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公开(公告)号：US06326460B1
公开(公告)日：2001-12-04
申请号：US09622307
申请日：2000-08-16
IPC分类号： C08G6946
摘要： Polyamide particles, or polymer particles comprising polyamides, are extracted with aqueous solutions of aminonitiles and optionally further polyamide-forming monomers, polyamide-forming oligomers or mixtures thereof.
摘要翻译： 包含聚酰胺的聚酰胺颗粒或聚合物颗粒用氨基腈水溶液和任选的其它聚酰胺形成单体，聚酰胺形成的低聚物或其混合物的水溶液萃取。
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公开(公告)号：US06353085B1
公开(公告)日：2002-03-05
申请号：US09622321
申请日：2000-08-16
IPC分类号： C08G6914
摘要： In a process for producing polyamides by polymerization of lactams in the presence of metal oxides as heterogeneous catalysts, the metal oxides are used in a form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of or on completion of the polymerization.
摘要翻译： 在作为非均相催化剂的金属氧化物存在下通过内酰胺聚合制备聚酰胺的方法中，金属氧化物以允许从反应混合物中机械除去并在完成过程中从反应混合物中除去的形式使用金属氧化物 的聚合。
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公开(公告)号：US06548626B1
公开(公告)日：2003-04-15
申请号：US09980522
申请日：2001-12-03
IPC分类号： C08G6902
摘要： A process for producing polyamides by reacting at least one lactam and optionally further polyamide-forming monomers with aqueous monomer and oligomer extracts obtained during the extraction with water of the polymer product obtained in the production of polyamides, the water content of the reaction mixture being in the range from 0.5 to 13% by weight comprises conducting the reaction in the presence of metal oxides, beta-zeolites, sheet-silicates or silica gels, which may be doped, as heterogeneous catalysts, the heterogeneous catalysts being used in the form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture in the course of the polymerization or after it has ended.
摘要翻译： 通过使至少一种内酰胺和任选的另外的聚酰胺形成单体与在提取期间获得的聚合物产物中获得的单体和低聚物提取物的水反应制备聚酰胺的方法，反应混合物的水含量在 0.5至13重量％的范围包括在金属氧化物，β-沸石，片状硅酸盐或二氧化硅凝胶的存在下进行反应，其可以掺杂作为多相催化剂，以允许的形式使用的多相催化剂 在反应混合物中机械除去并在聚合过程中或在其结束后从反应混合物中除去。
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公开(公告)号：US06288207B1
公开(公告)日：2001-09-11
申请号：US09600958
申请日：2000-07-25
IPC分类号： C08G6904
摘要： The continuous process for producing a polyamide by reacting at least one aminonitrile with water comprises the following steps: (1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 15×106 Pa in a flow tube containing packing elements of a Brönsted acid catalyst selected from beta-zeolite, sheet-silicate or titanium dioxide packing elements and metallic packing elements to obtain a reaction mixture, (2) further reacting the reaction mixture at from 150 to 400° C. and a pressure which is lower than the pressure in step 1, the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or first solid phase or the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 370° C. and a pressure from 0.1 to 30×106 Pa to obtain a product mixture.
