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1134 条记录 (耗时 0.033 秒)

    Process for production of oxymethylene copolymer
    1.
    发明授权
    Process for production of oxymethylene copolymer 有权

    公开(公告)号：US10138321B2

    公开(公告)日：2018-11-27

    申请号：US15532266

    申请日：2015-12-01

    申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.

    发明人： Daigo Nakaya ,  Toru Takahashi ,  Satoshi Mochida ,  Kensuke Oshima

    IPC分类号： C08G2/00 ,  C08G2/10 ,  C08G2/28

    摘要： The invention provides a method for producing an oxymethylene copolymer including a polymerization step for cationically polymerizing trioxane and a comonomer at a polymerization temperature of from 135 to 300° C. in the presence of at least one salt of a protonic acid having a molecular weight of 1,000 or less, and at least one polymerization initiator selected from the group consisting of protonic acids having a molecular weight of 1,000 or less, protonic acid anhydrides having a molecular weight of 1,000 or less, and protonic acid ester compounds having a molecular weight of 1,000 or less; wherein the total concentration of metal components contained in the trioxane and comonomer used in the polymerization step is 300 ppb by mass or less.

    Method for producing polyacetal copolymer
    5.
    发明授权
    Method for producing polyacetal copolymer 有权
    聚缩醛共聚物的制备方法

    公开(公告)号：US09550853B2

    公开(公告)日：2017-01-24

    申请号：US14786246

    申请日：2014-04-04

    申请人： Polyplastics Co., Ltd.

    发明人： Tomohiro Monma ,  Eiji Masuda ,  Shoji Sanada

    IPC分类号： C08G2/12 ,  C08G2/10 ,  C08G2/06 ,  C08G2/22 ,  C08G4/00 ,  C08L59/04 ,  C08G2/00

    CPC分类号： C08G2/12 ,  C08G2/06 ,  C08G2/10 ,  C08G2/22 ,  C08G4/00 ,  C08L59/04

    摘要： A high-quality polyacetal copolymer produced by a simple process and in an economical manner. The method includes supplying a raw material including trioxane or the like to a reaction device; obtaining a reaction mixture by carrying out a polymerization reaction of the raw material in the state where the rotating shafts are inclined by 1 to 6° upwards with respect to the horizontal direction H from the introduction opening towards a polyacetal copolymer recovery portion; vaporizing and separating an unreacted monomer from the reaction mixture using a vaporization and separation portion; re-supplying the unreacted monomer to the reaction device; and recovering the polyacetal copolymer from the reaction using a polyacetal copolymer recovery portion.

    摘要翻译： 通过简单的工艺和经济的方式生产的高品质聚缩醛共聚物。 该方法包括将三恶烷等的原料供给反应装置; 通过在旋转轴相对于从引入口朝向聚缩醛共聚物回收部的水平方向H向上倾斜1〜6度的状态下进行原料的聚合反应来获得反应混合物; 使用蒸发和分离部分从反应混合物中蒸发和分离未反应的单体; 将未反应的单体再供给到反应装置中; 并使用聚缩醛共聚物回收部分从反应中回收聚缩醛共聚物。

    Low dielectric constant polymer containing dinaphthyl and hexafluorocyclobutyl ether unit, preparation method and use
    6.
    发明授权
    Low dielectric constant polymer containing dinaphthyl and hexafluorocyclobutyl ether unit, preparation method and use 有权
    含有二萘基和六氟环丁基醚单元的低介电常数聚合物，制备方法和用途

    公开(公告)号：US09518151B2

    公开(公告)日：2016-12-13

    申请号：US14785522

    申请日：2013-11-20

    申请人： SHANGHAI INSTITUTE OF ORGANIC CHEMISTRY, CHINESE ACADEMY OF SCIENCES

    发明人： Qiang Fang ,  Chao Yuan ,  Kaikai Jin ,  Yingchun Liu ,  Shen Diao ,  Kai Li

    IPC分类号： C08G65/38 ,  C08G65/40 ,  C07C41/30 ,  C08G61/12 ,  H01L51/05 ,  C07C41/16 ,  C07C41/24 ,  C07C41/09 ,  C07C43/247 ,  C09D171/12 ,  C08G2/00

