公开(公告)号：US20200024388A1

公开(公告)日：2020-01-23

申请号：US16335294

申请日：2017-08-22

Applicant: DAIWA CAN COMPANY ,  Bell Polyester Products, Inc.

Inventor： Yusuke ITO ,  Tomomitsu UENO ,  Hideaki TOMURA ,  Masahiro YAMA ,  Tetsuo NISHIKAWA ,  Toshio HONMA

IPC: C08G63/183 ,  C08L67/02 ,  C08J5/00

Abstract: A polyester resin composition includes a copolymer of a polycarboxylic acid component and a polyol component. The polycarboxylic acid component includes terephthalic acid and/or a derivative thereof The polyol component includes ethylene glycol and/or a derivative thereof and 2,2-dimethyl-1,3-propanediol and/or a derivative thereof. A content by percentage of 2,2-dimethyl-1,3-propanediol and/or the derivative thereof is 27 mol % to 55 mol % based on the total amount of the polyol component. The composition has an intrinsic viscosity of 0.5 dl/g to 0.6 dl/g.

公开(公告)号：US20240247101A1

公开(公告)日：2024-07-25

申请号：US18560173

申请日：2022-05-02

Applicant: Bell Polyester Products, Inc. ,  DAIWA CAN COMPANY

Inventor： Takaaki IKEDA ,  Yusuke ITO ,  Akane NOZAKI

IPC: C08G63/183 ,  A45D34/00 ,  A45D40/00 ,  B65D65/38 ,  C08G63/672

CPC classification number: C08G63/183 ,  B65D65/38 ,  C08G63/672 ,  A45D34/00 ,  A45D40/00

Abstract: Polyester resin includes polymer of acid component (A) and alcohol component (B). Component (A) contains 72 mol % or more of terephthalic acid component (A1) and from 8 to 28 mol % of isophthalic acid component (A2) with respect to total amount of component (A). Component (B) contains 77 mol % or more of ethylene glycol component (B1) and from 4 to 18 mol % of 2,2-dimethyl-1,3-propanediol component (B2) with respect to total amount of component (B). Sum of content by percentage of component (A2) with respect to component (A) and content by percentage of component (B2) with respect to component (B) is from 24 to 43 mol %. Content of diethylene glycol component (B3) with respect to total amount of component (B) is 5 mol % or less. Polyester resin has intrinsic viscosity of from 0.48 to 0.67 dl/g.