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    • 6. 发明申请
    • POLYMER COMPOSITIONS
    • 聚合物组合物
    • WO2008132237A2
    • 2008-11-06
    • PCT/EP2008/055372
    • 2008-04-30
    • DOW CORNING CORPORATIONGOUGH, Helen, L.MACKINNON, Iain, A.O'HARE, SarahDURAND, Geraldine
    • GOUGH, Helen, L.MACKINNON, Iain, A.O'HARE, SarahDURAND, Geraldine
    • C08G77/46
    • C08G77/46C08K5/54C08L83/04C08L83/12C08L2666/44C08L83/00
    • The invention relates to a water-insoluble hydrophilic polymer network comprising polyorganosiloxane polyoxyalkylene block copolymer moieties characterised that they are linked to each other through an organosilicon cross-linking moiety, provided that the cross-linking moiety forming the links between polyorganosiloxane polyoxyalkylene block copolymer moieties result from an addition reaction between cross-linking sites present on the polyorganosiloxane polyoxyalkylene block copolymer moieties prior to formation of the hydrophilic polymer network, selected from silicon-bonded hydrogen atoms and aliphatically unsaturated groups, and reactive groups present on the cross-linking moiety prior to formation of the hydrophilic polymer network. Also disclosed is a process for making the polymer network, and a curable composition able to be reacted into such polymer network.
    • 本发明涉及包含聚有机硅氧烷聚氧化烯嵌段共聚物部分的水不溶性亲水性聚合物网络,其特征在于它们通过有机硅交联部分彼此连接,条件是形成聚有机硅氧烷聚氧化烯嵌段共聚物部分之间的连接的交联部分导致 在形成亲水性聚合物网络之前,存在于聚有机硅氧烷聚氧化烯嵌段共聚物部分上的交联位点之间的加成反应,选自与硅键合的氢原子和脂族不饱和基团,以及存在于交联部分之前的反应性基团, 形成亲水性聚合物网络。 还公开了制备聚合物网络的方法,并且可固化组合物能够反应成这种聚合物网络。
    • 7. 发明申请
    • POLYMER AND POLYMER COMPOSITIONS
    • 聚合物和聚合物组合物
    • WO2008132236A2
    • 2008-11-06
    • PCT/EP2008055369
    • 2008-04-30
    • DOW CORNINGDE BUYL FRANCOISDURAND GERALDINEMACKINNON IAIN AO'HARE SARAH
    • DE BUYL FRANCOISDURAND GERALDINEMACKINNON IAIN AO'HARE SARAH
    • C08G77/46
    • C08G77/46C08K5/54C08L83/04C08L83/12C08L2666/44C08L83/00
    • A polyorganosiloxane polyoxyalkylene block copolymer having one or more polyorganosiloxane blocks and one or more polyoxyalkylene blocks linked to each other via divalent radicals which comprises at least two silicon-bonded alkoxy groups, preferably of the form PS (A PO) m (A PS) n , wherein PO is a polyoxyalkylene block, PS represents a polyorganosiloxane block, A is a divalent radical, m and n have independently a value of at least 1, comprising at least one alkoxy-substituted siloxane unit of the formula (R' ) q (OR)- SiO 3-q/2' wherein R represents an alkyl group having 1 to 4 carbon atoms and each R' represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, or an alkoxy group of the formula -OR and q has a value of 0, 1 or 2, provided at least two silicon-bonded groups OR are present in the block copolymer. Also provided is a curable composition of the above which may comprise a condensation catalyst and a hydrophilic polymer network made from curing the composition in the presence of moisture, which exhibit interesting reversible hydrophilic properties.
    • 一种具有一个或多个聚有机硅氧烷嵌段和一个或多个聚氧化烯嵌段的聚有机硅氧烷聚氧化烯嵌段共聚物,其通过二价基团相互连接,所述二价基团包含至少两个与硅键合的烷氧基,优选形式为PS(A PO) 其中PO是聚氧化烯嵌段,PS表示聚有机硅氧烷嵌段,A是二价基团,m和n独立地为至少为1的值,包括至少一个 式(R')q(OR) - SiO 3-q / 2'的烷氧基取代的硅氧烷单元其中R表示具有1至4个碳原子的烷基 并且每个R'表示具有1至6个碳原子的烷基,苯基或式-OR的烷氧基,并且q具有0,1或2的值,条件是至少两个硅键合基团OR分别为 存在于嵌段共聚物中。 还提供了上述可固化组合物,其可以包含缩合催化剂和通过在水分存在下固化组合物而形成的亲水性聚合物网络,其显示出有趣的可逆亲水性质。