利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

19 条记录 (耗时 0.052 秒)

    Space environmentally durable polyimides and copolyimides
    4.
    发明授权
    Space environmentally durable polyimides and copolyimides 失效
    空间环保的聚酰亚胺和共聚酰亚胺

    公开(公告)号：US07109287B2

    公开(公告)日：2006-09-19

    申请号：US10988407

    申请日：2004-11-08

    申请人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother ,  Kent A. Watson ,  Craig M. Thompson

    发明人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother ,  Kent A. Watson ,  Craig M. Thompson

    IPC分类号： C08G69/26

    CPC分类号： C08G73/1071 ,  C08G73/10 ,  C08G73/1014 ,  C08G73/1039 ,  C08G73/1057 ,  C08G73/1067

    摘要： Polyimides displaying low color in thin films, atomic oxygen resistance, vacuum ultraviolet radiation resistance, solubility in organic solvents in the imide form, high glass transition (Tg) temperatures, and high thermal stability are provided. The poly(amide acid)s, copoly(amide acid)s, polyimides and copolyimides are prepared by the reaction of stoichiometric ratios of an aromatic dianhydride with diamines which contain phenylphosphine oxide groups in polar aprotic solvents. Controlled molecular weight oligomeric (amide acid)s and imides can be prepared by offsetting the stoichiometry according to the Carothers equation using excess diamine and endcapping with aromatic anhydrides. The polyimide materials can be processed into various material forms such as thin films, fibers, foams, threads, adhesive film, coatings, dry powders, and fiber coated prepreg, and uses include thin film membranes on antennas, second-surface mirrors, thermal optical coatings, and multi-layer thermal insulation (MLI) blanket materials.

    摘要翻译： 提供在薄膜中显示低色的聚酰亚胺，原子氧电阻，真空紫外线辐射抗性，在酰亚胺形式的有机溶剂中的溶解度，高玻璃化转变温度和高热稳定性。 聚（酰胺酸），共聚（酰胺酸），聚酰亚胺和共聚酰亚胺通过芳族二酐与极性非质子溶剂中含有苯基氧化膦基团的二胺的化学计量比的反应来制备。 控制分子量的低聚（酰胺酸）和酰亚胺可以通过使用过量的二胺和用芳族酸酐封端根据Carothers方程来抵消化学计量来制备。 聚酰亚胺材料可以加工成各种材料形式，如薄膜，纤维，泡沫，线，粘合膜，涂料，干粉和纤维涂层预浸料，其中包括天线薄膜，第二面反光镜，热光学 涂层和多层保温（MLI）覆层材料。

    Space environmentally durable polyimides and copolyimides
    6.
    发明授权
    Space environmentally durable polyimides and copolyimides 失效
    空间环保的聚酰亚胺和共聚酰亚胺

    公开(公告)号：US06841652B2

    公开(公告)日：2005-01-11

    申请号：US10095340

    申请日：2002-03-08

    申请人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother ,  Kent A. Watson ,  Craig M. Thompson

    发明人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother ,  Kent A. Watson ,  Craig M. Thompson

    IPC分类号： C08G73/10 ,  C08G69/26 ,  C08G69/72

    CPC分类号： C08G73/1071 ,  C08G73/10 ,  C08G73/1014 ,  C08G73/1039 ,  C08G73/1057 ,  C08G73/1067

    摘要： Polyimides displaying low color in thin films, atomic oxygen resistance, vacuum ultraviolet radiation resistance, solubility in organic solvents in the imide form, high glass transition (Tg) temperatures, and high thermal stability are provided. The poly(amide acid)s, copoly(amide acid)s, polyimides and copolyimides are prepared by the reaction of stoichiometric ratios of an aromatic dianhydride with diamines which contain phenylphosphine oxide groups in polar aprotic solvents. Controlled molecular weight oligomeric (amide acid)s and imides can be prepared by offsetting the stoichiometry according to the Carothers equation using excess diamine and endcapping with aromatic anhydrides The polyimide materials can be processed into various material forms such as thin films, fibers, foams, threads, adhesive film, coatings, dry powders, and fiber coated prepreg, and uses include thin film membranes on antennas, second-surface mirrors, thermal optical coatings, and multi-layer thermal insulation (MLI) blanket materials.

    摘要翻译： 提供在薄膜中显示低色的聚酰亚胺，原子氧电阻，真空紫外线辐射抗性，在酰亚胺形式的有机溶剂中的溶解度，高玻璃化转变温度和高热稳定性。 聚（酰胺酸），共聚（酰胺酸），聚酰亚胺和共聚酰亚胺通过芳族二酐与极性非质子溶剂中含有苯基氧化膦基团的二胺的化学计量比的反应来制备。 控制分子量低聚（酰胺酸）和酰亚胺可以通过使用过量的二胺和用芳族酸酐封端根据Carothers方程来抵消化学计量来制备。聚酰亚胺材料可以加工成各种材料形式，例如薄膜，纤维，泡沫， 螺纹，粘合剂膜，涂料，干粉和纤维涂层预浸料，并且包括天线上的薄膜膜，第二表面反射镜，热光学涂层和多层保温（MLI）覆盖材料。

