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    • 2. 发明授权
    • Radially layered copoly (amidoamine-organosilicon) dendrimers
    • 径向层状共聚(酰胺胺 - 有机硅)树枝状大分子
    • US5739218A
    • 1998-04-14
    • US867143
    • 1997-06-02
    • Petar R. DvornicAgnes M. deLeuze-JallouliDouglas SwansonMichael James OwenSusan Victoria Perz
    • Petar R. DvornicAgnes M. deLeuze-JallouliDouglas SwansonMichael James OwenSusan Victoria Perz
    • C08G77/00C08G73/02C08G77/452C08G77/54C08G83/00C07F283/00
    • C08G83/003
    • Radially layered copoly-dendrimers having unusual surface properties and novel applications have been synthesized and characterized. These are the first copolymeric dendrimers composed of a hydrophilic poly(amidoamine) (PAMAM) interior with hydrophobic organosilicon surfaces. These dendrimers have been prepared by surface modifications of an ethylene diamine core PAMAM dendrimer with (3-acryloxypropyl)methyldimethoxysilane, (3-acryloxypropyl)bis(vinyldimethylsiloxy)methylsilane, (3-acryloxypropyl)tris(trimethylsiloxy)silane, chloromethyltrimethylsilane, and chloromethyldimethylvinylsilane, to varying degrees of surface coverage. The obtained products were characterized by .sup.1 H, .sup.13 C, and .sup.29 Si NMR, and by DSC and TGA. The dendrimers with less completely covered organosilicon surfaces are water soluble, and have considerable surface activity, the best of which lowered the surface tension of water to less than 30 mN/m. Areas in their surface, according to the Gibbs adsorption isotherm, are surprisingly small, i.e., of the order of 100 .ANG..sup.2 /mol. More completely hydrophobed dendrimers are water insoluble, and form spread monolayers on water, capable of sustaining surface pressures over 40 mN/m. Areas per molecule are in the 1,000 .ANG..sup.2 /mol range.
    • 已经合成并表征了具有异常表面性质和新应用的径向层状共聚树枝状聚合物。 这些是由具有疏水性有机硅表面的亲水性聚(酰氨基胺)(PAMAM)内部组成的第一共聚树枝状聚合物。 (3-丙烯酰氧基丙基)甲基二甲氧基硅烷,(3-丙烯酰氧基丙基)双(乙烯基二甲基甲硅烷氧基)甲基硅烷,(3-丙烯酰氧基丙基)三(三甲基甲硅烷氧基)硅烷,氯甲基三甲基硅烷和氯甲基二甲基乙烯基硅烷的乙二胺核心PAMAM树枝状聚合物的表面改性制备了这些树枝状聚合物, 到不同程度的表面覆盖。 得到的产物用1H,13C和29Si NMR表征,通过DSC和TGA表征。 具有较少完全覆盖的有机硅表面的树枝状大分子是水溶性的并且具有相当大的表面活性,其中最好的将水的表面张力降低到小于30mN / m。 根据吉布斯吸附等温线,其表面的面积令人惊讶地很小,即大约为100安培2 /摩尔。 更完全疏水的树枝状大分子是水不溶性的,并且在水上形成扩散单层,能够维持超过40mN / m的表面压力。 每个分子的面积为1000 ANGSTROM 2 / mol范围。
    • 3. 发明授权
    • Dendrimer-based networks containing lyophilic organosilicon and
hydrophilic polyamidoamine nanoscopic domains
    • 基于树枝状聚合物的网络包含亲液性有机硅和亲水性聚酰胺胺纳米视野域
    • US5902863A
    • 1999-05-11
    • US897943
    • 1997-07-21
    • Petar R. DvornicAgnes M. deLeuze-JallouliMichael James OwenSusan Victoria Perz
    • Petar R. DvornicAgnes M. deLeuze-JallouliMichael James OwenSusan Victoria Perz
    • C08L79/00C08G73/00C08G83/00C08L101/00C08L77/02
    • B82Y15/00C08G83/003C08L101/005Y10S977/788
    • Dendrimer-based networks are prepared from copolydendrimer precursors having well defined hydrophilic polyamidoamine (PAMAM) or polypropyleneimine (PPI) interiors, and organosilicon outer layers ending with .tbd.Si--OCH.sub.3 surface groups. These networks have precisely controllable size, shape, and spatial distribution, of nanoscopic hydrophilic and hydrophobic domains. Such constructs are prepared by crosslinking one type of copolydendrimer precursor, or by crosslinking mixtures of different copolydendrimers having different generations of PAMAM or PPI dendrimers in the interior, surrounded by different organosilicon exteriors. Crosslinking can be controlled by adding difunctional, trifunctional, or polyfunctional low molecular weight or oligomeric crosslinking agents; or by exposing a copolydendrimer having hydrolyzable surface groups to atmospheric moisture. Elastomeric dendrimer-based networks have low glass temperatures of -15.degree. C. or below, are optically clear, transparent, colorless; and have a non-stick surface which can be formed into films of small thickness.
