Polyimide molding powder, coating, adhesive and matrix resin
    2.
    发明授权
    Polyimide molding powder, coating, adhesive and matrix resin 失效
    聚酰亚胺成型粉末,涂料,粘合剂和基体树脂

    公开(公告)号:US5147966A

    公开(公告)日:1992-09-15

    申请号:US560717

    申请日:1990-07-31

    IPC分类号: C08G73/10

    摘要: The invention is a novel polyimide prepared from 3,4'-oxydianiline (3,4'-ODA) and 4,4'-oxydiphthalic anhydride (ODPA), in 2-methoxyethyl ether (diglyme). The polymer has been prepared in ultra high molecular weight and in a controlled molecular weight form which has a 2.5 percent offset is stoichiometry (excess diamine) with a 5.0 percent level of phthalic anhydride as an endcap. This controlled molecular weight form allows for greatly improved processing of the polymer for moldings, adhesive bonding, and composite fabrication. The higher molecular weight version affords tougher films and coatings. The overall polymer structure groups in the dianhydride, the diamine, and a metal linkage in the diamine affords adequate flow properties for making this polymer useful as a molding powder, adhesive, and matrix resin.

    摘要翻译: 本发明是由3,4-氧代二苯胺(3,4'-ODA)和4,4'-氧联二邻苯二甲酸酐(ODPA)在2-甲氧基乙醚(二甘醇二甲醚)中制备的新型聚酰亚胺。 聚合物已经以超高分子量和受控的分子量形式制备,其具有2.5%的偏移量是化学计量(过量二胺),5.0%邻苯二甲酸酐作为端帽。 这种受控的分子量形式允许用于模制品,粘合剂粘合和复合材料制造的聚合物的大大改进的处理。 更高的分子量版本提供更坚韧的膜和涂层。 在二酐中的整体聚合物结构基团,二胺和二胺中的金属键提供了足够的流动性能,用于使该聚合物用作成型粉末,粘合剂和基质树脂。

    Copolyimide with a combination of flexibilizing groups
    3.
    发明授权
    Copolyimide with a combination of flexibilizing groups 失效
    具有柔性基团组合的共聚酰亚胺

    公开(公告)号:US4837300A

    公开(公告)日:1989-06-06

    申请号:US71686

    申请日:1987-07-09

    IPC分类号: C08G73/10

    摘要: Novel copolyimides are prepared by reacting one or more aromatic dianhydrides with a meta-substituted phenylene diamine and an aromatic bridged diamine. The incorporation of meta-substituted phenylene diamine derived units and bridged aromatic diamine derived units into the linear aromatic polymer backbone results in a copolyimide of improved flexibility, processability, and melt-flow characteristics. The novel copolyimides are especially useful as thermoplastic hot-melt adhesives.

    摘要翻译: 通过使一种或多种芳族二酸酐与间位取代的苯二胺和芳族桥连二胺反应制备新型共聚酰亚胺。 将间位取代的苯二胺衍生的单元和桥连的芳族二胺衍生的单元并入线性芳族聚合物主链中导致具有改进的柔性,加工性和熔体流动特性的共聚酰亚胺。 新型共聚酰亚胺特别适用于热塑性热熔胶。

    Polyimide adhesives
    5.
    发明授权
    Polyimide adhesives 失效
    聚酰亚胺粘合剂

    公开(公告)号:US4065345A

    公开(公告)日:1977-12-27

    申请号:US734901

    申请日:1976-10-22

    摘要: A process of preparing aromatic polyamide-acids for use as adhesives by reacting an aromatic dianhydride to an approximately equimolar amount of an aromatic diamine in a water or lower alkanol miscible ether solvent and wherein the polyamide-acids are converted to polyimides by heating to the temperature range of 200.degree. - 300.degree. C. and wherein the polyimides are thermally stable and insoluble in ethers and other organic solvents.

