PRODUCTION METHOD FOR 1,4-BUTANEDIOL
    3.
    发明申请
    PRODUCTION METHOD FOR 1,4-BUTANEDIOL 审中-公开
    1,4-丁二醇的生产方法

    公开(公告)号:US20150087038A1

    公开(公告)日:2015-03-26

    申请号:US14560714

    申请日:2014-12-04

    Abstract: An object of the present invention is to provide high-quality 1,4BG capable of working out to a raw material of PBT with good color tone, by efficiently removing and refining impurities mixed when producing a biomass-derived 1,4BG on an industrial scale and the present invention relates to a production method of refined 1,4BG, where a crude 1,4BG-containing solution is obtained from refined raw material 1,4BG obtained by removing bacterial cells, salt contents and water from the fermentation culture medium, through a step of removing high-boiling-point components and/or low-boiling-point components by distillation and/or a step of converting an unsaturated compound to a hydride and the target product is obtained as a side stream in a further distillation step.

    Abstract translation: 本发明的目的是提供一种能够通过在工业规模生产生物质衍生的1,4BG时有效地除去和精制混合的杂质来提供具有良好色调的PBT原料的高质量的1,4BG 本发明涉及精制的1,4BG的制造方法,其中,通过从发酵培养基中除去细菌细胞,盐含量和水,通过从精制原料1,4BG获得粗制的含1,4BG的溶液,通过 通过蒸馏除去高沸点组分和/或低沸点组分的步骤和/或将不饱和化合物转化为氢化物的步骤,并在另外的蒸馏步骤中作为副产物获得目标产物。

    METHOD FOR PRODUCING FURAN COMPOUND AND FURFURAL COMPOSITION

    公开(公告)号:US20180009774A1

    公开(公告)日:2018-01-11

    申请号:US15712844

    申请日:2017-09-22

    CPC classification number: C07D307/36 B01J23/58 C07B61/00 C07D307/48

    Abstract: The present invention is aimed to provide an industrially advantageous method for producing a furan compound, in which a furan compound can be efficiently obtained in a high selectivity from a furfural compound. The present invention is concerned with a method for producing a furan compound including feeding, as a raw material, a furfural composition containing a furfural compound into a reactor and subjecting to a decarbonylation reaction in the presence of a catalyst to obtain a furan compound as a product, wherein a furfural dimer concentration in the furfural composition is 1,000 ppm by weight or less, and a peroxide value in the furfural composition is 0.01 mEq/kg or more and 1.0 mEq/kg or less.

    METHOD FOR PRODUCING POLYCARBONATE DIOL, POLYCARBONATE DIOL AND POLYURETHANE USING SAME
    5.
    发明申请
    METHOD FOR PRODUCING POLYCARBONATE DIOL, POLYCARBONATE DIOL AND POLYURETHANE USING SAME 审中-公开
    使用聚碳酸酯二醇,聚碳酸酯二醇和聚氨酯的方法

    公开(公告)号:US20170073466A1

    公开(公告)日:2017-03-16

    申请号:US15359071

    申请日:2016-11-22

    Abstract: The present invention relates to a method for producing a polycarbonate diol, comprising subjecting a compound represented by the following formula (A) containing from 0.01 to 1.0 wt % of an aldehyde derivative, a compound represented by the following formula (B), and a carbonate compound to polycondensation by a transesterification reaction in the presence of a catalyst to produce a polycarbonate diol having a number average molecular weight of 250 to 5,000: HO—(CH2)10—OH  (A) HO—R1—OH  (B) wherein in the formula (B), R1 represents a substituted or unsubstituted divalent alkylene group having a carbon number of 3 to 20, wherein the compound of the formula (A) is not included by the formula (B).

    Abstract translation: 式(B)中,R 1表示碳数为3〜20的取代或未取代的二价亚烷基,式(A)的化合物不包括在式(B)中。

    METHOD FOR PRODUCING TETRAHYDROFURAN
    10.
    发明申请
    METHOD FOR PRODUCING TETRAHYDROFURAN 有权
    生产四氢呋喃的方法

    公开(公告)号:US20140179935A1

    公开(公告)日:2014-06-26

    申请号:US14147932

    申请日:2014-01-06

    CPC classification number: C07D307/08 B01D3/002 B01D3/009

    Abstract: The present invention is concerned with a method for producing tetrahydrofuran including carrying out a dehydration cyclization reaction of 1,4-butanediol in the presence of an acid catalyst having a pKa value of not more than 4 within a reactor, wherein a raw material liquid containing 1,4-butanediol to be provided for the reaction contains from 0.01 to 0.35% by weight of 2-(4-hydroxybutoxy)-tetrahydrofuran and 1 ppm by weight or more and not more than 1,000 ppm by weight of at least one of an amine and an amide in terms of a concentration as converted into a nitrogen atom.

    Abstract translation: 本发明涉及一种生产四氢呋喃的方法,包括在反应器内在pKa值不大于4的酸催化剂存在下进行1,4-丁二醇的脱水环化反应,其中含有 为反应提供的1,4-丁二醇含有0.01至0.35重量%的2-(4-羟基丁氧基) - 四氢呋喃和1重量ppm以上且不大于1,000重量ppm的至少一种 胺和酰胺换算为氮原子的浓度。

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