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    • 5. 发明授权
    • Water soluble crosslinked ethyleneimine grafted polyamidoamine
    • 水溶性交联乙烯亚胺接枝聚酰胺胺
    • US4371674A
    • 1983-02-01
    • US173479
    • 1980-07-30
    • Otto HertelEmil ScharfJaroslav MelzerRolf Fikentscher
    • Otto HertelEmil ScharfJaroslav MelzerRolf Fikentscher
    • C08G81/00C08G69/48D21H17/55D21H17/56
    • C08G69/48
    • Process for the production of water-soluble auxiliaries for the papermaking industry by reacting(a) 1 part by weight of a polyamidoamine obtained by condensing 1 mole of a dicarboxylic acid having from 4 to 10 carbon atoms with from 0.8 to 1.4 moles of a polyalkylene polyamine having from 3 to 10 alkyleneamine units and containing up to 8 ethyleneimine units per basic nitrogen atom with (b) 0.1 to 4 parts by weight of an .alpha.,.omega.-dichloro polyalkylene oxide obtained by reacting a polyalkylene oxide having from 8 to 100 alkylene oxide units with a compound selected from the group consisting of a thionyl chloride and phosgene and then cleaving the reaction products by heating them to a temperature of from 70.degree. to 150.degree. C. in the presence of a tertiary amine as catalyst,as crosslinking agent, at a temperature above 20.degree. C. in aqueous solution or in a water-soluble organic solvent, the reaction being carried out to a point at which the viscosity of an aqueous solution containing 20% by weight of auxiliary is from 300 to 2,500 mPas.
    • 通过使(a)通过将1重量份通过将1摩尔具有4至10个碳原子的二羧酸缩合得到的聚酰胺胺与0.8至1.4摩尔聚亚烷基二醇来制备用于造纸工业的水溶性助剂的方法 多胺具有3至10个亚烷基胺单元并且每个碱性氮原子含有至多8个亚乙基亚胺单元,和(b)0.1至4重量份通过使具有8至100个亚烷基的聚环氧烷反应获得的α,ω-二氯聚环氧烷 氧化物单元与选自亚硫酰氯和光气的化合物反应,然后在作为催化剂的叔胺的存在下将反应产物加热至70℃至150℃的温度,作为交联剂 在水溶液或水溶性有机溶剂中在20℃以上的温度下进行反应,直至水溶液的粘度为 20重量%的助剂为300至2,500mPas。
    • 10. 发明授权
    • Preparation of ionones
    • 紫罗兰酮的制备
    • US4565894A
    • 1986-01-21
    • US637890
    • 1984-08-06
    • Otto HertelHans KieferLothar Arnold
    • Otto HertelHans KieferLothar Arnold
    • C07C403/16C07C45/61C07C49/21C07C67/00C07C401/00C07C403/00
    • C07C403/16C07C2101/16
    • Ionones are prepared by cyclization of pseudoionone with concentrated sulfuric acid in the presence of an organic solvent or diluent, while cooling, and by dilution of the reaction mixture with water, by a continuous process in which the pseudoionone is combined with an aliphatic or cycloaliphatic hydrocarbon which boils at 25.degree.-65.degree. C. under the reaction conditions, or an aliphatic chlorohydrocarbon, and the sulfuric acid, with thorough mixing and evaporative cooling by partial or complete vaporization of the solvent present in the reaction mixture, combination being effected so that the temperature of the reaction mixture is from 25.degree. to 65.degree. C. and the residence time of this mixture before it is diluted with water is from 0.5 to 20, preferably from 0.1 to 5, seconds.The novel process can be used to prepare .alpha.- and .beta.-ionone in a technically simple and advantageous manner and in very good yields.
    • 紫罗兰酮是通过在有机溶剂或稀释剂的存在下,用浓硫酸环化来制备的,同时冷却,通过用水稀释反应混合物,其中将假性离子与脂族或脂环族烃结合 在反应条件下在25°-65℃下沸腾,或在脂肪族氯代烃和硫酸中,通过部分或完全蒸发存在于反应混合物中的溶剂进行充分混合和蒸发冷却,进行组合,使得 反应混合物的温度为25-65℃,该混合物在用水稀释之前的停留时间为0.5-20秒,优选为0.1-5秒。 该新方法可用于以技术上简单和有利的方式以非常好的产率制备α-和β-丁酮。