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：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。