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71. 发明授权

US4572804A Preparation of unsaturated isocyanates 失效
标题翻译：不饱和异氰酸酯的制备
公开(公告)号：US4572804A
公开(公告)日：1986-02-25
申请号：US682528
申请日：1984-12-17
申请人： Michael J. Mullins
发明人： Michael J. Mullins
IPC分类号： C07C263/04 , C07C118/00
CPC分类号： C07C263/04
摘要： Prepare .alpha.,.beta.-unsaturated monoisocyanates by pyrolyzing .alpha.,.beta.-saturated geminal bis-carbamates.
摘要翻译：通过热解α，β饱和孪生双氨基甲酸酯制备α，β-不饱和单异氰酸酯。

72. 发明授权

US4530796A Process for the preparation of isocyanates through the thermal cleavage of urethanes 失效
标题翻译：通过热解聚氨酯制备异氰酸酯的方法
公开(公告)号：US4530796A
公开(公告)日：1985-07-23
申请号：US664782
申请日：1984-10-25
申请人： Otto Mattner , Franz Merger , Friedrich Towae
发明人： Otto Mattner , Franz Merger , Friedrich Towae
IPC分类号： C07B43/10 , C07B31/00 , C07C67/00 , C07C69/00 , C07C241/00 , C07C263/04 , C07C265/00 , C07C265/04 , C07C265/12
CPC分类号： C07C263/04
摘要： A process for the pyrolysis of mono-, di-, and polyurethanes to the corresponding mono-, di-, and polyisocyanates wherein the urethane to be cleaved is heated under pressure and sprayed through a nozzle into a pyrolysis chamber maintained at reduced pressure. The isocyanate and alcohol cleavage products are separated by fractional condensation.
摘要翻译：将单 - ，二 - 和聚氨酯热分解为相应的单 - ，二 - 和多异氰酸酯的方法，其中将待裂解的聚氨酯在压力下加热并通过喷嘴喷射到保持在减压下的热解室中。异氰酸酯和醇裂解产物通过分级冷凝分离。

73. 发明授权

US4439616A Tertiary aralkyl urethanes and isocyanates derived therefrom 失效
标题翻译：叔烷基氨基甲酸酯和衍生自其的异氰酸酯
公开(公告)号：US4439616A
公开(公告)日：1984-03-27
申请号：US400799
申请日：1982-07-22
申请人： Balwant Singh , Laurence W. Chang , Peter S. Forgione
发明人： Balwant Singh , Laurence W. Chang , Peter S. Forgione
IPC分类号： C07C263/04 , B05D7/26 , C07C67/00 , C07C239/00 , C07C241/00 , C07C265/00 , C07C265/08 , C07C265/14 , C07C269/02 , C07C269/06 , C07C271/06 , C07C271/10 , C08G18/76 , C07C125/073 , C07C125/065
CPC分类号： C08G18/765 , C07C263/04
摘要： Production of tertiary aralkyl isocyanates, such as tetramethyl xylylene diisocyanates, by thermal cracking of corresponding urethanes formed by addition of corresponding olefins and carbamic acid esters at moderate temperatures and in the presence of acid catalyst.
摘要翻译：通过在中等温度和酸催化剂的存在下通过加入相应的烯烃和氨基甲酸酯形成的相应的聚氨酯的热裂解，生产叔芳烷基异氰酸酯，如四甲基亚二甲苯基二异氰酸酯。

