公开(公告)号：US20160340491A1

公开(公告)日：2016-11-24

申请号：US15114552

申请日：2014-12-18

Applicant: KANEKA CORPORATION

Inventor： Tetsuya MINAMI ,  Ryohei KOYAMA ,  Noriyuki SUZUKI

IPC: C08K5/053 ,  C08J3/205

CPC classification number: C08K5/053 ,  C08J3/205 ,  C08J5/18 ,  C08J2367/04 ,  C08L67/04

Abstract: It is an object to provide a method of producing a polyester resin composition with improved crystallization, the polyester resin composition making it possible to produce a molded article with reduced appearance defects, such as fish eyes. With the method, a polyester resin composition containing a polyester resin and pentaerythritol is produced, and the method of producing the polyester resin composition includes a step of mixing the polyester resin and the pentaerythritol together in the presence of water.

Abstract translation: 本发明的目的是提供一种生产具有改善的结晶性的聚酯树脂组合物的方法，所述聚酯树脂组合物可以制备具有减少的外观缺陷的模制品，例如鱼眼。 通过该方法，制造含有聚酯树脂和季戊四醇的聚酯树脂组合物，聚酯树脂组合物的制造方法包括在水的存在下将聚酯树脂与季戊四醇混合的工序。

公开(公告)号：US20200181394A1

公开(公告)日：2020-06-11

申请号：US16316731

申请日：2017-07-13

Applicant: KANEKA CORPORATION

Inventor： Ryohei KOYAMA

IPC: C08L67/03 ,  C08K5/109 ,  C08K3/36 ,  C08J3/00 ,  C08K5/11 ,  C08K5/1535

Abstract: An object of the present invention is to provide a production method in which melting and kneading is performed to obtain a resin composition containing at least an aliphatic polyester, silica and a dispersion aid, the method being capable of stably ensuring favorable dispersibility of silica and improving the tear strength of the resin composition. Provided is a method for producing an aliphatic polyester resin composition containing 100 parts by weight of an aliphatic polyester (A), 5 to 23 parts by weight of silica (B) and 8 to 23 parts by weight of a dispersion aid (C), the method including: a first step of mixing the aliphatic polyester (A) in an amount of 20 to 50% by weight based on the total amount of the aliphatic polyester (A) constituting the composition, and the silica (B); a second step of mixing the dispersion aid (C) with the mixture obtained in the first step; a third step of mixing the mixture obtained in the second step with the aliphatic polyester (A) remaining in an amount of 80 to 50% by weight based on the total amount of the aliphatic polyester (A) constituting the composition; and a step of melting and kneading the mixture obtained in the third step.

公开(公告)号：US20160090466A1

公开(公告)日：2016-03-31

申请号：US14892149

申请日：2014-03-26

Applicant: KANEKA CORPORATION

Inventor： Ryohei KOYAMA ,  Tetsuya MINAMI ,  Noriyuki SUZUKI

IPC: C08K5/053

CPC classification number: C08K5/053 ,  C08K5/103 ,  C08L101/16 ,  C08L67/02

Abstract: Provided is a resin composition excellent in processability and productivity, which improves low crystallization rate and improves processability in forming such as injection molding or sheet forming. Provided is a polyester resin composition including a polyester resin (A), a crystallization promoter (B), and pentaerythritol (C).

Abstract translation: 提供了加工性和生产率优异的树脂组合物，其改善了低结晶速率并提高了成型时的加工性，例如注射成型或成型。 提供包含聚酯树脂（A），结晶促进剂（B）和季戊四醇（C）的聚酯树脂组合物。

公开(公告)号：US20200181397A1

公开(公告)日：2020-06-11

申请号：US16740572

申请日：2020-01-13

Applicant: KANEKA CORPORATION

Inventor： Ryohei KOYAMA ,  Tetsuo OKURA

IPC: C08L67/04 ,  C08K5/11 ,  C08K5/1535 ,  C08K5/14 ,  B29C49/00

Abstract: Provided are a resin composition containing poly(3-hydroxyalkanoate), the resin composition enabling a film or a sheet to be stably produced under practical processing conditions by inflation molding; and a method for producing the resin composition. The resin composition includes 100 parts by weight of poly(3-hydroxyalkanoate) and 5 to 15 parts by weight of an ester compound, and having a ratio of 3.5×10−2 to 4.8×10−2 (sec/[Pa·s]) between a melt viscosity (Pa·s) and a drawdown time (sec).

公开(公告)号：US20200017641A1

公开(公告)日：2020-01-16

申请号：US16497614

申请日：2018-03-28

Applicant: KANEKA CORPORATION

Inventor： Ryohei KOYAMA

IPC: C08J3/22 ,  C08J5/18 ,  B29C48/00

Abstract: Provided is a method with which a biodegradable polyester film containing polyhydroxyalkanoate can be stably produced by film blowing under practical processing conditions. A method for producing a biodegradable polyester film containing a biodegradable aliphatic polyester (A) and a fatty acid amide (B) by film blowing, the biodegradable aliphatic polyester (A) containing polyhydroxyalkanoate, the method including: a step (I) of dry-blending the biodegradable aliphatic polyester (A) with a masterbatch containing the fatty acid amide (B) and a base material resin; and a step (II) of subjecting the mixture obtained in the step (I) to film blowing.

公开(公告)号：US20160251494A1

公开(公告)日：2016-09-01

申请号：US15028627

申请日：2014-09-12

Applicant: KANEKA CORPORATION

Inventor： Ryohei KOYAMA ,  Tetsuya MINAMI ,  Noriyuki SUZUKI

IPC: C08K5/053 ,  C08K5/11 ,  C08K11/00 ,  C08K7/02 ,  C08K3/26 ,  C08K3/34 ,  C08J5/00

CPC classification number: C08K5/053 ,  C08J5/00 ,  C08J2367/00 ,  C08K3/013 ,  C08K3/26 ,  C08K3/34 ,  C08K5/11 ,  C08K7/02 ,  C08K11/00 ,  C08K2003/265 ,  C08K2201/014 ,  C08K2201/018 ,  C08L67/04

Abstract: An object of the present invention is to: improve slowness of crystallization that is a drawback of polyhydroxyalkanoate; suppress bloom of a nucleating agent or the like; and improve surface smoothness and mold transferability of an obtained molded body.The present invention provides an aliphatic polyester resin composition including polyhydroxyalkanoate (A), pentaerythritol (B), and a filler (C).

Abstract translation: 本发明的一个目的是：改善作为聚羟基链烷酸酯缺点的结晶缓慢; 抑制成核剂等的开花; 并提高所得成型体的表面平滑性和模具转印性。 本发明提供包含聚羟基链烷酸酯（A），季戊四醇（B）和填料（C）的脂肪族聚酯树脂组合物。