    • 基于树枝状聚合物的网络由具有明确限定的亲水性聚酰胺胺(PAMAM)或聚丙烯亚胺(PPI)内部的共聚聚琥珀内酯前体和以3BOND Si-OCH 3表面基团结束的有机硅外层制备。 这些网络具有精确可控的尺寸,形状和空间分布,纳米级亲水和疏水域。 通过交联一种类型的共聚聚琥珀酰前体,或通过在不同的有机硅外部包围的内部交联具有不同代的PAMAM或PPI树枝状聚合物的不同共聚缔结聚合物的混合物来制备这种构建体。 交联可以通过加入双功能,三官能或多官能的低分子量或低聚交联剂来控制; 或通过将具有可水解表面基团的共聚聚琥珀酰亚胺暴露于大气湿气中。 基于弹性树枝状聚合物的网络具有-15℃或更低的玻璃温度低,光学透明,透明,无色; 并且具有可以形成为小厚度的膜的不粘表面。
    • 9. 发明授权
    • Method of making dialkali metal silanolates and siloxanolates
    • 制备二碱金属硅烷醇酯和硅氧烷醇酯的方法
    • US5969173A
    • 1999-10-19
    • US203317
    • 1998-12-01
    • Stephen Ross ClarkeDaniel GraiverJanis Gunars MatisonsMichael James Owen
    • Stephen Ross ClarkeDaniel GraiverJanis Gunars MatisonsMichael James Owen
    • C07F7/08C02F7/08
    • C07F7/0836C07F7/0858C07F7/0874
    • Dialkali metal organosilanolate and dialkali metal organosiloxanolate salts are manufactured from cyclic siloxanes or linear silicone polymers using a heterogeneous interfacial reaction process. A stoichiometric excess of an alkali metal hydroxide such as potassium hydroxide or an alkali metal oxide as a solid or dissolved or dispersed in a compatible solvent, is prepared and used as a first phase. The cyclic siloxane or linear silicone polymer is placed in a second phase either dissolved or dispersed in another solvent which is immiscible with the first phase. The resulting silanolate and siloxanolate salts can be used as monomers for solid-liquid phase and liquid-liquid phase interfacial polymerization or in a polycondensation process for the synthesis of alternating siloxane polymers. They can also be used as ring opening initiators for the base catalyzed polymerization of cyclic siloxanes.
    • Dialkali金属有机硅烷醇酯和二碱金属有机硅氧烷醇盐由环状硅氧烷或线性硅氧烷聚合物使用异质界面反应方法制备。 制备化学计量过量的碱金属氢氧化物如氢氧化钾或作为固体的碱金属氧化物或溶解或分散在相容的溶剂中,并用作第一相。 将环状硅氧烷或线性硅氧烷聚合物置于第二相中,溶解或分散在与第一相不混溶的另一种溶剂中。 所得的硅烷醇酯和硅氧烷酸盐可用作固 - 液相和液 - 液相界面聚合的单体,或用于合成交替的硅氧烷聚合物的缩聚过程。 它们也可以用作环状硅氧烷的碱催化聚合的开环引发剂。