74. 发明授权

US4369141A Process to improve isocyanate yield upon pyrolysis of a polyfunctional urethane which has been extracted with a combination of hydrochloric acid and alcohol 失效
标题翻译：通过盐酸和醇的组合提取的多官能氨基甲酸酯热分解提高异氰酸酯收率的方法
公开(公告)号：US4369141A
公开(公告)日：1983-01-18
申请号：US295951
申请日：1981-08-24
申请人： John F. Motier
发明人： John F. Motier
IPC分类号： C07C263/04 , C07C271/06 , C07C118/00 , C07C125/07
CPC分类号： C07C263/04
摘要： In the process of producing polyisocyanates by(a) condensing an alkyl-N-phenylcarbamate having 1 to 3 carbons in the alkyl moiety with formaldehyde, paraformaldehyde a formaldehyde forming compound such as trioxane in the presence of an acid to produce a condensate containing a mixture of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates with by-product N-benzyl compounds, rearranging said N-benzyl compounds in said condensate with acid catalyst to obtain a pyrolysis feed mixture containing a mixture of diphenylmethane dicarbamates and polymethylene polyphenyl carbamates with by-product amine and amine salts, and(b) thermally decomposing the carbamate moieties in the pyrolysis feed mixture to isocyanate moieties to produce a polyisocyanate mixture of diphenylmethane diisocyanates and polymethylene polyphenyl isocyanates,the improvement comprises increasing the percent isocyanate content of said polyisocyanates by prior to step (b) removing the amine and amine salt by-products by extracting the pyrolysis feed mixture with a solution of an alkanol having 1 to 4 carbon atoms in the alkyl moiety and aqueous hydrochloric acid, and then removing the alcohol-hydrochloric acid extract.
摘要翻译：在（a）在酸存在下，通过（a）将烷基部分中具有1至3个碳原子的烷基-N-苯基氨基甲酸酯与甲醛，多聚甲醛和形成甲醛的化合物如三恶烷进行缩合生产多异氰酸酯的方法，以产生含有混合物的冷凝物的二苯基甲烷二氨基甲酸酯和聚亚甲基多苯基氨基甲酸酯与副产物N-苄基化合物，用酸催化剂重排所述缩合物中的所述N-苄基化合物，得到含有二苯基甲烷二氨基甲酸酯和聚亚甲基多苯基氨基甲酸酯与副产物胺的混合物的热解进料混合物，胺盐，和（b）将热解原料混合物中的氨基甲酸酯部分热分解成异氰酸酯部分以产生二苯基甲烷二异氰酸酯和多亚甲基多苯基异氰酸酯的多异氰酸酯混合物，其改进包括在步骤（b）之前增加所述多异氰酸酯的异氰酸酯含量百分比）除去胺和胺盐通过在烷基部分和盐酸水溶液中用具有1至4个碳原子的链烷醇的溶液萃取热解进料混合物，然后除去醇 - 盐酸提取物来产生副产物。

75. 发明授权

US4294774A Preparation of organic isocyanates 失效
标题翻译：有机异氰酸酯的制备
公开(公告)号：US4294774A
公开(公告)日：1981-10-13
申请号：US206747
申请日：1980-11-14
申请人： Thomas R. Henson , John F. Timberlake
发明人： Thomas R. Henson , John F. Timberlake
IPC分类号： C07C263/04 , C07C67/00 , C07C241/00 , C07C265/00 , C07C118/00
CPC分类号： C07C263/04
摘要： A process for the preparation of an organic isocyanate by preparing a heated solution of an alkyl carbamate in a N,N-dialkyl aniline compound solvent which is catalytic with respect to the rate of decomposition of the carbamate but unreactive with respect to the organic isocyanate decomposition product.
摘要翻译：一种通过在N，N-二烷基苯胺化合物溶剂中制备氨基甲酸烷基酯的加热溶液来制备有机异氰酸酯的方法，该催化剂相对于氨基甲酸酯的分解速率是催化剂的，但相对于有机异氰酸酯分解是不活泼的产品。

76. 发明授权

US4290970A Process for the manufacture of aromatic di- and/or polyisocyanates 失效
标题翻译：用于制备芳族二 - 和/或多异氰酸酯的方法
公开(公告)号：US4290970A
公开(公告)日：1981-09-22
申请号：US196814
申请日：1980-10-14
申请人： Franz Merger , Friedrich Towae
发明人： Franz Merger , Friedrich Towae
IPC分类号： C07C265/14 , C07C67/00 , C07C241/00 , C07C263/04 , C07C265/12 , C07C271/06 , C07C118/00 , C07C125/07
CPC分类号： C07C263/04
摘要： This invention pertains to a process for the preparation of an aromatic di- and/or polyisocyanate comprising the steps ofA. preparing an aromatic di- and/or polyurethane by1. reacting a primary aromatic di- and/or polyamine with an O-alkyl carbamate at temperatures greater than 100.degree. C.;2. separating the ammonia and other by-products from the aromatic di- and/or polyurethane;B. heating and the aromatic di- and/or polyurethane at temperatures of from 175.degree. C. to 600.degree. C.; andC. isolating the di- and/or polyisocyanate resulting from step B.
摘要翻译：本发明涉及一种制备芳族二 - 和/或多异氰酸酯的方法，包括以下步骤：A.通过使主芳族二 - 和/或多胺与O- 氨基甲酸烷基酯在大于100℃的温度下进行。 2.将氨和其它副产物与芳族二 - 和/或聚氨酯分离; B.在175℃至600℃的温度下加热芳族二和/或聚氨酯。和C.分离由步骤B得到的二异氰酸酯和/或多异氰酸酯。

