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1.发明授权Curing agent for polyepoxides and epoxy resins and composites cured therewith 失效用于聚环氧化物和环氧树脂的固化剂以及用其固化的复合材料
公开(公告)号：US4244857A
公开(公告)日：1981-01-13
申请号：US70771
申请日：1979-08-30
IPC分类号： C07D209/48 , C08G59/40 , C08K5/3412 , C08K7/06 , C07D207/06 , C08G59/02
CPC分类号： C07D209/48 , C08G59/4042 , C08K5/3412
摘要： A curing agent for a polyepoxide has the formula: ##STR1## wherein R.sub.1 is a divalent aryl radical such as phenylene and wherein R.sub.2 is a tetravalent aryl radical such as a tetravalent benzene radical. An epoxide is cured by admixture with the curing agent. The cured epoxy product retains the usual properties of cured epoxides and, in addition, has a high char residue after burning, on the order of 45% by weight. The high char residue is of value in preventing release to the atmosphere of carbon fibers from carbon fiber-epoxy resin composites in the event of burning of the composite.
摘要翻译： 聚环氧化物的固化剂具有下式：其中R 1是二价芳基如亚苯基，其中R 2是四价芳基如四价苯基。 环氧化物与固化剂混合固化。 固化的环氧树脂产品保留了固化的环氧化物的通常性质，此外，燃烧后具有高焦炭残留量，约为45重量％。 在燃烧复合材料的情况下，高焦炭残留物在防止碳纤维环氧树脂复合材料的碳纤维气氛中的释放是有价值的。
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公开(公告)号：US4244853A
公开(公告)日：1981-01-13
申请号：US27557
申请日：1979-04-06
申请人： Tito T. Serafini , Peter Delvigs
发明人： Tito T. Serafini , Peter Delvigs
CPC分类号： C08G73/10 , C08G73/101 , C08J5/24 , D06M15/59 , C08J2379/08
摘要： A composition for making polyimide resin-reinforced fibers or fabric. The composition is of the type disclosed in U.S. Pat. No. 3,745,149 and includes a polyfunctional ester, a polyfunctional amine, and an end-capping agent. The composition is impregnated into fibers or fabric and heated to form prepreg material. The tack retention characteristics of this prepreg material are improved by incorporating into the composition a liquid olefinic material compatible with the other ingredients of the composition. The prepreg material is heated at a higher temperature to effect formation of the polyimide resin and the monomeric additive is incorporated in the polyimide polymer structure.
摘要翻译： 用于制造聚酰亚胺树脂增强纤维或织物的组合物。 该组合物是在美国专利No. 包括多官能酯，多官能胺和封端剂。 将组合物浸渍到纤维或织物中并加热以形成预浸料材料。 通过在组合物中加入与组合物的其它成分相容的液体烯烃材料，可改进该预浸料坯材的粘着保持性能。 将预浸料材料在较高温度下加热以形成聚酰亚胺树脂，并将单体添加剂加入到聚酰亚胺聚合物结构中。
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公开(公告)号：US5149772A
公开(公告)日：1992-09-22
申请号：US824090
申请日：1992-01-22
IPC分类号： C08L79/08 , C07D405/14 , C08F290/00 , C08F299/02 , C08G73/10 , C08G73/12
CPC分类号： C07D405/14 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/12 , C08G73/121
摘要： Polyimides having a high thermal and oxidative stability are prepared by reacting a mixture of monomers comprising (a) a dialkyl, trialkyl, or tetraalkylester of an aromatic tetracarboxylic acid, (b) an aromatic diamine, and (c) an end cap compound. The ratio of (a), (b), and (c) is chosen so that upon heating the mixtures, low molecular weight prepolymers are formed, the prepolymers having only one end cap radical and being suitable for chain extension and crosslinking to form high molecular weight, thermally stable polyimides. Upon heating, the prepolymers form polyimide resins, which can have T.sub.g in excess of 600.degree. F. and superior physical properties.
