公开(公告)号：US4654441A

公开(公告)日：1987-03-31

申请号：US265550

申请日：1981-05-20

申请人： Kurt F. Stephan ,  John T. Stephan ,  Steven R. Klein

发明人： Kurt F. Stephan ,  John T. Stephan ,  Steven R. Klein

IPC分类号： A23K50/15 ,  C07C273/18 ,  C07C275/62 ,  C07C127/24

CPC分类号： C07C273/1881 ,  A23K50/15

摘要： Process for the production of technical grade biuret, readily in a form suitable for use as animal feed, by the controlled pyrolysis of urea in two stages, the first stage involving the partial pyrolysis of urea at a temperature above the melting point of urea to produce a first stage intermediate reaction product containing from about 20% to about 60% urea, and not more than about 25% cyanuric acid by weight, such reaction product being then cooled and comminuted, the comminuted product then being subjected, in solid form and in the absence of a liquid carrier, to a temperature at or slightly below the softening point of the solid particulate (suitable at a temperature of from about 100.degree. C. to about 140.degree. C.) with forced air circulation through the comminuted product for a sufficient time to lower its urea content by partial sublimation of the urea and partial further reaction thereof to biuret with only minimal further conversion of urea to cyanuric acid. Crystallization and cooling of the molten intermediate product resulting from the first stage of pyrolyzation is advantageously accelerated by addition thereof of a powdered seed material, preferably including powdered feed grade biuret from a previous run, which additive serves to also increase the melting point of the product and thus increase the temperature at which it may be heated during the solid state pyrolyzation.

摘要翻译： 用于生产技术级缩二脲的方法，容易以适合用作动物饲料的形式，通过尿素在两个阶段的受控热解，第一阶段涉及在高于尿素熔点的温度下部分热解尿素以产生 含有按重量计约20％至约60％尿素和不多于约25％氰尿酸的第一级中间反应产物，然后将该反应产物冷却并粉碎，然后将粉碎产物以固体形式和 不存在液体载体，达到或稍低于固体颗粒的软化点的温度（适合于约100℃至约140℃），强制空气通过粉碎产品循环通过粉碎产物 有足够的时间通过尿素的部分升华来降低其尿素含量，并且其部分进一步的反应转化为缩二脲，只有尿素进一步转化成三聚氰酸。 由第一阶段热解产生的熔融中间体产物的结晶和冷却有利地通过加入粉末种子材料来加速，优选包括来自之前的流程的粉末状进料级缩二脲，该添加剂还用于增加产物的熔点 并且因此在固态热解期间增加其可被加热的温度。

公开(公告)号：US4373080A

公开(公告)日：1983-02-08

申请号：US105356

申请日：1979-12-19

申请人： Wolfgang Reichmann ,  Klaus Konig ,  Manfred Schonfelder

发明人： Wolfgang Reichmann ,  Klaus Konig ,  Manfred Schonfelder

IPC分类号： C08G18/00 ,  C07C67/00 ,  C07C239/00 ,  C07C275/62 ,  C08G18/78 ,  C08G18/80 ,  C07C127/24

CPC分类号： C08G18/7831 ,  C07C275/62 ,  C08G18/7818 ,  C08G18/8038 ,  Y02P20/582

摘要： The present invention relates to a process for the production of specific polyisocyanates by reacting diamines containing hydrogen atoms which are active in the context of the isocyanate addition reaction with excess quantities of organic diisocyanates. The invention also relates to a modification of the above process characterized in that the diamines are reacted first with excess quantities of a first diisocyanate after which the thus obtained reaction product which contains a urea group and a biuret group is reacted in a second stage with a second diisocyanate. The invention also relates to the use of polyisocyanates as the isocyanate component in the production of polyurethane plastics by the isocyanate-polyaddition process.