    CPC分类号： C08G65/40 ,  C07C41/09 ,  C07C41/16 ,  C07C41/24 ,  C07C41/30 ,  C07C43/247 ,  C07C2601/04 ,  C08G61/12 ,  C08G65/007 ,  C08G65/4025 ,  C08G65/4075 ,  C08G65/4093 ,  C08G2261/146 ,  C08G2261/344 ,  C08G2261/43 ,  C08G2261/65 ,  C09D171/12 ,  H01L51/052 ,  C07C43/225

    摘要： The present invention belongs to the field of preparation of high performance polymers, and specifically relates to a low dielectric constant polymer containing dinaphthyl and hexafluorocyclobutyl ether units, and preparation method and use thereof. The polymer is prepared as follows: under the effect of an alkali, 1-naphthol bromotetrafluoroethane ether is prepared from 1-naphthol and tetrafluorodibromoethane in an organic solvent, and then reduced by a zinc powder so as to obtain 1-naphthol trifluorovinyl ether. 1-naphthol trifluorovinyl ether is treated at a high temperature to obtain a bisnaphthol hexafluorocyclobutyl ether monomer. The monomer is subjected to oxidative coupling in the presence of ferric trichloride so as to obtain a thermal polymer containing dinaphthyl and hexafluorocyclobutyl structural units with a good film-forming property, and in a nitrogen atmosphere, the temperature for 5% weight loss (Td5%) of the obtained film is 437° C., and the carbon residue yield at 1000° C. is 54.24%. The dielectric constant (30 MHz) of the film is 2.33. The polymer is suitable for use in the electronic and electrical industries as an insulation coating layer and an encapsulating material for electron components.

    摘要翻译： 本发明属于高性能聚合物的制备领域，具体涉及含有二萘基和六氟环丁基醚单元的低介电常数聚合物及其制备方法和用途。 聚合物制备如下：在碱的作用下，1-萘酚溴四氟乙醚由1-萘酚和四氟二溴乙烷在有机溶剂中制备，然后用锌粉还原，得到1-萘酚三氟乙烯醚。 1-萘酚三氟乙烯醚在高温下处理，得到双萘酚六氟环丁基醚单体。 单体在三氯化铁存在下进行氧化偶合，得到含有成膜性能好的二萘基和六氟环丁基结构单元的热聚合物，在氮气气氛中，5％重量损失温度（Td5％ ）为437℃，1000℃下的碳残渣产率为54.24％。 该膜的介电常数（30MHz）为2.33。 聚合物适用于电子和电气工业中作为绝缘涂层和用于电子部件的封装材料。

    ALDEHYDE-FUNCTIONALIZED POLYMERS WITH ENHANCED STABILITY
    10.
    发明申请
    ALDEHYDE-FUNCTIONALIZED POLYMERS WITH ENHANCED STABILITY 有权
    具有增强稳定性的ALDEHYDE-功能化聚合物

    公开(公告)号：US20110146925A1

    公开(公告)日：2011-06-23

    申请号：US12641557

    申请日：2009-12-18

    申请人： Heinrich E. Bode ,  Michael R. St. John ,  Mei Liu ,  Robert M. Lowe

    发明人： Heinrich E. Bode ,  Michael R. St. John ,  Mei Liu ,  Robert M. Lowe

    IPC分类号： C08G2/00 ,  C08G12/00 ,  D21H23/76

    CPC分类号： D21H21/18 ,  C08L33/26 ,  C08L97/00 ,  D21H17/34 ,  D21H17/375 ,  D21H17/47 ,  D21H17/66 ,  D21H19/56

    摘要： The current invention includes a composition having stability additives of selected inorganic salts and/or organic incorporated into an aldehyde-functionalized polymer product. The stability additive can be post added to the finished polymer product, added to the reaction vessel prior to inducing functionalization of the non-functionalized polymer, or added at any stage during the functionalization reaction. Methods for forming the composition and using the composition to produce a cellulosic fiber-based medium are also disclosed.

    摘要翻译： 本发明包括具有选定的无机盐和/或有机掺入到醛官能化聚合物产品中的稳定添加剂的组合物。 稳定性添加剂可以在添加到成品聚合物产物中后，在引入非官能化聚合物的官能化之前添加到反应容器中，或者在官能化反应期间的任何阶段加入。 还公开了形成组合物和使用该组合物生产纤维素纤维基培养基的方法。