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公开(公告)号：US5149760A
公开(公告)日：1992-09-22
申请号：US824089
申请日：1992-01-22
IPC分类号： C07D405/14 , C08G73/10 , C08G73/12
CPC分类号： C07D405/14 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/12 , C08G73/121
摘要： Polyimides having a high thermal and oxidative stability are prepared by reacting a mixture of monomers comprising (a) a dialkyl, trialkyl, or tetraalkylester of an aromatic tetracarboxylic acid, (b) an aromatic diamine, and (c) an end cap compound. The ratio of (a), (b), and (c) is chosen so that upon heating the mixtures, low molecular weight prepolymers are formed, the prepolymers having only one end cap radical and being suitable for chain extension and crosslinking to form high molecular weight, thermally stable polyimides. Upon heating, the prepolymers form polyimide resins, which can have T.sub.g in excess of 600.degree. F. and superior physical properties.
摘要翻译： 通过使包含（a）芳族四羧酸的二烷基，三烷基或四烷基酯，（b）芳族二胺和（c）端帽化合物）的单体的混合物反应来制备具有高热和氧化稳定性的聚酰亚胺。 选择（a），（b）和（c）的比例使得在加热混合物时，形成低分子量预聚物，预聚物仅具有一个端帽基，适用于链延长和交联以形成高 分子量，热稳定的聚酰亚胺。 加热后，预聚物形成聚酰亚胺树脂，其Tg可以超过600°F，具有优异的物理性能。
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公开(公告)号：US5338827A
公开(公告)日：1994-08-16
申请号：US816304
申请日：1991-12-27
IPC分类号： C07D209/48 , C07D405/14 , C08F290/00 , C08F299/02 , C08G73/10 , C08G73/12 , C08G69/26 , C08G63/08 , C08G75/00 , C08L67/00
CPC分类号： C07D209/48 , C07D405/14 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/121
摘要： Polyimide resins useful at high temperatures are prepared from:(a) a dialkyl, trialkyl or tetraalkylester of biphenyltetracarboxylic acid;(b) phenylenediamine, preferably the phenylenediamine comprises a mixture of meta-and para-phenylenediamine; and(c) a divalent end cap compound that is capable of undergoing addition polymerization.
摘要翻译： 用于高温的聚酰亚胺树脂由以下物质制备：（a）联苯四羧酸的二烷基，三烷基或四烷基酯; （b）苯二胺，优选苯二胺包括间苯二胺和对苯二胺的混合物; 和（c）能够进行加成聚合的二价端帽化合物。
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6.发明授权
公开(公告)号：US5432001A
公开(公告)日：1995-07-11
申请号：US265581
申请日：1994-06-23
申请人： Tito T. Serafini , Paul G. Cheng , Ward F. Wright
发明人： Tito T. Serafini , Paul G. Cheng , Ward F. Wright
IPC分类号： C08L79/08 , C07D209/48 , C07D405/14 , C08G73/10 , C08G73/12 , C09D179/08 , D02G3/40
CPC分类号： C07D405/14 , C07D209/48 , C08G73/1007 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/1032 , C08G73/121 , C09D179/08 , Y10T428/2913 , Y10T428/2924 , Y10T428/2933 , Y10T428/2969 , Y10T428/31721
摘要： A method for forming a homogeneous, concentrated, prepolymer composition, and a method of using the concentrated prepolymer composition to uniformly coat fibers is described. The prepolymer mixture is formed by dissolving a dialkyl, trialkyl, or tetraalkylester of biphenyltetracarboxylic acid in a solvent comprising ethyl acetate and methanol in a molar ratio of from about 1:3 to about 1:60, to form an ester solution. Diamine and end cap compound are added to the ester solution to form a monomer mixture solution. The end cap compound is a divalent compound characterized by (i) at least one unsaturated moiety, (ii) capable of reacting with the diamine or the ester to form an end cap radical that precludes further reaction of the diamine with the ester, and (iii) capable of undergoing addition polymerization. A portion of the solvent is evaporated from the monomer solution to form the substantially homogeneous, concentrated, prepolymer composition. The concentrated prepolymer composition is used to uniformly coat fibers by heating the composition to an elevated temperature to form a prepolymer melt and applying the prepolymer melt to fibers. An article of manufacture comprising fibers and polyimide can be formed by heating the prepolymer coated fibers to the cross-linking temperature of the prepolymers.
