising at least one amine group, and with a phosphazene base catalyst and allowing the siloxanes and organosilicon compounds to polymerize to form amino-functional polyorganosiloxane polymers is claimed. Preferably the phosphazene base is selected from the following formulae: ((R12N)3P═N—)x(R12N)3−xP═NR2; {((R12N)3P═N—)x(R12N)3−xP—N(H)R2}+{A−} {((R12N)3P═N—)y(R12N)4−yP}+{A}− or {(R12N)3P═N—(P(NR12)2═N)n—P+(NR12)3}{A−} in which R1 is hydrogen or an optionally substituted hydrocarbon group, or in which two R1 groups bonded to the same N atom may be linked to complete a heterocyclic ring, R2 is hydrogen or an optionally substituted hydrocarbon group, x is 1, 2 or 3; y is 1, 2, 3 or 4, n is an integer with a value of from 1 to 10 and A is an anion.
    • 聚合方法包括将硅氧烷聚合物与具有至少一个含硅键合基团RN(其是包含至少一个胺基的取代基)和磷腈碱催化剂的有机硅化合物混合,并使硅氧烷和有机硅化合物聚合形成氨基 - 要求保护功能性聚有机硅氧烷聚合物。 优选地,磷腈碱选自下式:其中R 1是氢或任选取代的烃基,或者其中与相同N原子键合的两个R 1基团可以连接以形成杂环,R 2是氢或任选地 取代的烃基,x为1,2或3; y为1,2,3或4,n为1〜10的整数,A为阴离子。
    • 4. 发明授权
    • Polymerization of siloxanes
    • 硅氧烷的聚合
    • US06284859B1
    • 2001-09-04
    • US09458251
    • 1999-12-09
    • Peter HupfieldAvril SurgenorRichard Taylor
    • Peter HupfieldAvril SurgenorRichard Taylor
    • C08G7708
    • C08G77/08
    • A polymerization process comprising mixing siloxanes having silicon-bonded groups R′ with ionic phosphazene base catalysts and allowing condensation via reaction of Si—R′ groups with the formation of a Si—O—Si linkage, R′ denoting a hydroxyl group or a hydrocarbonoxy group having up to 8 carbon atoms is claimed. The catalysts may be of the general formulae: {((R12N)3P═N—)x(R12N)3−xP—N(H)R2}+{A−} or {((R12N)3P═N—)y(R12N)4−yP}+{A}− in which R1 is hydrogen or an optionally substituted hydrocarbon group or in which two R1 groups bonded to the same N atom may be linked to complete a heterocyclic ring, R2 is hydrogen or an optionally substituted hydrocarbon group, x is 1, 2 or 3, y is 1, 2, 3 or 4 and A is an anion. Also claimed is a process which comprises mixing siloxanes having silicon-bonded groups R′ and cyclic or linear siloxanes having no silicon-bonded groups R′ with ionic phosphazene base catalysts and allowing the siloxane having silicon-bonded groups R′ to condense and the cyclic and linear siloxanes having no silicon-bonded R′ groups to polymerize by equilibration.
    • 一种聚合方法,包括将具有硅键合基团R'的硅氧烷与离子磷腈碱催化剂混合,并通过Si-R'基团与Si-O-Si键的形成反应进行缩合,R'表示羟基或烃氧基 要求具有至多8个碳原子的基团。 催化剂可以具有以下通式:其中R 1是氢或任选取代的烃基,或者其中与相同N原子键合的两个R 1可以连接成完全杂环,R 2是氢或任选被取代的烃基 ,x为1,2或3,y为1,2,3或4,A为阴离子。 还要求保护的方法包括将具有硅键合基团R'的硅氧烷与不与硅键合基团R'的环状或线性硅氧烷与离子型磷腈碱催化剂混合,并使具有硅键合基团R'的硅氧烷缩合并循环 和不具有硅键合的R'基团的直链硅氧烷通过平衡聚合。