77. 发明授权

US4162263A Manufacture of aliphatic or cycloaliphatic isocyanates 失效
标题翻译：脂肪族或脂环族异氰酸酯的制造
公开(公告)号：US4162263A
公开(公告)日：1979-07-24
申请号：US867145
申请日：1978-01-05
申请人： Fritz Zanker
发明人： Fritz Zanker
IPC分类号： C07C265/00 , C07C20060101 , C07C65/03 , C07C67/00 , C07C241/00 , C07C263/04 , C07C265/04 , C07C118/00
CPC分类号： C07C263/04 , C07C2101/14
摘要： Aliphatic and cycloaliphatic isocyanates are manufactured by thermal decomposition of aliphatic or cycloaliphatic carbamic acid chlorides in the presence of an inert organic solvent of lower boiling point than that of the isocyanate formed. The decomposition is carried out in a reaction vessel surmounted by a rectifying unit, which in turn is surmounted by a reflux condenser, the isocyanate formed being condensed in the rectifying unit at a temperature above the boiling point of the solvent.
摘要翻译：脂肪族和脂环族异氰酸酯是通过脂族或脂环族氨基甲酸氯化物在比形成的异氰酸酯的低沸点惰性有机溶剂存在下热分解来制备的。分解在由整流单元所覆盖的反应容器中进行，该精馏装置反过来由回流冷凝器覆盖，所形成的异氰酸酯在高于溶剂沸点的温度下在精馏装置中冷凝。

78. 发明授权

US4146550A Process for the preparation of an aliphatic monoisocyanate 失效
标题翻译：制备脂肪族单异氰酸酯的方法
公开(公告)号：US4146550A
公开(公告)日：1979-03-27
申请号：US817082
申请日：1977-07-18
申请人： Wolfgang Reichmann , Klaus Konig
发明人： Wolfgang Reichmann , Klaus Konig
IPC分类号： C07C265/02 , C07C20060101 , C07C67/00 , C07C241/00 , C07C263/04 , C07C265/04 , C07C118/00
CPC分类号： C07C263/04
摘要： This invention relates to an improved process for the preparation of an aliphatic monoisocyanate from the corresponding carbamic acid chloride. The carbamic acid chloride is reacted with an active hydrogen compound. The reaction is conducted in the presence of a solvent which is inert under the reaction conditions. Addition compounds are formed with the elimination of hydrogen chloride. The addition compounds are subsequently decomposed by heat into the desired isocyanate with the mixture also containing the active hydrogen compound. The monoisocyanate is subsequently removed by distillation.
摘要翻译：本发明涉及从相应的氨基甲酰氯制备脂族单异氰酸酯的改进方法。使氨基甲酰氯与活性氢化合物反应。反应在反应条件下为惰性溶剂的存在下进行。加入化合物是通过消除氯化氢而形成的。加入的化合物随后通过加热分解成所需的异氰酸酯，混合物中也含有活性氢化合物。随后通过蒸馏除去单异氰酸酯。

79. 发明授权

US4133868A Isocyanates process III 失效
标题翻译：异氰酸酯工艺III
公开(公告)号：US4133868A
公开(公告)日：1979-01-09
申请号：US825057
申请日：1977-08-16
申请人： Robert K. Jordan
发明人： Robert K. Jordan
IPC分类号： C01C3/14 , C07C263/04 , C07C118/00
CPC分类号： C07C263/04
摘要： A process for producing isocyanates along with hydrogen fluoride and metal carboxylates by reacting a metal salt of an N-organic carbamic acid, RNHCO.sub.2 M, and an acyl fluoride.
摘要翻译：通过使N-有机氨基甲酸的金属盐RNHCO 2 M与酰基氟反应来制造异氰酸酯以及氟化氢和金属羧酸盐的方法。

80. 发明授权

US3366662A Process for preparing isocyanates 失效
标题翻译：异氰酸酯的制备方法
公开(公告)号：US3366662A
公开(公告)日：1968-01-30
申请号：US34879964
申请日：1964-03-02
申请人： OLIN MATHIESON
发明人： KOBER EHRENFRIED H , ERIC SMITH
IPC分类号： C07C263/04
CPC分类号： C07C263/04 , C07C265/12 , C07C265/14 , C07C265/04

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