摘要翻译： 本发明涉及通过使异氰酸酯加成反应中有活性的含有氢原子的二胺与过量的有机二异氰酸酯反应制备特定的多异氰酸酯的方法。 本发明还涉及上述方法的改进，其特征在于二胺首先与过量的第一种二异氰酸酯反应，然后将由此得到的包含脲基和缩二脲基的反应产物在第二阶段与 第二异氰酸酯。 本发明还涉及通过异氰酸酯加聚方法在聚氨酯塑料生产中使用多异氰酸酯作为异氰酸酯组分。

公开(公告)号：US4355138A

公开(公告)日：1982-10-19

申请号：US282285

申请日：1981-07-10

申请人： Peter Markusch ,  George A. Hudson, deceased ,  by Richard L. White, administrator

发明人： Peter Markusch ,  George A. Hudson, deceased ,  by Richard L. White, administrator

IPC分类号： C07C275/62 ,  C08G18/80 ,  C08G18/78 ,  C07C127/24

CPC分类号： C07C275/62 ,  C08G18/8064

摘要： The present invention is directed to light stable polyisocyanate adduct mixtures with an average functionality greater than 2.0 and an isocyanate content of between about 4 and 19 percent by weight based on solids, which has good compatibility with apolar solvents and good storage stability in a solution of polyisocyanate solvents. The polyisocyanate adduct mixtures are based on the reaction product of a polyisocyanate, preferably a biuret-containing polyisocyanate, with a first monohydroxy compound containing a saturated hydrocarbon chain of at least 8 carbon atoms and a second monohydroxy compound containing at least one polarity inducing group. Alternatively, both the saturated hydrocarbon chain and the polarity inducing group may be present in the same monohydroxy compound.The present invention is additionally directed to the use of the polyisocyanate adduct mixtures in the process of curing alkyd or acrylic resins and to compositions containing the adduct mixture and alkyd or acrylic resins.

摘要翻译： 本发明涉及平均官能度大于2.0且异氰酸酯含量为约4至19重量％的基于固体的轻质稳定多异氰酸酯加合物混合物，其与非极性溶剂具有良好的相容性，并且在溶液中具有良好的储存稳定性 多异氰酸酯溶剂。 多异氰酸酯加合物混合物基于多异氰酸酯，优选含缩二脲的多异氰酸酯与含有至少8个碳原子的饱和烃链的第一单羟基化合物和含有至少一个极性诱导基团的第二单羟基化合物的反应产物。 或者，饱和烃链和极性诱导基团可以存在于相同的单羟基化合物中。 本发明另外涉及在固化醇酸树脂或丙烯酸树脂的方法中使用多异氰酸酯加合物混合物以及含有加合物混合物和醇酸树脂或丙烯酸树脂的组合物。

公开(公告)号：US4293713A

公开(公告)日：1981-10-06

申请号：US134556

申请日：1980-03-27

申请人： Hajime Fujimura ,  Yasuzo Hiramatsu ,  Takahiro Yabuuchi ,  Masakatu Hisaki ,  Katsuo Takikawa ,  Takaji Honna ,  Hidekazu Miyake ,  Makoto Kajitani

发明人： Hajime Fujimura ,  Yasuzo Hiramatsu ,  Takahiro Yabuuchi ,  Masakatu Hisaki ,  Katsuo Takikawa ,  Takaji Honna ,  Hidekazu Miyake ,  Makoto Kajitani

IPC分类号： A61K31/17 ,  A61P25/04 ,  A61P29/00 ,  C07C67/00 ,  C07C239/00 ,  C07C275/62 ,  C07C127/24

CPC分类号： C07C275/62 ,  Y10S514/916

摘要： A novel 1,1,3,5-substituted biuret compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are respectively the same or different, and each are alkyl groups having 1 to 4 carbon atoms; R.sup.3 is a cyclohexyl group or a phenyl group which may be unsubstituted or may have at least one substituent selected from the group consisting of chlorine, bromine, fluorine, methyl, trifluoromethyl, dimethylamino, methoxy, methylthio, nitro and acetyl. The novel 1,1,3,5-substituted biuret compounds are useful as an analgesic, anti-inflammatory and/or anti-pyretic agent.

摘要翻译： 下式的新型1,1,3,5-取代缩二脲化合物：其中R 1和R 2分别相同或不同，并且各自为具有1至4个碳原子的烷基; R3是可以是未取代的或可以具有至少一个选自氯，溴，氟，甲基，三氟甲基，二甲基氨基，甲氧基，甲硫基，硝基和乙酰基的取代基的环己基或苯基。 新型1,1,3,5-取代的缩二脲化合物可用作止痛剂，抗炎剂和/或抗热解剂。

公开(公告)号：US4152350A

公开(公告)日：1979-05-01

申请号：US850888

申请日：1977-11-14

申请人： Edgar Mohring ,  Kuno Wagner ,  Hanns P. Muller

发明人： Edgar Mohring ,  Kuno Wagner ,  Hanns P. Muller

IPC分类号： C08G18/00 ,  C07C67/00 ,  C07C239/00 ,  C07C275/60 ,  C07C275/62 ,  C08G18/78 ,  C07C127/24

CPC分类号： C07C275/60 ,  C08G18/7831 ,  C07C2101/14

摘要： This invention relates to an improved process for the preparation of polyisocyanate mixtures containing biuret groups by the reaction of organic diisocyanates with compounds which react with isocyanate groups to form biuret groups, to the polyisocyanate mixtures obtained by this process and to the use thereof for the preparation of polyurethane resins by the isocyanate polyaddition process.