摘要翻译： 描述了形成均匀，浓缩的预聚物组合物的方法，以及使用浓缩预聚物组合物均匀地涂覆纤维的方法。 通过将联苯四羧酸的二烷基，三烷基或四烷基酯溶解在包含乙酸乙酯和甲醇的摩尔比为约1:3至约1:60的溶剂中形成预聚物混合物，以形成酯溶液。 将二胺和端帽化合物加入到酯溶液中以形成单体混合物溶液。 端帽化合物是二价化合物，其特征在于：（i）至少一个不饱和部分，（ii）能够与二胺或酯反应以形成端基自由基，其排除二胺与酯的进一步反应，和（ iii）能够进行加成聚合。 一部分溶剂从单体溶液中蒸发形成基本均匀的浓缩预聚物组合物。 浓缩预聚物组合物用于通过将组合物加热至高温来均匀地涂布纤维以形成预聚物熔体并将预聚物熔体施加到纤维上。 可以通过将预聚物涂布的纤维加热至预聚物的交联温度来形成包含纤维和聚酰亚胺的制品。
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公开(公告)号：US5091505A
公开(公告)日：1992-02-25
申请号：US472036
申请日：1990-01-30
IPC分类号： C08L79/08 , C07D405/14 , C08F290/00 , C08F299/02 , C08G73/10 , C08G73/12
CPC分类号： C07D405/14 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/12 , C08G73/121
摘要： Polyimides having a high thermal and oxidative stability are prepared by reacting a mixture of monomers comprising (a) a dialkyl, trialkyl, or tetraalkylester of an aromatic tetracarboxylic acid, (b) an aromatic diamine, and (c) an end cap compound. The ratio of (a), (b), and (c) is chosen so that upon heating the mixtures, low molecular weight prepolymers are formed, the prepolymers having only one end cap radical and being suitable for chain extension and crosslinking to form high molecular weight, thermally stable polyimides. Upon heating, the prepolymers form polyimide resins, which can have T.sub.g in excess of 600.degree. F. and superior physical properties.
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公开(公告)号：US5461138A
公开(公告)日：1995-10-24
申请号：US399032
申请日：1995-03-06
申请人： Tito T. Serafini , Paul G. Cheng , Ward F. Wright
发明人： Tito T. Serafini , Paul G. Cheng , Ward F. Wright
IPC分类号： C08L79/08 , C07D209/48 , C07D405/14 , C08G73/10 , C08G73/12 , C09D179/08 , C08G69/26
CPC分类号： C07D405/14 , C07D209/48 , C08G73/1007 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/1032 , C08G73/121 , C09D179/08 , Y10T428/2913 , Y10T428/2924 , Y10T428/2933 , Y10T428/2969 , Y10T428/31721
摘要： A method for forming a homogeneous, concentrated, prepolymer composition, and a method of using the concentrated prepolymer composition to uniformly coat fibers is described. The prepolymer mixture is formed by dissolving a dialkyl, trialkyl, or tetraalkylester of biphenyltetracarboxylic acid in a solvent comprising ethyl acetate and methanol in a molar ratio of from about 1:3 to about 1:60, to form an ester solution. Diamine and end cap compound are added to the ester solution to form a monomer mixture solution. The end cap compound is a divalent compound characterized by (i) at least one unsaturated moiety, (ii) capable of reacting with the diamine or the ester to form an end cap radical that precludes further reaction of the diamine with the ester, and (iii) capable of undergoing addition polymerization. A portion of the solvent is evaporated from the monomer solution to form the substantially homogeneous, concentrated, prepolymer composition. The concentrated prepolymer composition is used to uniformly coat fibers by heating the composition to an elevated temperature to form a prepolymer melt and applying the prepolymer melt to fibers. An article of manufacture comprising fibers and polyimide can be formed by heating the prepolymer coated fibers to the cross-linking temperature of the prepolymers.
