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    • 34. 发明授权
    • Foundry binder
    • 铸造粘合剂
    • US06378599B1
    • 2002-04-30
    • US09297572
    • 1999-05-03
    • Helmut SchmidtMartin MennigGerhard Jonschker
    • Helmut SchmidtMartin MennigGerhard Jonschker
    • B22C116
    • C09C3/12C01P2004/64C03C17/007C03C2217/445C03C2217/475C09D183/04C08L2666/54
    • A foundry binder is obtainable by surface modification of a) colloidal inorganic particles with b) one or more silanes of the general formula (I) Rx—Si—A4−x  (I) where the radicals A are identical or different and are hydroxyl groups or groups which can be removed hydrolytically, except methoxy, the radicals R are identical or different and are groups which cannot be removed hydrolytically and x is 0, 1, 2 or 3, where x≧1 in at least 50 mol % of the silanes; under the conditions of the sol-gel process with a below-stoichiometric amount of water, based on the hydrolysable groups which are present, with formation of a nanocomposite sol, and further hydrolysis and condensation of the nanocomposite sol, if desired, before it is brought into contact with the foundry sand.
    • 一种铸造粘结剂可以通过a)胶体无机颗粒的表面改性获得,b)一种或多种通式(I)的硅烷,其中基团A相同或不同,并且是羟基或水解除外的基团,除了甲氧基, 基团R相同或不同,并且是不能被水解除去的基团,x是0,1,2或3,其中在至少50mol%的硅烷中x> = 1;在溶胶 - 凝胶法与 基于存在的可水解基团,形成纳米复合溶胶的低于化学计算量的水,并且如果需要,在与铸造砂接触之前,进一步水解和缩合纳米复合溶胶。
    • 35. 发明授权
    • Method for providing a metal surface with a vitreous layer
    • 提供具有玻璃质层的金属表面的方法
    • US6162498A
    • 2000-12-19
    • US402742
    • 1999-10-08
    • Martin MennigGerhard JonschkerHelmut Schmidt
    • Martin MennigGerhard JonschkerHelmut Schmidt
    • C03C1/00C23C18/12B05D3/02
    • C03C1/008C03C2207/00C03C2207/04C03C2207/08C23C18/1212C23C18/1225C23C18/1241C23C18/127C23C18/1295Y02T50/67
    • Disclosed is a process for providing a metallic surface with a vitreous layer which is both decorative and scratch resistant and corrosion inhibiting. Said process is characterized in that a coating composition which is obtainable by a process comprising the hydrolysis and polycondensation of one or more silanes of the general formula (I)R.sub.n SiX.sub.4-n (I)wherein the groups X, the same or different from each other, are hydrolyzable groups or hydroxyl groups, the radicals R, the same or different from each other, represent hydrogen, alkyl, alkenyl or alkynyl groups having up to 12 carbon atoms and aryl, aralkyl and alkaryl groups having 6 to 10 carbon atoms, and n is 0, 1 or 2, provided that at least one silane with n=1 or 2 is employed, or oligomers derived therefrom, in the presence ofa) nanoscaled SiO.sub.2 particles and/orb) at least one compound selected from the group consisting of the oxides and hydroxides of the alkali and alkaline earth metals;is applied onto said metallic surface and the resulting coating is thermally densified to form a vitreous layer.
    • PCT No.PCT / EP98 / 02076 Sec。 371 1999年10月8日第 102(e)1999年10月8日PCT PCT 1998年4月9日PCT公布。 公开号WO98 / 45502 日期1998年10月15日公开是为金属表面提供玻璃质层的方法,其具有装饰性和耐刮擦性和腐蚀抑制性。 所述方法的特征在于,通过包括通式(I)的R 1 SiX 4-n(I)的一种或多种硅烷的水解和缩聚的方法获得的涂料组合物,其中基团X彼此相同或不同 是可水解基团或羟基,基团R彼此相同或不同,表示具有至多12个碳原子的氢,烷基,烯基或炔基和具有6至10个碳原子的芳基,芳烷基和烷芳基,以及 n是0,1或2,条件是在a)纳米尺度的SiO 2颗粒和/或b)存在下,使用至少一种n = 1或2的硅烷或由其衍生的低聚物,或b)至少一种选自以下的化合物 由碱金属和碱土金属的氧化物和氢氧化物组成; 施加到所述金属表面上,并将所得涂层热致密化以形成玻璃质层。