公开(公告)号：US3758572A

公开(公告)日：1973-09-11

申请号：US3758572D

申请日：1971-04-26

申请人： DOW CHEMICAL CO

发明人： JONES I ,  RHYMES A

IPC分类号： C01C1/08 ,  C01C1/12 ,  C07C273/16 ,  C07C127/24

CPC分类号： C01C1/086 ,  C01C1/12 ,  C07C273/16

摘要： In a process of pyrolyzing urea in a reactor system through which a stream of inert gas is passed to accelerate the rate of pyrolysis by purging evolved ammonia therefrom, an improved method for recovering unreacted vaporized urea also purged by the gas stream with the ammonia which comprises passing the condensable vapors of an inert compound through the reactor (s), cooling the purged ammonia and urea containing vapor mixture to a temperature low enough to condense the vapors of the inert compound thereby minimizing the concentration of this component in the vapor mixture, but high enough to preclude urea condensation, feeding the resulting concentrated vapor mixture to a gas/liquid contacting column and contacting the same with fresh urea melt feedstock, thereby condensing a substantial amount of the urea vapor contacted, feeding the condensed urea along with the urea melt feedstock to the pyrolysis reactor(s), and passing the urea depleted effluent vapor mixture to a conventional ammonia recovery unit.

摘要翻译： 在反应器系统中热解尿素的过程中，惰性气体流通过该反应器系统以通过从其中吹扫放出的氨来加速热解速率，用于回收未被反应的蒸发的尿素的改进方法，其也由氨气吹扫， 使惰性化合物的可冷凝蒸气通过反应器，将净化的氨和含尿素的蒸汽混合物冷却到足够低的温度以冷凝惰性化合物的蒸气，从而使蒸气混合物中该组分的浓度最小化，但是 足够高以排除尿素冷凝，将所得的浓缩蒸汽混合物送入气体/液体接触塔并将其与新鲜的尿素熔融原料接触，由此冷凝大量的尿素蒸气接触，将尿素与尿素熔体一起进料 进料到热解反应器，并将尿素贫化的流出物蒸汽混合物通入常规的a mmonia回收单位。

公开(公告)号：US4816600A

公开(公告)日：1989-03-28

申请号：US97308

申请日：1987-09-14

申请人： Herbert R. Gillis, Jr.

发明人： Herbert R. Gillis, Jr.

IPC分类号： C07C273/18 ,  C08G18/10 ,  C08G18/50 ,  C08G18/78 ,  C07C127/24

CPC分类号： C07C273/1827 ,  C08G18/10 ,  C08G18/5024 ,  C08G18/7818 ,  C08G2120/00

摘要： Modified organic isocyanate composition containing urea and/or biuret groups and/or salts of these groups, obtained from the reaction of a blocked polyamine composition and an unblocked isocyanate composition.

摘要翻译： 由封闭的多胺组合物和未封端的异氰酸酯组合物的反应获得的含有脲和/或缩二脲基团和/或这些基团的盐的改性有机异氰酸酯组合物。

公开(公告)号：US4625052A

公开(公告)日：1986-11-25

申请号：US695144

申请日：1985-01-25

申请人： Klaus Konig ,  Josef Pedain ,  Helmut Woynar

发明人： Klaus Konig ,  Josef Pedain ,  Helmut Woynar

IPC分类号： C08G18/00 ,  C07C273/18 ,  C07C275/62 ,  C08G18/30 ,  C08G18/78 ,  C07C127/24

CPC分类号： C07C273/1863 ,  C07C273/1872 ,  C08G18/7831

摘要： The present invention is directed to a process for the production of polyisocyanates which have a biuret structure by reacting aliphatic diisocyanates with water at elevated temperature, characterized in that the reaction is carried out in the presence of:(a) .alpha., .alpha., .alpha.-tri-substituted acetic acids, which do not have any further isocyanate-reactive group other than the carboxyl group,and/or(b) anhydrides of acids of the type mentioned in (a)wherein up to 0.39 mols of component (a) are used per mol of water, up to about 2 mols of component (b) are used per mol of water, and the total quantity of components (a) and (b) is at least 0.02 to about 2 mols per mol of water.