摘要翻译： 描述了形成均匀，浓缩的预聚物组合物的方法，以及使用浓缩预聚物组合物均匀地涂覆纤维的方法。 通过将联苯四羧酸的二烷基，三烷基或四烷基酯溶解在包含乙酸乙酯和甲醇的摩尔比为约1:3至约1:60的溶剂中形成预聚物混合物，以形成酯溶液。 将二胺和端帽化合物加入到酯溶液中以形成单体混合物溶液。 端帽化合物是二价化合物，其特征在于：（i）至少一个不饱和部分，（ii）能够与二胺或酯反应以形成端基自由基，其排除二胺与酯的进一步反应，和（ iii）能够进行加成聚合。 一部分溶剂从单体溶液中蒸发形成基本均匀的浓缩预聚物组合物。 浓缩预聚物组合物用于通过将组合物加热至高温来均匀地涂布纤维以形成预聚物熔体并将预聚物熔体施加到纤维上。 可以通过将预聚物涂布的纤维加热至预聚物的交联温度来形成包含纤维和聚酰亚胺的制品。
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9.发明授权
公开(公告)号：US5461137A
公开(公告)日：1995-10-24
申请号：US399031
申请日：1995-03-06
申请人： Tito T. Serafini , Paul G. Cheng , Ward F. Wright
发明人： Tito T. Serafini , Paul G. Cheng , Ward F. Wright
IPC分类号： C08L79/08 , C07D209/48 , C07D405/14 , C08G73/10 , C08G73/12 , C09D179/08 , C08G69/26
CPC分类号： C07D405/14 , C07D209/48 , C08G73/1007 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/1032 , C08G73/121 , C09D179/08 , Y10T428/2913 , Y10T428/2924 , Y10T428/2933 , Y10T428/2969 , Y10T428/31721
摘要： A method for forming a homogeneous, concentrated, prepolymer composition, and a method of using the concentrated prepolymer composition to uniformly coat fibers is described. The prepolymer mixture is formed by dissolving a dialkyl, trialkyl, or tetraalkylester of biphenyltetracarboxylic acid in a solvent comprising ethyl acetate and methanol in a molar ratio of from about 1:3 to about 1:60, to form an ester solution. Diamine and end cap compound are added to the ester solution to form a monomer mixture solution. The end cap compound is a divalent compound characterized by (i) at least one unsaturated moiety, (ii) capable of reacting with the diamine or the ester to form an end cap radical that precludes further reaction of the diamine with the ester, and (iii) capable of undergoing addition polymerization. A portion of the solvent is evaporated from the monomer solution to form the substantially homogeneous, concentrated, prepolymer composition. The concentrated prepolymer composition is used to uniformly coat fibers by heating the composition to an elevated temperature to form a prepolymer melt and applying the prepolymer melt to fibers. An article of manufacture comprising fibers and polyimide can be formed by heating the prepolymer coated fibers to the cross-linking temperature of the prepolymers.
摘要翻译： 描述了形成均匀，浓缩的预聚物组合物的方法，以及使用浓缩预聚物组合物均匀地涂覆纤维的方法。 通过将联苯四羧酸的二烷基，三烷基或四烷基酯溶解在包含乙酸乙酯和甲醇的摩尔比为约1:3至约1:60的溶剂中形成预聚物混合物，以形成酯溶液。 将二胺和端帽化合物加入到酯溶液中以形成单体混合物溶液。 端帽化合物是二价化合物，其特征在于：（i）至少一个不饱和部分，（ii）能够与二胺或酯反应以形成端基自由基，其排除二胺与酯的进一步反应，和（ iii）能够进行加成聚合。 一部分溶剂从单体溶液中蒸发形成基本均匀的浓缩预聚物组合物。 浓缩预聚物组合物用于通过将组合物加热至高温来均匀地涂布纤维以形成预聚物熔体并将预聚物熔体施加到纤维上。 可以通过将预聚物涂布的纤维加热至预聚物的交联温度来形成包含纤维和聚酰亚胺的制品。
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公开(公告)号：US5132395A
公开(公告)日：1992-07-21
申请号：US472198
申请日：1990-01-30
IPC分类号： C07D405/14 , C08G73/10 , C08G73/12
CPC分类号： C07D405/14 , C08G73/101 , C08G73/1014 , C08G73/1017 , C08G73/121 , Y10S525/925 , Y10S525/928
摘要： Polyimides having a high thermal and oxidative stability are prepared by reacting a mixture of monomers comprising (a) a dialkyl, trialkyl, or teThis invention was made with Government support under F33615-88-C-5409 awarded by the Department of the Air force. The Government has certain rights in this invention.
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