公开(公告)号：US11046864B2

公开(公告)日：2021-06-29

申请号：US14902609

申请日：2013-07-05

申请人： DAIWA CAN COMPANY ,  Bell Polyester Products, Inc.

发明人： Takashi Kimiduka ,  Yuji Takeuchi ,  Junji Matsumura ,  Masaya Okimoto ,  Keita Katsuma ,  Hideaki Tomura ,  Sadamu Nakatsuka

IPC分类号： C08G63/183 ,  C09D167/02 ,  B65D1/12 ,  B65D25/14 ,  B65D25/34 ,  B32B27/36 ,  B32B15/09 ,  C08G63/199 ,  C09D167/08 ,  C08G63/78

摘要： The problem to be solved by the present invention is to provide a polyester resin excellent in various properties wherein the film formability is good, film fracture (hairs) and scraping (galling) are not easily generated in the drawing/ironing process when applied to a metal-sheet-coating polyester film, the film surface is not damaged when used as the inner-surface film for a metallic can, and the metallic can is hardly corroded (dent resistance), by dropping or external impact (denting), after a product is made by enclosing contents into the can.
The copolyester resin of the present invention is characterized by comprising, as the constituent units, 50 to 93 mass % of (A) ester oligomer with the number-average molecular weight of 700 or lower and consisting of a dicarboxylic acid unit (a1) containing 70 mole % or more of the terephthalic acid component and a diol unit (a2) containing 70 mole % or more of the ethylene glycol component; and 7 to 50 mass % of (B) polyester polyol with the number-average molecular weight of 1500 to 3000 and consisting of a hydrogenated dimer acid unit (b1) and a 1,4-butanediol unit (b2).

公开(公告)号：US10662285B2

公开(公告)日：2020-05-26

申请号：US16074949

申请日：2016-02-03

申请人： DAIWA CAN COMPANY ,  Bell Polyester Products, Inc.

发明人： Masaya Okimoto ,  Keita Katsuma ,  Hideaki Tomura

IPC分类号： C08G63/199 ,  C08G63/685 ,  C08L67/02 ,  C08G63/553

摘要： The present invention provides a polyester resin composition excellent in transparency and flexibility, high in heat resistance, undergoes the bleeding-out of an oligomer at a reduced level, and can be formed into a formed or molded article or pellets that are rarely agglutinated. A polyester resin composition includes a polyester resin, made by a polymerization reaction of a dicarboxylic acid component containing (a) 75 to 98 mol% of an alicyclic dicarboxylic acid, preferably having 5 to 30 carbon atoms, and (b) 2 to 25 mol% of a dimer acid, preferably having 36 or 44 carbon atoms, with (c) a diol component containing 75 mol% or more of an alicyclic diol. The proportion of the trans-form relative to the total amount of the trans-form and the cis-form of the alicyclic dicarboxylic acid unit contained in the polyester resin composition is desirably 80% or more.

公开(公告)号：US20190040193A1

公开(公告)日：2019-02-07

申请号：US16074949

申请日：2016-02-03

申请人： DAIWA CAN COMPANY ,  Bell Polyester Products, Inc.

发明人： Masaya OKIMOTO ,  Keita KATSUMA ,  Hideaki TOMURA

IPC分类号： C08G63/685

CPC分类号： C08G63/6856 ,  C08G63/199 ,  C08G63/553 ,  C08L67/02

摘要： [Problem to be Solved] The present invention provides a polyester resin composition excellent in transparency and flexibility, high in heat resistance, undergoes the bleeding-out of an oligomer at a reduced level, and can be formed into a formed or molded article or pellets that are rarely agglutinated.[Solution] A polyester resin composition including a polyester resin, the polyester resin being made a polymerization reaction of a dicarboxylic acid component containing (a) 75 to 98 mol % of an alicyclic dicarboxylic acid and (b) 2 to 25 mol % of a dimer acid with (c) a diol component containing 75 mol % or more of an alicyclic diol. (a) The alicyclic dicarboxylic acid is preferably an alicyclic dicarboxylic acid having 5 to 30 carbon atoms. The proportion of the trans-form relative to the total amount of the trans-form and the cis-form of (a) the alicyclic dicarboxylic acid unit contained in the polyester resin composition is desirably 80% or more. (b) The dimer acid is preferably a dimer acid having 36 or 44 carbon atoms.