摘要翻译： 通过使至少一种氨基腈与水反应生产聚酰胺的连续方法包括以下步骤：（1）在90至400℃的温度和0.1至15×10 6 Pa的压力下使至少一种氨基腈与水反应， 含有选自β-沸石，片状硅酸盐或二氧化钛填料的布朗斯台德酸催化剂的填充元件和金属填充元素的流动管，以获得反应混合物，（2）使反应混合物在150-400℃下进一步反应 和低于步骤1中的压力的压力，选择温度和压力以获得第一气相和第一液体或第一固相或第一固体和第一液相的混合物，第一 气相与第一液体或第一固相或第一液体和第一固相的混合物分离，和（3）混合第一液体或第一固相或第一液体和第一固体p的混合物 在含有水的温度为150〜370℃，压力为0.1〜30×10 6 Pa的气相或液相中搅拌，得到产物混合物。
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5.发明授权Method for producing polyamide 6 of a low extract content, high viscosity stability and low remonomerization rate 失效低提取物含量的聚酰胺6的制备方法，高粘度稳定性和低再聚合速率公开(公告)号：US06525167B1
公开(公告)日：2003-02-25
申请号：US09913122
申请日：2001-08-09
IPC分类号： C08G6904
摘要： The continuous process for producing polyamides by reacting at least one aminonitrile with water comprises the following steps: (10) reacting at least one aminonitrile with water at a temperature of from 200 to 290° C. at a pressure of from 40 to 70 bar in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed, (11) diabatically or adiabatically expanding the reaction mixture from step (1) into a first separation zone to a pressure of from 20 to 40 bar, the pressure being at least 10 bar lower than the pressure in step (1), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer, (12) further reacting the reaction mixture from step (2) in the presence of water at a temperature of from 200 to 290° C. and a pressure of from 25 to 55 bar and in the presence or absence of a Brönsted acid catalyst selected from a beta-zeolite, sheet-silicate or metal oxide catalyst in the form of a fixed bed, (13) diabatically or adiabatically expanding the reaction mixture from step (3) into a second separation zone to a pressure of from 0.01 to 20 bar, the pressure being at least 20 bar lower than the pressure in step (3), and to a temperature within the range from 220 to 290° C. by flash evaporation and removal of ammonia, water and any aminonitrile monomer and oligomer.
摘要翻译： 通过使至少一种氨基腈与水反应生产聚酰胺的连续方法包括以下步骤：（10）在200至290℃的温度下，在40至70巴的压力下使至少一种氨基腈与水反应， 含有布朗斯台德酸催化剂的流动管，其选自固体床形式的β-沸石，硅酸盐或金属氧化物催化剂，（11）将反应混合物从步骤（1）进行绝热或绝热膨胀到第一分离区 压力为20至40巴，压力比步骤（1）中的压力低至少10巴，并且通过闪蒸和除去氨，水的温度在220至290℃的范围内 和任何氨基腈单体和低聚物，（12）在水存在下，在200-290℃的温度和25至55巴的压力下，使步骤（2）的反应混合物进一步反应，并在 没有布朗斯台德酸催化剂选择f 以固定床形式的β-沸石，片状硅酸盐或金属氧化物催化剂（13）将步骤（3）的反应混合物从第二分离区中分离或绝热膨胀至压力为0.01至20巴 ，压力比步骤（3）中的压力低至少20巴，并通过闪蒸和氨，水和任何氨基腈单体和低聚物的除去而达到220-290℃的温度。
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公开(公告)号：US06531570B1
公开(公告)日：2003-03-11
申请号：US09806147
申请日：2001-03-28
IPC分类号： C08G6904
摘要： Disclosed are the use of lactams, aminocarboxylic acids or mixtures thereof as acceleratant or cocatalyst in the production of polyamides from aminonitriles and water, and a suitable process therefor.
摘要翻译： 公开了在由氨基腈和水制备聚酰胺中使用内酰胺，氨基羧酸或其混合物作为加速剂或助催化剂及其合适的方法。
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公开(公告)号：US06316588B1
公开(公告)日：2001-11-13
申请号：US09600957
申请日：2000-07-25
IPC分类号： C08G6900
摘要： A continuous process for preparing a polyamide by reacting at least one aminonitrile with water comprises: (1) reacting at least one aminonitrile with water at a temperature from 90 to 400° C. and a pressure from 0.1 to 35×106 Pa in a flow tube containing a Brönsted acid catalyst selected from a beta-zeolite catalyst, a sheet-silicate catalyst or a titanium dioxide catalyst comprising from 70 to 100% by weight of anatase and from 0 to 30% by weight of rutile and in which up to 40% by weight of the titanium dioxide may be replaced by tungsten oxide to obtain a reaction mixture, (2) further reacting the reaction mixture at a temperature from 150 to 400° C. and a pressure which is lower than the pressure in step 1, in the presence of a Brönsted acid catalyst as in (1), the temperature and pressure being selected so as to obtain a first gas phase and a first liquid or a first solid phase or a mixture of first solid and first liquid phase, and the first gas phase is separated from the first liquid or the first solid phase or from the mixture of first liquid and first solid phase, and (3) admixing the first liquid or the first solid phase or the mixture of first liquid and first solid phase with a gaseous or liquid phase comprising water at a temperature from 150 to 370° C. and a pressure from 0.1 to 30×106 Pa to obtain a product mixture.
