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    • 3. 发明公开
    • FIXED BED DECOLORIZATION PROCESS FOR UNSATURATED FATTY ACID
    • 不饱和脂肪酸的固定床脱色工艺
    • EP3202876A1
    • 2017-08-09
    • EP15840668.6
    • 2015-09-09
    • Zhejiang Medicine Co., Ltd. Xinchang Pharmaceutical Factory
    • XIANG, XuebingXU, XindeSHAO, BinLI, Chong
    • C11B3/00
    • A23L5/49A23L33/12A23V2002/00C11B3/00C11B3/10
    • The present invention relates to a fixed bed decolorization process for an polyunsaturated fatty acid, comprising a polyunsaturated fatty acid or a polyunsaturated fatty acid solution is either passed directly through a filler of the fixed bed or recycled in a filler of the fixed bed, a colorless or light-colored polyunsaturated fatty acid product is ultimately produced, at the same time, other than the color, other qualities of the polyunsaturated fatty acid remain unaffected. The decolorization process allows continuous operation or intermittent operation. The filler of the fixed bed comprises one or a mixture of activated carbon, diatomite, carclazyte, silicone and an ion-exchange resin. An upper or a middle or a bottom or a combination thereof is employed to feed a polyunsaturated fatty acid feedstock or a polyunsaturated fatty acid solution. The filler in the fixed bed can be used repeatedly. The filler can be reused after being washed when decolorization effects thereof become deteriorated or ineffective.
    • 本发明涉及用于多不饱和脂肪酸的固定床脱色方法,其包含多不饱和脂肪酸或多不饱和脂肪酸溶液直接通过固定床的填料或循环到固定床的填料中,无色 或最终产生浅色多不饱和脂肪酸产物,同时,除了颜色之外,多不饱和脂肪酸的其他品质不受影响。 脱色过程允许连续操作或间歇操作。 固定床的填料包含活性炭,硅藻土,carlozyte,硅酮和离子交换树脂中的一种或混合物。 采用上部或中部或底部或其组合来供给多不饱和脂肪酸原料或多不饱和脂肪酸溶液。 固定床中的填充物可以重复使用。 当其脱色效果变差或无效时,填料可以在清洗后重新使用。
    • 9. 发明公开
    • METHOD FOR SYNTHESIZING 2,7-DIMETHYL-2,4,6-OCTATRIENE-1,8-DIALDEHYDE
    • VERFAHREN ZUR SYNTHESE VON 2,7-二甲基-2,4,6-OCTATRIEN-1,8-DIALDEHYD
    • EP2799420A1
    • 2014-11-05
    • EP12863035.7
    • 2012-12-10
    • Nanjing University Of TechnologyZhejiang Medicine Co., Ltd. Xinchang Pharmaceutical Factory
    • CHEN, JianhuiLV, ChunleiPI, ShiqingLU, DingqiangOUYANG, Pingkai
    • C07C45/52C07C47/21
    • C07C45/42C07C1/324C07C41/06C07C41/18C07C41/22C07C45/52C07F9/38C07C47/21
    • Provided in the present invention is a method for synthesizing 2,7-dimethyl-2,4,6-octatriene-1,8-dialdehyde. The synthesis method comprises the following steps: (1) adding acetaldehyde diethyl acetal and ethyl-(1-propenyl)-ether under the effect of a catalyst to produce 1,1,3-triethoxy-2-methyl-butane; (2) pyrolysis synthesizing 1,1,3-triethoxy-2-methyl-butane under the catalytic effects of isoquinoline and p-Toluenesulfonic acid to produce 1-methoxy-2-methyl-1,3-butadiene; (3) dissolving 1-methoxy-2-methyl-1,3-butadiene in anhydrous ethanol solvent for synthesis with a phase transfer catalyst, cetyl-trimethyl ammonium bromide, and a chlorinating agent, trichloroisocyanuric acid, to generate 4,4-diethoxy-3-methyl-1- chloro-butene; (4) combining 4,4-diethoxy-3-methyl-1-chloro-butene with a triphenylphosphine salt to produce a phosphonium salt; and (5) condensing the phosphonium salt under the effects of hydrogen peroxide in conjunction with sodium carbonate solution to generate 1,1,8,8-tetramethyl-2,7-dimethyl-2,4,6-octatriene; then hydrolyzing under acidic conditions to synthesize 2,7-dimethyl-2,4,6-octatriene-1,8- dialdehyde. The present invention has a simple process route, is easy to operate, and has mild conditions, great yield, and great industrial value.
    • 本发明提供了合成2,7-二甲基-2,4,6-辛二烯-1,8-二醛的方法。 合成方法包括以下步骤:(1)在催化剂作用下加入乙醛缩二乙醇和乙基(1-丙烯基) - 醚,制得1,1,3-三乙氧基-2-甲基 - 丁烷; (2)在异喹啉和对甲苯磺酸的催化作用下热解合成1,1,3-三乙氧基-2-甲基 - 丁烷,得到1-甲氧基-2-甲基-1,3-丁二烯; (3)将1-甲氧基-2-甲基-1,3-丁二烯溶于无水乙醇溶剂中,用相转移催化剂,十六烷基三甲基溴化铵和氯化剂三氯异氰脲酸合成,得到4,4-二乙氧基 -3-甲基-1-氯 - 丁烯; (4)将4,4-二乙氧基-3-甲基-1-氯 - 丁烯与三苯基膦盐结合以产生鏻盐; 和(5)在过氧化氢与碳酸钠溶液的作用下将鏻盐缩合,生成1,1,8,8-四甲基-2,7-二甲基-2,4,6-辛三烯; 然后在酸性条件下水解合成2,7-二甲基-2,4,6-辛二烯-1,8-二醛。 本发明工艺路线简单,操作方便,条件温和,产量大,工业价值高。