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公开(公告)号：US20160115276A1
公开(公告)日：2016-04-28
申请号：US14889393
申请日：2014-05-09
IPC分类号： C08G69/26 , C08J5/18 , C09D177/06 , C08L77/06 , C08G69/48
CPC分类号： C08G69/26 , C08G69/48 , C08G73/1042 , C08G73/1053 , C08G73/1064 , C08G73/1082 , C08J5/18 , C08J2377/06 , C08J2379/08 , C08K3/013 , C08L77/06 , C09D177/06 , C09D179/08 , C08K3/0033 , C08L79/08
摘要： Provided is a polyimide excellent in heat resistance and colorless transparency and also excellent in flexibility and ultraviolet ray transmittance. The polyimide includes a structural unit represented by Formula (1a) and a structural unit represented by Formula (1b) wherein R is a specific aromatic group.
摘要翻译： 提供耐热性和无色透明性优异的柔性和紫外线透射率优异的聚酰亚胺。 聚酰亚胺包括由式（1a）表示的结构单元和由式（1b）表示的结构单元，其中R是特定的芳族基团。
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公开(公告)号：US20210328162A1
公开(公告)日：2021-10-21
申请号：US17264993
申请日：2019-03-04
申请人： RIKEN , Mitsui Chemicals, Inc.
发明人： Kenjiro FUKUDA , Hiroki KIMURA , Takao SOMEYA , Kenichi FUKUKAWA , Masaki OKAZAKI , Tatsuhiro URAKAMI
摘要： The present invention addresses the problem of providing a flexible electronic element substrate comprising a polyimide layer that has both low ultraviolet transmittance and high visible light transmittance and that is capable of suppressing ultraviolet degradation without any reduction in the performance of an electronic element. In order to solve this problem, the flexible electronic element substrate comprises a polyimide layer that satisfies all of (1) through (3) below: (1) maximum transmittance at a wavelength of 400±5 nm is 70% or higher at a thickness of 5 μm; (2) the b* value in an L*a*b* color system is 5 or less at a thickness of 5 μm; and (3) transmittance of light at a wavelength of 350 nm is 10% or less at a thickness of 5 μm.
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公开(公告)号：US20240182765A1
公开(公告)日：2024-06-06
申请号：US18551460
申请日：2022-03-11
发明人： Masaki OKAZAKI , Ko TAKASE , Tatsuhiro URAKAMI , Yoshihiro SAKATA
IPC分类号： C09J179/08 , C08G73/10
CPC分类号： C09J179/08 , C08G73/1082 , C09J2479/00
摘要： The polyamic acid composition according to the present disclosure comprises a polyamic acid. The monomers constituting the polyamic acid include, relative to the total monomers, 30-95 mol % of monomer (A) that has a diphenyl ether skeleton represented by general formula (1) or (2) but no benzophenone skeleton, and 0-5 mol % of monomer (B) that has a benzophenone skeleton. The diamines constituting the polyamic acid include aromatic diamine (β1) that has a diphenyl ether skeleton represented by general formula (2) and aliphatic diamine (β2) represented by general formula (3) or (4), and the molar ratio b/a of the diamines b to tetracarboxylic dianhydride a constituting the polyamic acid is 0.90-0.999.
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公开(公告)号：US20190002691A1
公开(公告)日：2019-01-03
申请号：US15780318
申请日：2016-11-30
发明人： Ryohei OGAWA , Chojiro HIGUCHI , Tatsuhiro URAKAMI
摘要： Disclosed are a water-insoluble copolymer having a constitutional unit (X) derived from a hydroxycarboxylic acid and a constitutional unit (Y) derived from an amino group-containing polyvalent carboxylic acid, wherein the molar ratio (X/Y) of constitutional units is 2/1≤(X/Y)
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公开(公告)号：US20220372226A1
公开(公告)日：2022-11-24
申请号：US17765726
申请日：2020-04-06
摘要： The purpose of the present invention is to provide: a polyimide film which is able to be formed at relatively low temperatures, while being less susceptible to coloring and having high transparency; and a polyamide acid or varnish for achieving this polyimide film. This polyimide film contains a polyimide which is a polymerization product of a tetracarboxylic acid dianhydride component and a diamine component. The tetracarboxylic acid dianhydride component contains from 60% by mole to 100% by mole of a tetracarboxylic acid dianhydride of a specific structure relative to the total amount of the tetracarboxylic acid dianhydride; and the diamine component contains from 30% by mole to 70% by mole of an alicyclic diamine and from 30% by mole to 70% by mole of an alkylene diamine relative to the total amount of the diamine component.
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公开(公告)号：US20160075830A1
公开(公告)日：2016-03-17
申请号：US14786703
申请日：2014-04-23
IPC分类号： C08G73/10 , C08L79/08 , H05K1/02 , G03F7/20 , H05K1/03 , C09D179/08 , B32B15/088
CPC分类号： C08G73/1042 , B32B15/08 , B32B15/088 , B32B27/281 , B32B2307/206 , B32B2307/412 , B32B2457/08 , B32B2457/20 , B32B2551/00 , C08G73/10 , C08G73/1082 , C08J5/18 , C08J2379/08 , C08L79/08 , C09D179/08 , G03F7/037 , G03F7/11 , G03F7/20 , G03F7/322 , H01B3/306 , H05K1/0296 , H05K1/0346 , H05K1/0353 , H05K1/0393 , H05K3/0017 , H05K3/281 , H05K2201/0154
摘要： The purpose of the present invention is to provide a block polyamide acid imide having an appropriate solubility in aqueous alkaline solutions, and block polyimides that are obtained using same and have high transparency and a low coefficient of linear thermal expansion (low CTE). This block polyimide comprises blocks configured from repeating structural units represented by formula (1A) and blocks configured from repeating structural units represented by formula (1B).
