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    • 2. 发明授权
    • Modified normally liquid, water-soluble polyoxyalkylene polyamines
    • 改性常规液体,水溶性聚氧化烯多胺
    • US5103062A
    • 1992-04-07
    • US36955
    • 1987-04-10
    • Michael CuscuridaErnest L. Yeakey
    • Michael CuscuridaErnest L. Yeakey
    • C08G65/32C07C209/16C08G65/28
    • C07C209/16
    • In accordance with the process of the present invention normally liquid, water-soluble poly(oxyethylene/oxypropylene) polyamine products are prepared using an initiator, which may contain oxyethylene groups. In a series of alkoxylation reaction steps the initiator is reacted with predetermined weight percentages of ethylene oxide and propylene oxide, said process comprising the steps of:a. Charging a predetermined percentage of initiator to an alkoxylation reaction zone,b. Alkoxylating said initiator therein with predetermined percentages of ethylene oxide and propylene oxide to provide an intermediate polyol,c. Propoxylating said intermediate polyol with a predetermined percentage of propylene oxide to provide a normally liquid, water-soluble precursor polyol, andd. Catalytically reductively aminating said precursor polyol in the presence of a reductive amination catalyst in a reaction zone under reductive amination conditions in the presence of ammonia and hydrogen to provide said water-soluble poly(oxyethylene/oxypropylene) polyamine product.
    • 根据本发明的方法,通常使用可含有氧乙烯基的引发剂来制备通常为水溶性的聚(氧乙烯/氧丙烯)多胺产物。 在一系列烷氧基化反应步骤中,引发剂与预定重量百分比的环氧乙烷和环氧丙烷反应,所述方法包括以下步骤:a。 将预定百分比的引发剂装入烷氧基化反应区,b。 用预定百分比的环氧乙烷和环氧丙烷对所述引发剂进行烷氧基化以提供中间体多元醇,c。 用预定百分比的环氧丙烷丙氧基化所述中间体多元醇以提供通常为液体的水溶性前体多元醇,和d。 在还原胺化条件下,在氨和氢的存在下,在还原胺化催化剂存在下,在反应区域催化还原胺化所述前体多元醇,以提供所述水溶性聚(氧乙烯/氧丙烯)多胺产物。
    • 9. 发明授权
    • Production of 2-substituted-1,3-dioxolanes from 1,3-dioxolane and
formaldehyde
    • 由1,3-二氧戊环和甲醛生产2-取代-1,3-二氧戊环
    • US4628108A
    • 1986-12-09
    • US683548
    • 1984-12-19
    • John R. SandersonErnest L. Yeakey
    • John R. SandersonErnest L. Yeakey
    • C07D317/20C07D317/22C07D317/00
    • C07D317/22C07D317/20
    • It has been surprisingly discovered in accordance with the present invention that when 1,3-dioxolane is reacted with formaldehyde in the presence of an organic peroxide and an ionizable, at least sparingly soluble metal salt, the reaction preferentially involves an addition of the formaldehyde to the 2-methylene group of the 1,3-dioxolane with only minor reaction with the 4-methylene and 5-methylene groups of the 1,3-dioxolane whereby the reaction product that is formed contains significant quantities of 2-hydroxyalkyl-1,3-dioxolanes. 2-Hydroxyalkyl-1,3-dioxolanes are hydrolyzed with comparative ease to ethylene glycol and the corresponding glycol aldehyde (CHO--CH.sub.2 --OH). The glycol aldehyde in turn can be catalytically hydrogenated to form additional quantities of ethylene glycol.
    • 根据本发明令人惊奇地发现,当1,3-二氧戊环与有机过氧化物和可电离的至少微溶的金属盐存在下,甲醛反应时,反应优先包括将甲醛加入到 1,3-二氧戊环的2-亚甲基与1,3-二氧戊环的4-亚甲基和5-亚甲基仅有很小的反应,由此形成的反应产物含有大量的2-羟基烷基-1, 3-二氧戊环。 相对于乙二醇和相应的二醇醛(CHO-CH2-OH),2-羟基烷基-1,3-二氧戊环水解。 二醇醛依次可以被催化氢化以形成额外量的乙二醇。