    摘要翻译: 通过使芳族二酐与水或低级链烷醇混溶性醚溶剂中的大约等摩尔量的芳族二胺反应制备用作粘合剂的芳族聚酰胺酸的方法,其中通过加热至温度将聚酰胺酸转化为聚酰亚胺 范围为200-300℃,其中聚酰亚胺是热稳定的,不溶于醚和其它有机溶剂。

    Aromatic polyimides containing a dimethylsilane-linked dianhydride
    6.
    发明授权
    Aromatic polyimides containing a dimethylsilane-linked dianhydride 失效
    含有二甲基硅烷的二酐的芳族聚酰亚胺

    公开(公告)号:US5093453A

    公开(公告)日:1992-03-03

    申请号:US449210

    申请日:1989-12-12

    IPC分类号: C08G73/10

    CPC分类号: C08G73/106

    摘要: A high-temperature stable, optically transparent, low dielectric aromatic polyimide is prepared by chemically combining equimolar quantities of an aromatic dianhydride reactant and an aromatic diamine reactant, which are selected so that one reactant contains at least one Si(CH.sub.3).sub.2 group in its molecular structure, and the other reactant contains at least one --CH.sub.3 group in its molecular structure. The reactants are chemically combined in a solvent medium to form a solution of a high molecular weight polyamic acid, which is then converted to the corresponding polyimide.

    摘要翻译: 通过化学组合等摩尔量的芳族二酐反应物和芳族二胺反应物来制备高温稳定的光学透明低介电芳族聚酰亚胺,其选择为使得一种反应物在其中含有至少一个Si(CH 3)2基团 分子结构,另一反应物在其分子结构中含有至少一个-CH 3基团。 将反应物在溶剂介质中化学组合以形成高分子量聚酰胺酸的溶液,然后将其转化为相应的聚酰亚胺。

    Poly(carbonate-imide) polymer
    8.
    发明授权
    Poly(carbonate-imide) polymer 失效
    聚(碳酸酯 - 酰亚胺)聚合物

    公开(公告)号:US4713439A

    公开(公告)日:1987-12-15

    申请号:US834978

    申请日:1986-02-27

    IPC分类号: C08G69/44 C08G69/26

    CPC分类号: C08G69/44

    摘要: A novel series of polymers and copolymers based on a polyimide backbone with the incorporation of carbonate moieties along the backbone. The process for preparing these polymers and copolymers is also disclosed as is a novel series of dinitrodiphenyl carbonates and diaminodiphenyl carbonates. The novel polymers and copolymers exhibit high temperature capability and because of the carbonate unit, many exhibit a high degree of order and/or crystallinity.

    摘要翻译: 一种基于聚酰亚胺骨架的新型聚合物和共聚物系列,其中沿骨架加入碳酸酯部分。 还公开了制备这些聚合物和共聚物的方法,是一系列新的一系列二硝基二苯基碳酸酯和二氨基二苯基碳酸酯。 新型聚合物和共聚物表现出高温能力,并且由于碳酸酯单元,许多表现出高度的顺序和/或结晶度。

    Polyimide processing additives
    10.
    发明授权
    Polyimide processing additives 失效
    聚酰亚胺加工助剂

    公开(公告)号:US5272248A

    公开(公告)日:1993-12-21

    申请号:US892058

    申请日:1992-05-22

    摘要: A process for preparing polyamides having enhanced melt flow properties is described. The process consists of heating a mixture of a high molecular weight poly(amic acid) or polyimide with a low molecular weight amic acid or imide additive in the range of 0.05 to 15% by weight of additive. The polyimide powders so obtained show improved processability, as evidenced by lower melt viscosity by capillary rheometry. Likewise, films prepared from mixtures of polymers with additives show improved processability with earlier onset of stretching by TMA.

    摘要翻译: 描述了一种制备具有增强的熔体流动性能的聚酰胺的方法。 该方法包括将高分子量聚(酰胺酸)或聚酰亚胺与低分子量酰胺酸添加剂的混合物加入0.05至15重量%的添加剂。 如此获得的聚酰亚胺粉末显示出改进的加工性能,如通过毛细管流变测定法的较低熔体粘度所证明的。 同样,由聚合物与添加剂的混合物制备的薄膜也显示改善的加工性能,并且通过TMA早期开始拉伸。