    Phenylethynyl containing reactive additives
    7.
    发明授权
    Phenylethynyl containing reactive additives 失效

    公开(公告)号：US06441099B1

    公开(公告)日：2002-08-27

    申请号：US09726297

    申请日：2000-11-28

    申请人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother

    发明人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother

    IPC分类号： C08J300

    CPC分类号： C08G73/101 ,  C08F251/00 ,  C08F281/00 ,  C08F290/14 ,  C08G73/10

    摘要： Phenylethynyl containing reactive additives were prepared from aromatic diamines containing phenylethynyl groups and various ratios of phthalic anhydride and 4-phenylethynylphthalic anhydride in glacial acetic acid to form the imide in one step or in N-methyl-2-pyrrolidinone to form the amide acid intermediate. The reactive additives were mixed in various amounts (10% to 90%) with oligomers containing either terminal or pendent phenylethynyl groups (or both) to reduce the melt viscosity and thereby enhance processability. Upon thermal cure, the additives react and become chemically incorporated into the matrix and effect an increase in crosslink density relative to that of the host resin. This resultant increase in crosslink density has advantageous consequences on the cured resin properties such as higher glass transition temperature and higher modulus as compared to that of the host resin.

    Polybenzimidazoles via aromatic nucleophilic displacement
    8.
    发明授权
    Polybenzimidazoles via aromatic nucleophilic displacement 失效
    聚苯并咪唑通过芳族亲核取代

    公开(公告)号：US5637670A

    公开(公告)日：1997-06-10

    申请号：US376170

    申请日：1995-01-20

    申请人： John W. Connell ,  Paul M. Hergenrother ,  Joseph G. Smith, Jr.

    发明人： John W. Connell ,  Paul M. Hergenrother ,  Joseph G. Smith, Jr.

    IPC分类号： C08G73/18 ,  C09J179/04 ,  C08G73/08

    CPC分类号： C08G73/18 ,  C09J179/04 ,  Y10S526/935 ,  Y10T428/31504

    摘要： Novel molecular weight controlled and endcapped polybenzimidazoles (PBI) are prepared by the aromatic nucleophilic displacement reaction of di(hydroxyphenylbenzimidazole) monomers with activated aromatic dihalides or activated aromatic dinitro compounds. The PBI are endcapped with mono(hydroxyphenyl)benzimidazoles. The polymerizations are carried out in polar aprotic solvents such as N-methyl-2-pyrrolidinone or N,N-dimethylacetamide using alkali metal bases such as potassium carbonate at elevated temperatures under nitrogen. Mono(hydroxyphenyl)benzimidazoles are synthesized by reacting phenyl-4-hydroxybenzoate with aromatic (o-diamine)s in diphenylsulfone. Molecular weight controlled and endcapped PBI of new chemical structures are prepared that exhibit a favorable combination of physical and mechanical properties.

    摘要翻译： 通过二（羟基苯基苯并咪唑）单体与活性芳族二卤化物或活性芳族二硝基化合物的芳族亲核置换反应制备新型分子量控制和封端的聚苯并咪唑（PBI）。 PBI被单（羟基苯基）苯并咪唑封端。 聚合在极性非质子溶剂如N-甲基-2-吡咯烷酮或N，N-二甲基乙酰胺中，使用碱金属碱如碳酸钾，在氮气下在升高的温度下进行。 通过苯基-4-羟基苯甲酸酯与二苯砜中的芳族（邻二胺）反应合成单（羟基苯基）苯并咪唑。 制备新化学结构的分子量控制和封端的PBI，其表现出物理和机械性质的有利组合。

    Poly(N-arylenebenzimidazole)s via aromatic nucleophilic displacement
    9.
    发明授权
    Poly(N-arylenebenzimidazole)s via aromatic nucleophilic displacement 失效
    聚（N-亚芳基苯并咪唑）通过芳族亲核取代

    公开(公告)号：US5554715A

    公开(公告)日：1996-09-10

    申请号：US375334

    申请日：1995-01-17

    申请人： John W. Connell ,  Paul M. Hergenrother ,  Joseph G. Smith, Jr.

    发明人： John W. Connell ,  Paul M. Hergenrother ,  Joseph G. Smith, Jr.

    IPC分类号： C08G73/18

    CPC分类号： C08G73/18

    摘要： Novel poly(N-arylenebenzimidazole)s (PNABls) are prepared by the aromatic nucleophilic displacement reaction of novel di(hydroxyphenyl-N-arylene benzimidazole) monomers with activated aromatic dihalides or activated aromatic dinitro compounds. The polymerizations are carried out in polar aprotic solvents such as N-methyl-2-pyrrolidinone or N,N-dimethylacetamide using alkali metal bases such as potassium carbonate at elevated temperatures under nitrogen. The di(hydroxyphenyl-N-arylenebenzimidazole) monomers are synthesized by reacting phenyl-4-hydroxybenzoate with bis(2-aminoanilino)arylenes in diphenylsulfone. Moderate molecular weight PNABIs of new chemical structures were prepared that exhibit a favorable combination of physical and mechanical properties. The use of the novel di(hydroxyphenyI-N-arylenebenzimidazole)s permits a more economical and easier way to prepare PNABIs than previous routes.