摘要翻译： 本发明涉及通过在高温下使脂族二异氰酸酯与水反应而具有缩二脲结构的多异氰酸酯的方法，其特征在于反应在以下存在下进行：（a）α，α，α- （a）中提到的类型的酸类的酸酐，其中至多0.39摩尔的组分（a）是酸酐，其中不含羧基以外的任何其它异氰酸酯反应性基团的三取代的乙酸，和/ 每摩尔水使用多达约2摩尔组分（b），组分（a）和（b）的总量为每摩尔水至少0.02至约2摩尔。

公开(公告)号：US4613686A

公开(公告)日：1986-09-23

申请号：US695138

申请日：1985-01-25

申请人： Klaus Konig ,  Josef Pedain ,  Helmut Woynar

发明人： Klaus Konig ,  Josef Pedain ,  Helmut Woynar

IPC分类号： C08G18/00 ,  C07C67/00 ,  C07C239/00 ,  C07C273/18 ,  C07C275/62 ,  C08G18/30 ,  C08G18/78 ,  C07C127/24

CPC分类号： C07C273/1809 ,  C08G18/7831

摘要： The present invention relates to a process for the preparation of polyisocyanates which have a biuret structure of reacting excess quantities of aliphatic diisocyanates with biuretizing agents at elevated temperature, characterized in that the biuretizing agent contains(a) .alpha.,.alpha.,.alpha.-trisubstituted acetic acids which do not contain isocyanate-reactive groups apart from the carboxyl group, and optionally(b) water,wherein the molar ratio of biuretizing components (a) to (b) is within the range of from 1:0 to 1:2.5.

摘要翻译： 本发明涉及一种制备多异氰酸酯的方法，其具有在过高温度下使过量的脂族二异氰酸酯与缩合反应剂反应的缩二脲结构，其特征在于，缩二脲化合物含有（a）α，α，α-三取代的乙酸 其不包含除羧基以外的异氰酸酯反应性基团，和任选地（b）水，其中缩二脲化成分（a）至（b）的摩尔比在1:0至1:2.5的范围内。

公开(公告)号：US4540720A

公开(公告)日：1985-09-10

申请号：US401472

申请日：1982-07-26

申请人： Werner Rasshofer ,  Gerhard Grogler ,  Klaus Konig ,  Dieter Dieterich

发明人： Werner Rasshofer ,  Gerhard Grogler ,  Klaus Konig ,  Dieter Dieterich

IPC分类号： C08G18/00 ,  C07C67/00 ,  C07C209/00 ,  C07C209/62 ,  C07C211/13 ,  C08G18/10 ,  C08G18/32 ,  C08G18/50 ,  C08G18/64 ,  C08G18/83 ,  C07C127/15 ,  C07C127/24

CPC分类号： C08G18/83 ,  C08G18/10 ,  C08G18/5048 ,  C08G18/6415

摘要： The invention relates to a simplified, economic process for the production of polyamines by the alkaline hydrolysis of compounds containing terminal aromatic and/or aliphatic isocyanate groups (including modified isocyanates or NCO-prepolymers and semi-prepolymers with NCO-contents of from 0.5 to 40% by weight), with strong aqueous bases, direct isolation of the polyamines from the carbamate stage being possible by thermal carbamate decomposition and/or solvent extraction.The invention also relates to the use of the aromatic and/or aliphatic polyamines containing primary NH.sub.2 -groups obtainable by the process according to the invention for the production of polyurethanes, such as optionally cellular polyurethane plastics and polyurethane foams.

摘要翻译： 本发明涉及通过碱性水解含有末端芳族和/或脂族异氰酸酯基团的化合物（包括NCO-含量为0.5至40的改性异氰酸酯或NCO-预聚物和半预聚物来生产多胺的简化经济方法 通过强碱水溶液，通过热氨基甲酸酯分解和/或溶剂萃取可以直接从氨基甲酸酯阶段分离多胺。 本发明还涉及通过根据本发明的方法可获得的含有伯NH 2基团的芳族和/或脂族多胺用于生产聚氨酯，例如任选的细胞聚氨酯塑料和聚氨酯泡沫的用途。