公开(公告)号：US20150361023A1

公开(公告)日：2015-12-17

申请号：US14734856

申请日：2015-06-09

Applicant: LG CHEM, LTD.

Inventor： Sung Kyoung KIM ,  Seong Kyun KANG ,  Jun Wye LEE ,  Seung Young PARK ,  Hyeon CHOI

IPC: C07C51/41 ,  C08G64/34

CPC classification number: C07C51/418 ,  C08G64/34 ,  C07C55/12

Abstract: The present invention relates to a preparation method of an organic zinc catalyst capable of preparing an organic zinc catalyst having a finer and more uniform particle size and more improved activity during a polymerization process for preparing a poly(alkylene carbonate) resin, and a preparation method of a poly(alkylene carbonate) resin using the organic zinc catalyst. The preparation method of an organic zinc catalyst includes reacting a zinc precursor and a dicarboxylic acid in the presence of a dispersant to form a zinc dicarboxylate-based catalyst, wherein a reaction step is performed under a condition at which the number of moles of the dicarboxylic acid present in a reaction system is larger than that of the zinc precursor throughout the entire reaction step.

Abstract translation: 本发明涉及一种能够制备具有更精细且更均匀的粒径的有机锌催化剂的有机锌催化剂的制备方法，以及制备聚（碳酸亚烷基酯）树脂的聚合过程中活性更高的制备方法和制备方法 的使用有机锌催化剂的聚（碳酸亚烷基酯）树脂。 有机锌催化剂的制备方法包括在分散剂存在下使锌前体和二羧酸反应形成二羧酸锌催化剂，其中反应步骤是在二羧酸二羧酸的摩尔数 在整个反应步骤中，存在于反应体系中的酸大于锌前体的酸。

公开(公告)号：US20170275423A1

公开(公告)日：2017-09-28

申请号：US15503934

申请日：2015-11-04

Applicant: LG CHEM, LTD.

Inventor： Woo Sung HWANG ,  Jong-Ku LEE ,  Seung Young PARK ,  Dong Kwon LEE ,  Hyun Ju CHO ,  Kwang Hyon KIM ,  Yong Hee AN ,  Jun Wye LEE

IPC: C08G64/34 ,  C08J3/07

Abstract: The present invention relates to a production method of polyalkylene carbonate particles capable of precipitating and separating resin particles from a polyalkylene carbonate suspension obtained through polymerization of an epoxide and carbon dioxide. According to the present invention, the production method is capable of obtaining a polyalkylene carbonate resin having excellent workability with a high yield and a low energy cost while reducing a scale of a facility, a processing time, and a wastewater amount, as compared to conventional methods such as a flash separation method.

公开(公告)号：US20180305542A1

公开(公告)日：2018-10-25

申请号：US15769648

申请日：2017-03-08

Applicant: LG CHEM, LTD.

Inventor： Jun Wye LEE ,  Seung Young PARK ,  Jin Woo LEE ,  Hyun Ju CHO ,  Jung Min SOHN ,  Yoon Jung KIM ,  Bo Hyun SEONG ,  Taek Jun JUNG ,  Yun Ki CHO ,  Yong Hee AN ,  Sung-Kyoung KIM ,  Hyun Min KIM

IPC: C08L69/00 ,  B29B9/06 ,  C08G64/02 ,  C08G64/34 ,  C08J3/09

Abstract: The present disclosure relates to an economical method of preparing a resin composition including a polyalkylene carbonate with improved thermal stability and processability. More specifically, the method of preparing a resin composition includes the steps of polymerizing carbon dioxide and an epoxide compound in the presence of a zinc-based catalyst and a solvent, recovering monomers, removing the catalyst and recovering raw materials, solution-blending with a thermostable resin to improve the thermal stability and processability, and removing the solvent and byproducts from the reaction mixture by using an agitated flash drum and an extrusion or kneader-type devolatilizer.

公开(公告)号：US20170226284A1

公开(公告)日：2017-08-10

申请号：US15515042

申请日：2015-12-08

Applicant: LG CHEM, LTD.

Inventor： Jung Min SOHN ,  Seung Young PARK ,  Jin Woo LEE ,  Yoon Jung KIM ,  Taek Jun JUNG ,  Yun Ki CHO ,  Yong Hee AN ,  Jun Wye LEE

IPC: C08G64/40 ,  C08G64/34

CPC classification number: C08G64/40 ,  C08G64/0208 ,  C08G64/34 ,  C08G64/406

Abstract: A method of preparing a polyalkylene carbonate resin is provided. More particularly, a method of preparing a polyalkylene carbonate resin capable of preventing polymer degradation and improving physical properties and quality of a final resin product, in which, after polymerization of polyalkylene carbonate, by-products are removed by using a large amount of water to purify a reaction mixture, and in a subsequence process of removing a catalyst residue, a primary purification method is conducted by using a filter so that a content of the catalyst in the reaction mixture is less than 1% by weight, is provided.

公开(公告)号：US20190010283A1

公开(公告)日：2019-01-10

申请号：US15768319

申请日：2017-03-17

Applicant: LG CHEM, LTD.

Inventor： Jun Wye LEE ,  Il Ha LEE ,  Seung Young PARK ,  Ki-Hwan KIM ,  Sung-Kyoung KIM

IPC: C08G64/34

Abstract: The present invention relates to an organozinc-supported catalyst, a method for producing the same, and a method for preparing a polyalkylene carbonate resin using the catalyst. The organozinc-supported catalyst provided by the present invention includes a zinc dicarboxylate-based catalyst supported on a zinc compound layer formed on at least a portion of a support surface, and can be used repeatedly or continuously while exhibiting improved selectivity in the polymerization process for preparing a polyalkylene carbonate resin.

公开(公告)号：US20170029563A1

公开(公告)日：2017-02-02

申请号：US15303349

申请日：2015-06-12

Applicant: LG CHEM, LTD.

Inventor： Seong Kyun KANG ,  Sung-Kyoung KIM ,  Jun Wye LEE ,  Eun Kyoung PARK ,  Seung Young PARK ,  Hyeon CHOI

IPC: C08G64/34

CPC classification number: C08G64/34 ,  B01J31/04 ,  C07C51/41 ,  C07C51/412 ,  C07C55/12

Abstract: An organic zinc catalyst having more uniform and fine particle size and showing more improved activity in a polymerization process for the preparation of a poly(alkylene carbonate) resin and a preparation method thereof, and a method of preparing a poly(alkylene carbonate) resin using the organic zinc catalyst, are provided. The preparation method of the organic zinc catalyst includes the steps of surface-treating a zinc precursor with a dispersant, and reacting the surface-treated zinc precursor with dicarboxylic acid to form a zinc dicarboxylate-based catalyst.

Abstract translation: 在制备聚（碳酸亚烷基酯）树脂的聚合方法中具有更均匀且细小的粒度和显示更好的活性的有机锌催化剂及其制备方法，以及使用 有机锌催化剂。 有机锌催化剂的制备方法包括以下步骤：用分散剂对锌前体进行表面处理，并使表面处理的锌前体与二羧酸反应形成二羧酸锌催化剂。