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    • 8. 发明授权
    • Polyamic acid, polyimide, process for producing these, and film of the polyimide
    • 聚酰胺酸,聚酰亚胺,其制造方法和聚酰亚胺薄膜
    • US06710160B2
    • 2004-03-23
    • US10088481
    • 2002-03-20
    • Wataru YamashitaKatsuji WatanabeHideaki OikawaHisato Ito
    • Wataru YamashitaKatsuji WatanabeHideaki OikawaHisato Ito
    • C08G7310
    • G01N33/54346C08G73/10C08G73/1082
    • Disclosed are a polyamic acid having repeating units represented by the formula (1): wherein the norbornane skeleton of comprises four components of and their contents satisfy the following: 1%≦2,5-[diexo]≦90%, 1%≦2,5-[exo,endo]≦90%, 1%≦2,6-[diexo]≦90%, 1% ≦2,6-[exo,endo]≦90%, provided that (2,5-[diexo])+(2,5-[exo,endo])+(2,6-[diexo])+(2,6-[exo,endo])=100%, R represents from 4 to 27 carbon atoms, and represents a tetravalent group selected from the group consisting of an aliphatic group, a monocyclic aliphatic group, a condensed polycyclic aliphatic group, a monocyclic aromatic group, a condensed polycyclic aromatic group, and a non-condensed polycyclic aliphatic or aromatic group which is composed of cycloaliphatic or aromatic groups mutually bonded to each other either directly or via a crosslinking member; and a polyimide which is obtained by imidizing the polyamic acid and which has good properties intrinsic to polyimides, or that is, thermal resistance, mechanical properties, slidability, low water absorption, electric properties and radiation resistance intrinsic thereto. By varying the composition ratio of the starting diamine isomers, various polyimides having controlled thermal resistance, melt flowability, optical properties, chemical resistance and electric properties and capable of forming films of various forms can be obtained.
    • 公开了具有由式(1)表示的重复单元的聚酰胺酸:其中含有四种成分及其含量的降冰片烷骨架满足以下条件:1%<= 2,5- [阴离子] <= 90%,1%<= 2,5- [外,内] <= 90%,1%<= 2,6- [阴离子] <= 90%,1%<= 2,6- [外,内] <= 90% 表示4〜27个碳原子,表示选自脂肪族基团,单环脂族基团,缩合多环脂族基团,单环芳香族基团,缩合多环芳香族基团和未缩合的四价基团 由脂环族或芳族基团组成的多环脂肪族或芳香族基团直接或通过交联成分彼此相互结合; 和通过酰亚胺化聚酰胺酸而获得的聚酰亚胺,其具有聚酰亚胺所固有的良好性能,或者其本身具有的热阻,机械性能,滑动性,低吸水性,电性能和耐辐射性。 通过改变起始二胺异构体的组成比,可以获得具有受控热阻,熔体流动性,光学性能,耐化学性和电性能并且能够形成各种形式的膜的各种聚酰亚胺。
    • 9. 发明授权
    • Readily soluble, amorphous polyimide, and preparation process of same
    • 易溶,无定形聚酰亚胺及其制备方法相同
    • US5480965A
    • 1996-01-02
    • US280551
    • 1994-07-26
    • Wataru YamashitaYuichi OkawaHideaki OikawaTadashi AsanumaYuko IshiharaMitsunori MatsuoKeizaburo YamaguchiAkihiro YamaguchiShoji Tamai
    • Wataru YamashitaYuichi OkawaHideaki OikawaTadashi AsanumaYuko IshiharaMitsunori MatsuoKeizaburo YamaguchiAkihiro YamaguchiShoji Tamai
    • C07C201/12C07C205/45C07C221/00C07C225/22C08G73/10C08G73/12C08J5/18C08L79/08C08G69/26C08L77/00
    • C08G73/10C08G73/1007C08G73/1014C08G73/1017C08G73/1067Y10T428/31504Y10T428/31721
    • This invention relates to a novel thermoplastic and amorphous polyimide which is readily soluble in organic solvent, a novel aromatic diamino compound used for the polyimide, a preparation process thereof, a polyimide-based resin composition comprising the thermoplastic polyimide and a fibrous reinforcement, a process for preparing the resin composition, an injection molded article of the resin composition, a polyimide-based composite obtained by molding the above soluble and thermoplastic polyimide in combination with a fibrous reinforcement, and a fibrous reinforcement having a surface modified with the above polyimide.The polyimide comprise a requisite structural unit having one or more recurring structural units of the formula: ##STR1## wherein m and n are individually an integer of 0 or 1, and R is ##STR2## The polyimide of the invention is essentially amorphous, excellent in melt flow stability in the decreased temperature as compared with conventionally known polyimide and has greatly improved processability.The polyimide of the invention obtained by using a novel aromatic diamino compound as a monomer can control various properties such as melt flow ability and solubility in solvents by side chains and not by principal chain of polyimide. Thus, excellent melt flow property and solubility in solvents can be obtained while maintaining high heat resistance and adhesive property which are derived from benzophenone structure of the diamino compound of the the invention.
    • 本发明涉及易溶于有机溶剂的新型热塑性和无定形聚酰亚胺,用于聚酰亚胺的新型芳族二氨基化合物及其制备方法,包含热塑性聚酰亚胺和纤维增强剂的聚酰亚胺基树脂组合物, 用于制备树脂组合物的树脂组合物的注塑制品,通过将上述可溶性和热塑性聚酰亚胺与纤维增强剂组合成型而获得的聚酰亚胺类复合材料和具有用上述聚酰亚胺改性的表面的纤维增强剂。 聚酰亚胺包含必需的结构单元,其具有一个或多个下式的重复结构单元:其中m和n分别为0或1的整数,R为本发明的聚酰亚胺基本上为 与常规已知的聚酰亚胺相比,在降低的温度下的熔体流动稳定性优异并且具有极大的改进的加工性。 通过使用新颖的芳族二氨基化合物作为单体获得的本发明的聚酰亚胺可以通过侧链而不是聚酰亚胺的主链来控制各种性能如熔体流动性和在溶剂中的溶解度。 因此,在保持由本发明的二氨基化合物的二苯甲酮结构得到的高耐热性和粘合性的同时,可以获得优异的熔体流动性和溶剂中的溶解性。