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公开(公告)号：US20230340179A1
公开(公告)日：2023-10-26
申请号：US18246740
申请日：2021-08-23
Applicant: POLYPLASTICS CO., LTD.
Inventor： Yuuki Kanda , Tomohiro Monma , Eiji Masuda
IPC: C08G2/24
CPC classification number: C08G2/24
Abstract: Provided is a method of manufacturing a polyacetal copolymer including: a step of copolymerizing 100 parts by mass of trioxane (A), 0.05 to 5 parts by mass of a cyclic acetal compound (B), and 0.001 to 1 parts by mass of an aliphatic glycidyl ether compound (C) having a chlorine content of 1 to 500 mass ppm, in the presence of a linear formal compound (D) as a molecular weight regulator, in which in the step, when a total mass (g) of the trioxane (A), the compound (B), and the compound (C) is “a”, a molar number of the linear formal compound (D) is “b”, and total molar numbers of water and methanol contained in the trioxane (A), the compound (B), and the compound (C) are respectively “c” and “d”, setting is performed to satisfy (b+c+d)/a=1.5 to 7 μmol/g.
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公开(公告)号：US09657136B2
公开(公告)日：2017-05-23
申请号：US14442659
申请日：2013-10-25
Applicant: Polyplastics Co., Ltd.
Inventor： Eiji Masuda , Tomohiro Monma , Tadahiro Horiguchi
CPC classification number: C08G65/266 , C08G2/06 , C08G2/10 , C08G2/18 , C08G2/28
Abstract: A production method for a polyacetal copolymer that makes deactivation of a catalyst simple and efficient and that achieves a high polymerization yield and high quality using equipment that does not require a cleaning step and a process that involves a simple operation technique. The production method for a polyacetal copolymer uses trioxane as a main monomer and a cyclic ether and/or a cyclic formal having at least one carbon-carbon bond as a comonomer. In the production method, a predetermined heteropoly acid is used as a polymerization catalyst to perform copolymerization, a predetermined salt is added to the reaction product, melt kneading processing is performed, and the polymerization catalyst is deactivated.
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Patent Agency Ranking
公开(公告)号：US09546241B2
公开(公告)日：2017-01-17
申请号：US14786249
申请日：2014-04-04
Applicant: Polyplastics Co., Ltd.
Inventor： Tomohiro Monma , Eiji Masuda , Shoji Sanada
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US09695265B2
公开(公告)日：2017-07-04
申请号：US15119561
申请日：2014-12-10
Applicant: Polyplastics Co., Ltd.
Inventor： Tadahiro Horiguchi , Eiji Masuda
Abstract: 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.
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公开(公告)号：US09550853B2
公开(公告)日：2017-01-24
申请号：US14786246
申请日：2014-04-04
Applicant: Polyplastics Co., Ltd.
Inventor： Tomohiro Monma , Eiji Masuda , Shoji Sanada
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20160280852A1
公开(公告)日：2016-09-29
申请号：US14442659
申请日：2013-10-25
Applicant: POLYPLASTICS CO., LTD.
Inventor： Eiji Masuda , Tomohiro Monma , Tadahiro Horiguchi
IPC: C08G65/26
CPC classification number: C08G65/266 , C08G2/06 , C08G2/10 , C08G2/18 , C08G2/28
Abstract: A production method for a polyacetal copolymer that makes deactivation of a catalyst simple and efficient and that achieves a high polymerization yield and high quality using equipment that does not require a cleaning step and a process that involves a simple operation technique. The production method for a polyacetal copolymer uses trioxane as a main monomer and a cyclic ether and/or a cyclic formal having at least one carbon-carbon bond as a comonomer. In the production method, a predetermined heteropoly acid is used as a polymerization catalyst to perform copolymerization, a predetermined salt is added to the reaction product, melt kneading processing is performed, and the polymerization catalyst is deactivated.
Abstract translation: 聚缩醛共聚物的制造方法，其使催化剂失活简单，有效，并且使用不需要清洁步骤的设备和涉及简单操作技术的方法实现高聚合产率和高质量。 聚缩醛共聚物的制造方法使用三恶烷作为主要单体，环状醚和/或具有至少一个碳 - 碳键的环状缩甲醛作为共聚用单体。 在制造方法中，使用预定的杂多酸作为聚合催化剂进行共聚，向反应产物中加入预定的盐，进行熔融混炼处理，聚合催化剂失活。
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公开(公告)号：US09745400B2
公开(公告)日：2017-08-29
申请号：US15119567
申请日：2014-12-10
Applicant: Polyplastics Co., Ltd.
Inventor： Hiroaki Nakao , Eiji Masuda
Abstract: A high-quality polyacetal produced by a process including supplying a raw material comprising trioxane, a comonomer capable of copolymerizing with trioxane and a non-volatile protonic acid to a reactor of a continuous stirring/mixing machine type; carrying out a polymerization reaction of the raw material to produce a reaction mixture; vaporizing an unreacted monomer to separate the unreacted monomer from the reaction mixture and supplying the unreacted monomer to the raw material supplying; collecting a polyacetal copolymer from the reaction mixture into a collection unit which is arranged downstream from a discharge port and is adjusted to have a gauge pressure of 0.2 kPa or more; and adding a basic compound to the collected polyacetal and then subjecting the resultant mixture to a melt-kneading treatment to deactivate the non-volatile protonic acid.
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