摘要翻译： 通过使至少一种氨基腈与水反应制备聚酰胺的连续方法包括：（1）在90-400℃的温度和0.1至35×10 6 Pa的压力下使至少一种氨基腈与水反应， 选自β-沸石催化剂，片状硅酸盐催化剂或二氧化钛催化剂的布朗斯台德酸催化剂，其包含70至100重量％的锐钛矿和0至30重量％的金红石，其中至多40重量％ 二氧化钛的重量可以被氧化钨代替以获得反应混合物，（2）使反应混合物在150-400℃的温度和低于步骤1的压力的压力下反应，在 存在如（1）中所述的布朗斯台德酸催化剂，选择温度和压力以获得第一气相和第一液体或第一固相或第一固体和第一液相的混合物，并且第一气体 相与杉木分离 第一液体或第一固相或第一液体和第一固相的混合物，和（3）将第一液体或第一固相或第一液体和第一固相的混合物与包含水的气相或液相混合 温度为150〜370℃，压力为0.1〜30×10 6 Pa，得到产物混合物。
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8.发明授权公开(公告)号：US06590064B1
公开(公告)日：2003-07-08
申请号：US09889158
申请日：2001-07-11
IPC分类号： C08G6914
摘要： Described is the use of metal oxides as heterogeneous catalysts in a process for producing polyamides by polymerization of lactams and optionally further polyamide-forming monomers wherein the metal oxides are used in a form which permits mechanical removal from the reaction mixture and are removed from the reaction mixture during or after the polymerization, to reduce the extractables content of the polyamide obtained.
摘要翻译： 描述了在通过聚合内酰胺和任选的其它聚酰胺形成单体制备聚酰胺的方法中使用金属氧化物作为非均相催化剂，其中金属氧化物以允许从反应混合物中机械除去并从反应中除去的形式使用 聚合期间或之后的混合物，以降低获得的聚酰胺的可萃取物含量。
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公开(公告)号：US06569988B1
公开(公告)日：2003-05-27
申请号：US09979123
申请日：2001-11-19
IPC分类号： C08G6900
摘要： In a process for producing polyamides, a mixture comprising hexamethylenediamine and aminocapronitrile and obtained from the hydrogenation of adiponitrile is reacted with water and a dicarboxylic acid.
摘要翻译： 在制备聚酰胺的方法中，将由己二胺和氨基己腈组成的并由己二腈加氢得到的混合物与水和二羧酸反应。
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公开(公告)号：US06362307B1
公开(公告)日：2002-03-26
申请号：US09622337
申请日：2000-08-16
IPC分类号： C08G6900
摘要： Polyamides are produced by reacting aminocarboxylic acid compounds of the general formula I H2N—(CH2)m—COR1 (I) where R1 is OH, O—C1-12-alkyl or NR2R3, where R2 and R3 are independently hydrogen, C1-12-alkyl or C5-8-cycloalkyl, and m is an integer from 3 to 12, optionally in a mixture with aminonitriles and their hydrolysis products and optionally in the presence of water, in a liquid phase at elevated pressure and elevated temperature in the presence of metal oxides as heterogeneous catalysts, the metal oxides being used in a form which permits mechanical removal from the reaction mixture and being removed from the reaction mixture during or after the polymerization.
摘要翻译： 聚酰胺通过使通式I的氨基羧酸化合物反应来制备，其中R 1是OH，O-C 1-12 - 烷基或NR 2 R 3，其中R 2和R 3独立地是氢，C 1-12 - 烷基或C 5-8 - 环烷基，m是 在金属氧化物作为非均相催化剂的情况下，在升高的压力和升高的温度下，在液相中，任选地与氨基腈及其水解产物和其水解产物的混合物，任选地与氨基腈及其水解产物的混合物，任选地与氨基腈及其水解产物的混合物， 以允许从反应混合物机械除去并在聚合期间或之后从反应混合物中除去的形式。
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