公开(公告)号：US20170073451A1

公开(公告)日：2017-03-16

申请号：US15119561

申请日：2014-12-10

Applicant: Polyplastics Co., Ltd.

Inventor： Tadahiro HORIGUCHI ,  Eiji MASUDA

IPC: C08G2/06 ,  C08G2/28 ,  C08G2/10

CPC classification number: C08G2/06 ,  C08G2/04 ,  C08G2/10 ,  C08G2/28

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.

Abstract translation: 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。

公开(公告)号：US20160122459A1

公开(公告)日：2016-05-05

申请号：US14786249

申请日：2014-04-04

Applicant: POLYPLASTICS CO., LTD.

Inventor： Tomohiro MONMA ,  Eiji MASUDA ,  Shoji SANADA

IPC: C08G2/24

CPC classification number: C08G2/24 ,  C08G2/06 ,  C08G2/10 ,  C08G2/22 ,  C08G4/00 ,  C08L59/04

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。

公开(公告)号：US20160075815A1

公开(公告)日：2016-03-17

申请号：US14786246

申请日：2014-04-04

Applicant: POLYPLASTICS CO., LTD.

Inventor： Tomohiro MONMA ,  Eiji MASUDA ,  Shoji SANADA

IPC: C08G2/12 ,  C08G4/00 ,  C08G2/06

CPC classification number: C08G2/12 ,  C08G2/06 ,  C08G2/10 ,  C08G2/22 ,  C08G4/00 ,  C08L59/04

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。

公开(公告)号：US20170114176A1

公开(公告)日：2017-04-27

申请号：US15119567

申请日：2014-12-10

Applicant: Polyplastics Co., Ltd.

Inventor： Hiroaki NAKAO ,  Eiji MASUDA

IPC: C08G2/28 ,  C08G2/10 ,  C08G2/06

CPC classification number: C08G2/28 ,  C08G2/04 ,  C08G2/06 ,  C08G2/10

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.