摘要翻译： 本发明的目的是提供一种在碱性水溶液中具有适当溶解度的嵌段聚酰胺酰亚胺，以及使用该嵌段聚酰亚胺，并且具有高透明度和低热膨胀系数（低CTE）的嵌段聚酰亚胺。 该嵌段聚酰亚胺包含由式（1A）表示的重复结构单元和由式（1B）表示的重复结构单元构成的嵌段构成的嵌段。
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公开(公告)号：US20160053135A1
公开(公告)日：2016-02-25
申请号：US14781931
申请日：2014-04-01
CPC分类号： C09D179/08 , B29C37/0025 , B29C41/02 , B29C41/46 , B29K2079/08 , B29K2995/0018 , B29K2995/0097 , B29L2007/008 , B29L2031/3475 , C08G73/1064 , C08G73/1071 , C08G73/1078 , C08G73/1082 , C08G73/14 , C08J5/18 , C08J2379/08
摘要： The present invention addresses the problem of providing a high-transparency polyimide film in which the thickness-direction phase difference Rth is kept within a predetermined range. The present invention also addresses the problem of providing a polyamic acid and a varnish used to obtain the polyimide film. In order to overcome the aforementioned problem, the present invention is a polyimide film containing a polyimide obtained by bringing about a reaction between a tetracarboxylic dianhydride and a diamine, the polyimide film having (a) a thickness-direction phase difference Rth of −5 to 100 nm per 10 μm of thickness, (b) a transmittance of 80% or more with respect to light having a wavelength of 400 nm, (c) a haze of 3% or less, and (d) a glass transition point of 250° C. or higher.
摘要翻译： 本发明解决了提供其中厚度方向相位差Rth保持在预定范围内的高透明度聚酰亚胺膜的问题。 本发明还涉及提供用于获得聚酰亚胺膜的聚酰胺酸和清漆的问题。 为了克服上述问题，本发明是一种聚酰亚胺膜，其含有通过使四羧酸二酐与二胺反应而得到的聚酰亚胺，所述聚酰亚胺膜的（a）厚度方向相位差Rth为-5〜 相对于波长为400nm的光，（c）雾度为3％以下，（d）玻璃化转变点为250以下，透光率为80％以上 ℃以上。
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公开(公告)号：US20240182645A1
公开(公告)日：2024-06-06
申请号：US18551672
申请日：2022-03-25
发明人： Masaki OKAZAKI , Ko TAKASE , Tatsuhiro URAKAMI , Yoshihiro SAKATA
IPC分类号： C08G73/10 , B32B27/28 , C09J7/30 , C09J179/08
CPC分类号： C08G73/1042 , B32B27/281 , C08G73/1071 , C09J7/30 , C09J179/08 , C08G2170/00
摘要： This poly(amic acid) composition contains a poly(amic acid). Aromatic monomers account for 95 mol % or more of all monomers that constitute the poly(amic acid). The aromatic monomers include 40-95 mol % of a monomer (A) having a prescribed diphenyl ether skeleton, 0-60 mol % of a monomer (B) having a benzophenone skeleton and 0-60 mol % of a monomer (C) having a biphenyl skeleton, each relative to the total amount of monomers. The monomer (A) having a diphenyl ether skeleton includes 20 mol % or more of a monomer (A-1) having at least three aromatic rings relative to the total amount of monomers. The diamine/tetracarboxylic acid dianhydride molar ratio is 0.90-0.999.
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公开(公告)号：US20210261732A1
公开(公告)日：2021-08-26
申请号：US17253651
申请日：2019-06-20
IPC分类号： C08G73/10 , C08J5/18 , C09D179/08
摘要： The purpose of the present invention is to provide: a film having high thermal stability, high bending strength (tensile elongation), small retardation in the thickness direction, a low coefficient of thermal expansion, and high transparency; and a polyamic acid or varnish for obtaining the film. The film satisfies all of requirements (i)-(vi) below. (i) The average value of the coefficient of thermal expansion in the range of 100-200° C. is 35 ppm/K or less. (ii) The absolute value of the retardation in the thickness direction is 200 nm or less per 10 μm of thickness. (iii) The glass transition temperature is 340° C. or higher. (iv) The total light transmittance is at least 85%. (v) The b* value in the L*a*b* color system is 5 or less. (vi) The tensile elongation is at least 10%.
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公开(公告)号：US20170240705A1
公开(公告)日：2017-08-24
申请号：US15589114
申请日：2017-05-08
CPC分类号： C08G73/1042 , B32B15/08 , B32B15/088 , B32B27/281 , B32B2307/206 , B32B2307/412 , B32B2457/08 , B32B2457/20 , B32B2551/00 , C08G73/10 , C08G73/1082 , C08J5/18 , C08J2379/08 , C08L79/08 , C09D179/08 , G03F7/037 , G03F7/11 , G03F7/20 , G03F7/322 , H01B3/306 , H05K1/0296 , H05K1/0346 , H05K1/0353 , H05K1/0393 , H05K3/0017 , H05K3/281 , H05K2201/0154
摘要： Provided are a block polyamide acid imide having an appropriate solubility in aqueous alkaline solutions, and block polyimides that are obtained using same and have high transparency and a low coefficient of linear thermal expansion (low CTE). The block polyimide comprises blocks configured from repeating structural units represented by defined formula (1A) and blocks configured from repeating structural units represented by defined formula (1B).
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