公开(公告)号：US20200024388A1

公开(公告)日：2020-01-23

申请号：US16335294

申请日：2017-08-22

申请人： DAIWA CAN COMPANY ,  Bell Polyester Products, Inc.

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

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

摘要： 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：US20160186005A1

公开(公告)日：2016-06-30

申请号：US14902609

申请日：2013-07-05

申请人： DAIWA CAN COMPANY ,  BELL POLYESTER PRODUCTS, INC.

发明人： Takashi KIMIDUKA ,  Yuji TAKEUCHI ,  Junji MATSUMURA ,  Masaya OKIMOTO ,  Keita KATSUMA ,  Hideaki TOMURA ,  Sadamu NAKATSUKA

IPC分类号： C09D167/02 ,  B65D25/34 ,  B65D25/14 ,  C08G63/183 ,  B65D1/12

CPC分类号： C09D167/02 ,  B32B15/09 ,  B32B27/36 ,  B32B2307/558 ,  B32B2439/66 ,  B65D1/12 ,  B65D25/14 ,  B65D25/34 ,  C08G63/183 ,  C08G63/199 ,  C08G63/78 ,  C09D167/08

摘要： The problem to be solved by the present invention is to provide a polyester resin excellent in various properties wherein the film formability is good, film fracture (hairs) and scraping (galling) are not easily generated in the drawing/ironing process when applied to a metal-sheet-coating polyester film, the film surface is not damaged when used as the inner-surface film for a metallic can, and the metallic can is hardly corroded (dent resistance), by dropping or external impact (denting), after a product is made by enclosing contents into the can.The copolyester resin of the present invention is characterized by comprising, as the constituent units, 50 to 93 mass % of (A) ester oligomer with the number-average molecular weight of 700 or lower and consisting of a dicarboxylic acid unit (a1) containing 70 mole % or more of the terephthalic acid component and a diol unit (a2) containing 70 mole % or more of the ethylene glycol component; and 7 to 50 mass % of (B) polyester polyol with the number-average molecular weight of 1500 to 3000 and consisting of a hydrogenated dimer acid unit (b1) and a 1,4-butanediol unit (b2).

摘要翻译： 本发明要解决的问题是提供一种在涂布/熨烫过程中不易在拉伸/熨烫过程中产生各种性能优异的聚酯树脂，其中成膜性良好，薄膜断裂（毛发）和刮擦（擦伤） 金属片涂布聚酯膜，当用作金属罐的内表面膜时，膜表面不被损坏，并且金属罐几乎不被腐蚀（耐凹陷），通过掉落或外部冲击（凹陷），在 产品是通过将内容包装在罐中制成的。 本发明的共聚酯树脂的特征在于，作为构成单元的50〜93质量％的数均分子量为700以下的（A）酯低聚物，由含有 70摩尔％以上的对苯二甲酸成分和含有70摩尔％以上的乙二醇成分的二醇单元（a2） 和7〜50质量％的数均分子量为1500〜3000的（B）聚酯多元醇，由氢化二聚酸单元（b1）和1,4-丁二醇单元（b2）组成。

公开(公告)号：US20240247101A1

公开(公告)日：2024-07-25

申请号：US18560173

申请日：2022-05-02

申请人： Bell Polyester Products, Inc. ,  DAIWA CAN COMPANY

发明人： Takaaki IKEDA ,  Yusuke ITO ,  Akane NOZAKI

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

CPC分类号： C08G63/183 ,  B65D65/38 ,  C08G63/672 ,  A45D34/00 ,  A45D40/00

摘要： 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.