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    PROCESS FOR MAKING AN OXYMETHYLENE POLYMER
    2.
    发明申请
    PROCESS FOR MAKING AN OXYMETHYLENE POLYMER 审中-公开

    公开(公告)号：US20200048395A1

    公开(公告)日：2020-02-13

    申请号：US16478703

    申请日：2018-01-09

    申请人： BASF SE ,  Kolon Plastics Inc.

    发明人： Thomas Heitz ,  Minlu ZHANG ,  Achim STAMMER ,  JongMoon KIM ,  In-Gi CHO ,  Jin-Sang CHOI

    IPC分类号： C08G2/10 ,  B01J27/12 ,  C08G2/06

    摘要： A process for making an oxymethylene polymer comprising polymerizing at least one compound capable of forming —CH2O— repeat units (monomer) in the presence of at least one ester of the general formula I (ester): R1—CO—O—R2 (I) wherein R1 can be hydrogen, wherein R1 and R2 are independently of each other linear or branched C1 to C10 alkyl C5 to C7 cycloalkyl —[R3-0-]nR4 wherein R3 is a linear or branched C2 to C5 alkylen and R4 is a linear of branched C1 to C5 alkyl and n is an integer of from 1 to 5. and in the presence of at least one Lewis acid.

    PROCESS FOR PRODUCING POLYACETAL COPOLYMER
    7.
    发明申请
    PROCESS FOR PRODUCING POLYACETAL COPOLYMER 有权
    生产聚乙烯醇共聚物的方法

    公开(公告)号：US20170073451A1

    公开(公告)日：2017-03-16

    申请号：US15119561

    申请日：2014-12-10

    申请人： Polyplastics Co., Ltd.

    发明人： Tadahiro HORIGUCHI ,  Eiji MASUDA

    IPC分类号： C08G2/06 ,  C08G2/28 ,  C08G2/10

    CPC分类号： C08G2/06 ,  C08G2/04 ,  C08G2/10 ,  C08G2/28

    摘要： A process for producing a polyacetal copolymer, the process making catalyst deactivation easy and efficient. Trioxane as a major monomer is copolymerized with one or more comonomers that are a cyclic ether and/or cyclic formal having at least one carbon-carbon bond, using a nonvolatile protonic acid as a polymerization catalyst at 100° C. or lower until the conversion reaches 50% and thereafter at a polymerization environment temperature of 115° C. to 140° C. This process includes: a crushing step in which a dry-process crusher is used to obtain a crude polyacetal copolymer crushed to such a degree that when the crude copolymer is screened with a sieve having an opening size of 11.2 mm, 90 parts by weight or more thereof passes therethrough; and a deactivation step in which a basic compound (e) is added to the crude copolymer and the mixture is melt-kneaded to thereby deactivate the polymerization catalyst.

    摘要翻译： 一种生产聚缩醛共聚物的方法，使催化剂失活的方法简单高效。 作为主要单体的三恶烷与一种或多种作为具有至少一个碳 - 碳键的环醚和/或环状缩甲醛的共聚单体共聚，使用非挥发性质子酸作为聚合催化剂，在100℃以下直至转化 达到50％，之后在115℃至140℃的聚合环境温度下进行。该方法包括：破碎步骤，其中使用干法破碎机获得粗聚缩醛共聚物，该聚缩醛共聚物被粉碎至如 粗共聚物用开口尺寸为11.2mm的筛子筛选，其中90重量份以上通过; 以及将碱性化合物（e）加入到粗共聚物中并使混合物熔融捏合以使聚合催化剂失活的失活步骤。

    Method for producing polyacetal copolymer
    8.
    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：US09546241B2

    公开(公告)日：2017-01-17

    申请号：US14786249

    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： C08G2/24 ,  C08G2/10 ,  C08G2/06 ,  C08G2/22 ,  C08G4/00 ,  C08L59/04 ,  C08G2/12

    CPC分类号： C08G2/24 ,  C08G2/06 ,  C08G2/10 ,  C08G2/22 ,  C08G4/00 ,  C08L59/04

    摘要： A high-quality polyacetal copolymer produced by a simple process in an economical manner. The process includes supplying a raw material including trioxane and the like to a reaction device; setting the polymerization environmental temperature to no more than 100° C. until the reaction device conversion rate becomes 0.5, and then carrying out further polymerization; vaporizing and separating unreacted monomers from the reaction mixture at an environmental temperature of at least 115° C. and less than 140° C.; supplying the separated monomers to the raw material supply; and recovering the polyacetal copolymer from the reaction mixture.

    摘要翻译： 以经济的方式通过简单的方法生产的高品质聚缩醛共聚物。 该方法包括向反应装置供应包括三恶烷等的原料; 将聚合环境温度设定在不超过100℃，直到反应装置转化率达到0.5，然后进行进一步的聚合; 在至少115℃且小于140℃的环境温度下从反应混合物中蒸发和分离未反应的单体; 将分离的单体供应给原料供应; 并从反应混合物中回收聚缩醛共聚物。

    Process for preparing polyacetal copolymer
    9.
    发明授权
    Process for preparing polyacetal copolymer 失效
    制备聚缩醛共聚物的方法

    公开(公告)号：US5844059A

    公开(公告)日：1998-12-01

    申请号：US791469

    申请日：1997-01-27

    申请人： Kaoru Yamamoto ,  Hiroyuki Kanai

    发明人： Kaoru Yamamoto ,  Hiroyuki Kanai

    IPC分类号： C08G2/06 ,  C08G2/10 ,  C08G2/18 ,  C08G2/28 ,  C08G6/00 ,  C08G2/00

    CPC分类号： C08G2/18 ,  C08G2/06 ,  C08G2/10 ,  C08G2/28

    摘要： To prepare a thermally very stable polyacetal copolymer containing a very small amount of unstable parts in a high yield according to a simple process wherein an isopolyacid or an acid salt thereof is used as the polymerization catalyst in the copolymerization of trioxane as the principal monomer with a comonomer copolymerizable therewith, and wherein deactivation of the catalyst can be effected simply without fail through contact with a basic gas after polymerization without the necessity for any washing step. In the preparation of a polyacetal copolymer by the copolymerization of trioxane as the principal monomer with a cyclic ether or cyclic formal having at least one carbon--carbon bond as a comonomer, the copolymerization is effected using an isopolyacid or an acid salt thereof as the polymerization catalyst, followed by contact with a basic gas as a deactivator to deactivate the catalyst, and subsequent heat-melting treatment of the resulting crude polymer intact without washing thereof.

    摘要翻译： 为了制备含有非常少量的不稳定部分的热非常稳定的聚缩醛共聚物，根据简单的方法，其中在三恶烷作为主要单体的共聚合中使用异多酸或其酸盐作为聚合催化剂， 可与其共聚的共聚单体，并且其中催化剂的失活可以通过在聚合后与碱性气体接触而简单地进行，而不需要任何洗涤步骤。 在通过三恶烷作为主要单体与具有至少一个碳 - 碳键作为共聚单体的环状醚或环状缩甲醛进行共聚制备聚缩醛共聚物时，使用等多酸或其酸性盐作为聚合反应进行共聚 催化剂，然后与作为失活剂的碱性气体接触以使催化剂失活，随后对所得粗聚合物进行热熔融处理而不洗涤。