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    • 3. 发明授权
    • Preparation of organosiloxanes
    • 有机硅氧烷的制备
    • US4060537A
    • 1977-11-29
    • US747262
    • 1976-12-03
    • Gunther MaassHans Joachim LuckingWerner BuchnerBruno Degen
    • Gunther MaassHans Joachim LuckingWerner BuchnerBruno Degen
    • C08G77/00C07F7/08C07F7/18C07F7/21C08G77/06
    • C07F7/21C07F7/0874
    • In the preparation of cyclic and linear organosiloxanes by reacting an organohalogenosilane with a compound of the formulaROR'in whichR is an alkyl radical with 1-4 C atoms, andR' is hydrogen or an alkyl radical with 1-4 C atoms,The improvement which comprises effecting the reaction in an aqueous solution of a Lewis acid. Preferably the organohalogenosilane is a di- or tri-organo-chloro or -bromo-silane wherein the organo radical is selected from the group consisting of alkyl or alkenyl of up to 4 C atoms or aryl, especially dimethyldichlorosilane, and the Lewis acid is a 40-90% solution of ZnCl.sub.2, FeCl.sub.3, CdCl.sub.2 or H.sub.2 SO.sub.4. Advantageously ROR' is methanol, ethanol, propanol, dimethyl ether or diethyl ether.
    • 在通过有机卤代硅烷与式ROR'的化合物(其中R是具有1-4个C原子的烷基,R'是氢或具有1-4个C原子的烷基)反应制备环状和线性有机硅氧烷的过程中, 其包含在路易斯酸的水溶液中影响反应的改进。 优选地,有机卤代硅烷是二 - 或三 - 有机氯或溴 - 硅烷,其中有机基团选自由高达4个C原子的烷基或烯基或芳基,特别是二甲基二氯硅烷组成的组,路易斯酸是 40-90%的ZnCl2,FeCl3,CdCl2或H2SO4溶液。 有利的是ROR是甲醇,乙醇,丙醇,二甲醚或乙醚。
    • 4. 发明授权
    • Production of non-stick coatings
    • 生产不粘涂料
    • US4202929A
    • 1980-05-13
    • US949316
    • 1978-10-06
    • Armand de MontignyHans ToepschWerner Buchner
    • Armand de MontignyHans ToepschWerner Buchner
    • C08J7/04B05D5/08B05D7/04B05D7/24B32B27/00C08G18/61C08G77/388C08L83/04D21H19/32C08G47/02B32B9/04
    • D21H19/32C08G18/61C08G77/388C08L83/04C08G77/16C08G77/24Y10S528/901Y10T428/31663
    • In the production of non-adherent coated paper substrate by applying to the substrate a solvent-containing mixture comprising (A) an .alpha.,.omega.-polyorganosiloxanediol, (B) an organosiloxane containing Si-H groups, (C) an alkyl- or alkenyl-triacetoxysiloxane, (D) an organic isocyanate with more than two isocyanate radicals and (E) a hardening catalyst, and then heating the substrate to harden the coating, the improvement which comprises including in the mixture applied to the substrate a reaction product (F) of a chloromethylpolymethylsiloxane of the formulaClCH.sub.2 (CH.sub.3).sub.2 Si[OSi(CH.sub.3)CH.sub.2 Cl].sub.n OSi(CH.sub.3).sub.2 Clwherein n is from 2 - about 200, with at most an equivalent molar amount of a primary alkyl, alkenyl or cycloalkyl amine with about 4-18 carbon atoms, e.g. butylamine, hexylamine, cyclohexylamine, 2-ethylhexylamine and allylamine. The coating hardens in a very short time in a drying oven but at normal temperatures the mass has a relatively long pot life.
    • 在通过向基材施加含有(A)α,ω-聚有机硅氧烷二醇,(B)含Si-H基的有机硅氧烷,(C)烷基 - 或烯基 (D)具有多于两个异氰酸酯基团的有机异氰酸酯和(E)硬化催化剂,然后加热基材以使涂层硬化,其改进包括在施加到基材上的混合物中加入反应产物(F )式ClCH 2(CH 3)2 Si [OSi(CH 3)CH 2 Cl] nOSi(CH 3)2 Cl的氯甲基聚甲基硅氧烷,其中n为2-约200,最多等摩尔量的伯烷基,烯基或环烷基胺与 约4-18个碳原子,例如 丁胺,己胺,环己胺,2-乙基己基胺和烯丙胺。 涂层在干燥炉中在很短的时间内硬化,但在常温下,使用寿命较长。