    摘要翻译： 通过新型二（羟基苯基-N-亚芳基苯并咪唑）单体与活性芳族二卤化物或活性芳族二硝基化合物的芳族亲核置换反应制备新型聚（N-亚芳基苯并咪唑）（PNABls）。 聚合在极性非质子溶剂如N-甲基-2-吡咯烷酮或N，N-二甲基乙酰胺中，使用碱金属碱如碳酸钾，在氮气下在升高的温度下进行。 二（羟基苯基-N-亚芳基苯并咪唑）单体通过苯基-4-羟基苯甲酸酯与二（2-氨基苯胺基）亚芳基在二苯基砜中反应合成。 制备中等分子量的新化学结构的PNABI，其表现出物理和机械性能的有利组合。 新型二（羟基苯基）-N-亚芳基苯并咪唑的使用允许比以前的路线更经济和更容易的制备PNABI的方法。

    Diamines containing pendent phenylethynyl groups
    10.
    发明授权
    Diamines containing pendent phenylethynyl groups 失效
    含有侧基苯乙炔基的二胺

    公开(公告)号：US5689004A

    公开(公告)日：1997-11-18

    申请号：US747472

    申请日：1996-11-12

    申请人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother

    发明人： John W. Connell ,  Joseph G. Smith, Jr. ,  Paul M. Hergenrother

    IPC分类号： C08J5/18 ,  B32B27/34 ,  C07C217/90 ,  C07C225/22 ,  C08G73/10 ,  C09J179/08 ,  C07C317/36

    CPC分类号： C07C217/90 ,  C07C225/22 ,  C08G73/101 ,  C08G73/1042 ,  C08G73/1078 ,  C09J179/08 ,  Y10S526/935 ,  Y10T428/31504 ,  Y10T428/31721

    摘要： Controlled molecular weight imide oligomers and co-oligomers containing pendent phenylethynyl groups (PEPIs) and endcapped with nonreactive or phenylethynyl groups have been prepared by the cyclodehydration of the precursor amide acid oligomers or co-oligomers containing pendent phenylethynyl groups and endcapped with nonreactive or phenylethynyl groups. The amine terminated amide acid oligomers or co-oligomers are prepared from the reaction of dianhydride(s) with an excess of diamine(s) and diamine containing pendent phenylethynyl groups and subsequently endcapped with a phenylethynyl phthalic anhydride or monofunctional anhydride. The anhydride terminated amide acid oligomers and co-oligomers are prepared from the reaction of diamine(s) and diamine containing pendent phenylethynyl group(s) with an excess of dianhydride(s) and subsequently endcapped with a phenylethynyl amine or monofunctional amine. The polymerizations are carried out in polar aprotic solvents such as N-methyl-2-pyrrolidinone and N,N-dimethylacetamide under nitrogen at room temperature. The amide acid oligomers or co-oligomers are subsequently cyclodehydrated either thermally or chemically to the corresponding imide oligomers. The polymers and copolymers prepared from these materials exhibit a unique and unexpected combination of properties that includes higher glass transition temperatures after curing and higher retention of neat resin, adhesive and carbon fiber reinforced mechanical properties at temperatures up to 204.degree. C. under wet conditions without sacrificing melt flow behavior and processability as compared to similar materials. These materials are useful as adhesives, coatings, films, moldings and composite matrices.

    摘要翻译： 已经通过将含有侧链苯基乙炔基的前体酰胺酸低聚物或共低聚物环状脱水并用非反应性或苯基乙炔基封端而制备了含有侧链苯基乙炔基（PEPI）和封端有非反应性或苯基乙炔基的受控分子量酰亚胺低聚物和共低聚物 。 胺封端的酰胺酸低聚物或共低聚物由二酐与过量的二胺和含有侧基苯基乙炔基的二胺的反应制备，随后用苯基乙炔基邻苯二甲酸酐或单官能酐封端。 酸酐封端的酰胺酸低聚物和共低聚物由二胺和含有侧基苯乙炔基的二胺与过量的二酐的反应制备，随后用苯乙炔胺或单官能胺封端。 聚合在极性非质子溶剂如N-甲基-2-吡咯烷酮和N，N-二甲基乙酰胺中，在室温下在氮气下进行。 酰胺酸低聚物或共低聚物随后热或化学地与相应的酰亚胺低聚物环化脱水。 由这些材料制备的聚合物和共聚物表现出独特和意想不到的性能组合，其包括固化后较高的玻璃化转变温度和更高的纯树脂保留率，粘合剂和碳纤维增强的机械性能在高达204℃的温度下在潮湿条件下没有 与类似材料相比，牺牲熔体流动行为和加工性能。 这些材料可用作粘合剂，涂料，薄膜，模制品和复合基质。