Production process of glycolide
    112.
    发明授权
    Production process of glycolide 有权
    乙交酯的生产过程

    公开(公告)号:US08722907B2

    公开(公告)日:2014-05-13

    申请号:US13142012

    申请日:2009-12-09

    IPC分类号: C07D319/00

    CPC分类号: C07D319/12

    摘要: The invention provides a production process of glycolide comprising the respective steps of: Step 1 of heating a mixture containing a glycolic acid oligomer and a high boiling polar organic under normal or reduced pressure to reflux the mixture and at that time, conducting a total reflux operation in a reflux time within a range of 0.1 to 20 hours under conditions that substantially the whole amount of a distillate distilled out of a reflux system containing the mixture is refluxed into the reflux system; Step 2 of heating the mixture after the total reflux operation or a mixture obtained by adding the high boiling polar organic solvent to a glycolic acid oligomer component recovered from the mixture after the total reflux operation to conduct depolymerization; and Step 3 of collecting glycolide from a co-distillate.

    摘要翻译: 本发明提供了一种乙交酯的制备方法,其包括以下各步骤:步骤1,在正常或减压下加热含有乙醇酸低聚物和高沸点极性有机物的混合物以回流混合物,并且此时进行总的回流操作 在从含有该混合物的回流系统蒸馏出的基本上全部量的馏出物回流至回流系统的条件下,在0.1至20小时的范围内的回流时间内, 在全部回流操作之后加热混合物的步骤2或通过在完全回流操作后从混合物中回收的乙醇酸低聚物组分加入高沸点极性有机溶剂而获得的混合物进行解聚; 和从共馏出物收集乙交酯的步骤3。

    Process for production of cross copolymers, cross copolymers obtained by the process, and use thereof
    113.
    发明授权
    Process for production of cross copolymers, cross copolymers obtained by the process, and use thereof 有权
    用于生产交联共聚物的方法,通过该方法获得的交联共聚物及其用途

    公开(公告)号:US08722831B2

    公开(公告)日:2014-05-13

    申请号:US12302818

    申请日:2007-05-29

    摘要: To provide a novel cross copolymer and resin composition which are improved in heat resistance and compatibility over conventional ethylene/aromatic vinyl compound copolymers and which have low crystallinity, are excellent in softness, transparency and compatibility and show mechanical properties similar to soft vinyl chloride resins, as compared with conventional cross copolymers.A process for producing a cross copolymer, which comprises a coordination polymerization step and a subsequent anionic polymerization step, wherein in the coordination polymerization step, copolymerization of an olefin monomer, an aromatic vinyl compound monomer and an aromatic polyene is carried out by using a single-site coordination polymerization catalyst to synthesize an olefin/aromatic vinyl compound/aromatic polyene copolymer, and then, in the anionic polymerization step, polymerization is carried out in the coexistence of such an olefin/aromatic vinyl compound/aromatic polyene copolymer and an anionic polymerizable vinyl compound monomer by using an anionic polymerization initiator.

    摘要翻译: 为了提供与常规乙烯/芳族乙烯基化合物共聚物相比耐热性和相容性提高并且结晶度低的新型交联共聚物和树脂组合物,其柔软性,透明性和相容性优异,并且具有类似于软氯乙烯树脂的机械性能, 与常规交联共聚物相比。 一种制备交联共聚物的方法,其包括配位聚合步骤和随后的阴离子聚合步骤,其中在配位聚合步骤中,烯烃单体,芳族乙烯基化合物单体和芳族多烯的共聚通过使用单 - 配位聚合催化剂合成烯烃/芳族乙烯基化合物/芳族多烯共聚物,然后在阴离子聚合步骤中,聚合是在这种烯烃/芳族乙烯基化合物/芳族多烯共聚物和阴离子可聚合的共聚物共存的情况下进行的 乙烯基化合物单体。

    Iron arsenate powder
    118.
    发明授权
    Iron arsenate powder 有权
    砷酸铁粉

    公开(公告)号:US08075868B2

    公开(公告)日:2011-12-13

    申请号:US12672693

    申请日:2008-08-22

    IPC分类号: C22B30/00

    摘要: There is provided an iron arsenate powder which is produced from an arsenic containing solution and wherein the concentration of arsenic eluted or released from the powder is very low. The iron arsenate powder is a powder of dihydrate of iron arsenate, which has a crystal structure of rhombic system and which has lattice constants of a=0.8950 to 0.8956 nm, b=1.0321 to 1.0326 nm and c=1.0042 to 1.0050 nm at room temperatures and atmospheric pressure. The iron arsenate powder can be produced by a method comprising the steps of: adding ferrous ions to an arsenic containing solution to cause the molar ratio (Fe/As) of iron to arsenic in the solution to be not lower than 1; adding an oxidizing agent to the solution; heating the solution to a temperature of not lower than 70° C. while stirring the solution, to allow a reaction; and carrying out a solid-liquid separation to wash the obtained solid part.

    摘要翻译: 提供了由含砷溶液制备的砷酸铁粉末,其中从粉末中洗脱或释放的砷的浓度非常低。 砷酸铁粉末是砷酸铁的二水合物的粉末,其具有菱形体系的晶体结构,其晶格常数为a = 0.8950〜0.8956nm,b = 1.0321〜1.0326nm,c = 1.0042〜1.0050nm,室温 和大气压力。 所述砷酸铁粉末可以通过以下方法制造:将亚铁离子添加到含砷溶液中,使得所述溶液中的铁与砷的摩尔比(Fe / As)为1以上; 向溶液中加入氧化剂; 在搅拌溶液的同时将溶液加热至不低于70℃的温度,以进行反应; 并进行固液分离以洗涤所获得的固体部分。

    Liquid droplet jetting apparatus
    120.
    发明授权
    Liquid droplet jetting apparatus 有权
    液滴喷射装置

    公开(公告)号:US07914103B2

    公开(公告)日:2011-03-29

    申请号:US12411296

    申请日:2009-03-25

    IPC分类号: B41J29/38

    摘要: In a liquid droplet jetting mode of jetting liquid droplets, a controller controls a piezoelectric actuator to perform a liquid droplet jetting operation in which volume of a pressure chamber is decreased to a decreased volume smaller than a predetermined volume, and then the volume of the pressure chamber is increased to an increased volume greater than the predetermined volume, and the volume of the pressure chamber is again decreased to the decreased volume. On the other hand, in a warm-up mode of heating the liquid in the pressure chamber, the controller controls the piezoelectric actuator to perform at least one of a first warm-up operation in which the volume of the pressure chamber is changed repeatedly between the predetermined volume and the increased volume, and a second warm-up operation in which the volume of the pressure chamber is changed repeatedly between the predetermined volume and the decreased volume.

    摘要翻译: 在喷射液滴的液滴喷射模式中,控制器控制压电致动器以执行液滴喷射操作,其中压力室的体积减小到小于预定体积的体积减小,然后压力体积 室增加到大于预定体积的增加的体积,并且压力室的体积再次减小到减小的体积。 另一方面,在加热压力室中的液体的预热模式中,控制器控制压电致动器执行第一预热操作中的至少一个,其中压力室的容积在 预定体积和增加的体积,以及第二预热操作,其中压力室的体积在预定体积和体积减小之间重复地改变。