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    • 5. 发明授权
    • Apparatus for withdrawing gas from heat exchanger having exchanger tubes
and method of withdrawing gas by the apparatus
    • 用于从具有交换器管的热交换器抽出气体的装置和由该装置取出气体的方法
    • US4219070A
    • 1980-08-26
    • US946150
    • 1978-09-27
    • Masahiro KurokawaNoriyuki OdaNobuji Shibamoto
    • Masahiro KurokawaNoriyuki OdaNobuji Shibamoto
    • F28B9/10F28D15/02F28D15/00
    • F28D15/0275F28B9/10F28D15/0258Y10S165/917Y10T29/4935
    • An apparatus for removing non-condensable gas accumulated in the exchanger tubes of a heat exchanger. A vertically elongated tank having retained in its lower portion a liquefied working medium for the exchanger tubes is provided beside the heat exchanger. The tank communicates as its lower portion with the lower ends of the tubes and at its upper portion with the upper ends of the tubes by lines each provided with a valve. A gas release pipe extends downward from outside into the upper portion of the tank through the tank wall. A working medium condensing cooling tube is provided in the upper portion of the tank. The interior of the tank is partitioned into a condensing tank and a tank main body positioned therebelow and having an upper portion communicating with the upper portion of the condensing tank and a lower portion communicating with the lower portion of the condensing tank. The non-condensable gas is withdrawn from the exchanger tubes in portions of progressively increasing pressure and led into the tank, and the gas is released from the tank to the atmosphere through the release pipe after the gas has been withdrawn from all the tubes.
    • 一种用于除去积聚在热交换器的换热器管中的不可冷凝气体的装置。 在热交换器的旁边设置有在其下部保持用于交换器管的液化工作介质的垂直细长槽。 罐的下部与管的下端连通,并且在其上部,管的上端通过各自设置有阀的管线连通。 气体释放管通过罐壁从外部向下延伸到罐的上部。 在罐的上部设有工作介质冷凝冷却管。 罐的内部被分隔成冷凝罐和位于其下方的罐主体,并且具有与冷凝罐的上部连通的上部和与冷凝罐的下部连通的下部。 不可冷凝气体在逐渐增加的压力部分被从交换器管中取出并导入罐中,并且在气体从所有管中排出之后,气体通过释放管从罐释放到大气中。
    • 7. 发明授权
    • Polyester based resin composition and molded product therefrom
    • 聚酯类树脂组合物及其成型品
    • US06740376B2
    • 2004-05-25
    • US10153619
    • 2002-05-24
    • Dai OguroTakeo HayashiTakeshi HirokaneMasahiro Kurokawa
    • Dai OguroTakeo HayashiTakeshi HirokaneMasahiro Kurokawa
    • C08I7700
    • C08L77/02C08L67/02C08L67/025C08L77/00C08L77/06Y10T428/1352C08L2666/14C08L2666/18C08L67/00
    • There is disclosed A polyester based resin composition (D) which comprises a polyamide resin (A) and a polyester resin (B), or a polyamide resin (A), a polyester resin (B) and a polyethylene terephthalate resin (C), characterized in that the polyester resin (B) is obtained by polycondensation of a dicarboxylic acid component containing 0.5 to 60 mol % of a dicarboxylic acid having a cyclic acetal skeleton and/or a diol component containing 0.5 to 60 mol % of a diol having a cyclic acetal skeleton, and that the blending proportions of the polyamide resin (A), the polyester resin (B) and the polyethylene terephthalate resin (C) are each in the range of 1 to 99% by weight, 1 to 99% by weight and 0 to 98% by weight, respectively on the basis of total sum weight of the components (A), (B) and (C). There is further disclosed a molded product (film, sheet, thin wall hollow container, etc.). The above polyester based resin composition and a product molded therefrom are each excellent in transparency color tone, gas barrier properties, pinhole resistance and mechanical performance.
    • 公开了包含聚酰胺树脂(A)和聚酯树脂(B)或聚酰胺树脂(A),聚酯树脂(B)和聚对苯二甲酸乙二醇酯树脂(C)的聚酯类树脂组合物(D) 其特征在于,所述聚酯树脂(B)通过含有0.5〜60摩尔%的具有环状缩醛骨架的二羧酸的二羧酸成分和/或含有0.5〜60摩尔%的二醇的二醇的缩聚得到,所述二醇具有 环状缩醛骨架,聚酰胺树脂(A),聚酯树脂(B)和聚对苯二甲酸乙二醇酯树脂(C)的配合比例分别为1〜99重量%,1〜99重量% (A),(B)和(C)的总和重量分别为0〜98重量%。 进一步公开了成型品(膜,片,薄壁中空容器等)。 上述聚酯类树脂组合物和由其模塑的产品具有优异的透明色调,阻气性,针孔性和机械性能。
    • 9. 发明授权
    • Process for producing glycidyl acrylate or glycidyl methacrylate
    • 制备丙烯酸缩水甘油酯或甲基丙烯酸缩水甘油酯的方法
    • US5527927A
    • 1996-06-18
    • US438345
    • 1995-05-10
    • Masahiro KurokawaAkihiro HonmaTsuyoshi Isozaki
    • Masahiro KurokawaAkihiro HonmaTsuyoshi Isozaki
    • C07D301/32B01J27/26B01J31/02C07B61/00C07D303/16C07D301/00C07D301/36
    • C07D303/16
    • There are disclosed a process for producing glycidyl acrylate or glycidyl methacrylate by the transesterification of glycidol and methyl methacrylate, etc. which process comprises carrying out the transesterification in the presence of a polymerization inhibitor by using, as a catalyst, a quaternary ammonium salt represented by the general formula (I) or a quaternary phosphonium salt represented by the general formula (II)(R.sup.1 R.sup.2 R.sup.3 R.sup.4)NX (I)(R.sup.1 R.sup.2 R.sup.3 R.sup.4)PX (II)wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each an alkyl group having 1 to 20 carbon atoms, or the like, and X is a cyanide ion, cyanate ion or the like to complete the reaction; thereafter arresting the reaction by adding a catalyst deactivator represented by the general formula (III)SB (iii)wherein S is a sulfonic acid or a heteropolyacid and B is an alkali metal excluding potassium or an alkaline earth metal; and distilling away unreacted methyl methacrylate, etc. under reduced pressure and two similar modified processes. The processes can produce highly pure glycidyl methacrylate, etc. substantially free from a chlorine component and the processes can enhance the conversion of glycidol without lowering the purity and yield of the objective product.
    • 公开了通过缩水甘油和甲基丙烯酸甲酯等的酯交换反应生产丙烯酸缩水甘油酯或甲基丙烯酸缩水甘油酯的方法,该方法包括在聚合抑制剂存在下进行酯交换反应,所述方法是使用作为催化剂的季铵盐 通式(I)或由通式(II)表示的季鏻盐(R1R2R3R4)NX(Ⅰ)(R1R2R3R4)PX(Ⅱ)其中R1,R2,R3和R4各自为1〜20的烷基 碳原子等,X是氰离子,氰酸根离子等,以完成反应; 然后通过加入由通式(III)SB(ⅲ)表示的催化剂失活剂来阻止反应,其中S是磺酸或杂多酸,B是不包括钾或碱土金属的碱金属; 并在减压下蒸馏未反应的甲基丙烯酸甲酯等,并进行两种类似的改性方法。 该方法可以产生基本上不含氯组分的高纯度甲基丙烯酸缩水甘油酯等,并且该方法可以增加缩水甘油的转化,而不降低目标产物的纯度和产率。