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1.发明申请Production of di- and polyisocyanates of the diphenylmethane series with defined acidity 有权生产具有确定酸度的二苯基甲烷系列的二异氰酸酯和多异氰酸酯公开(公告)号：US20050240054A1
公开(公告)日：2005-10-27
申请号：US11048667
申请日：2005-02-01
IPC分类号： C07C263/10 , C07C263/20 , C07C265/14 , C08G18/02 , C08G18/08 , C08G18/76
CPC分类号： C07C263/10 , C07C263/20 , C08G18/7664 , C07C265/14
摘要： The invention relates to a process for the production of di- and polyisocyanates of the diphenylmethane series and mixtures thereof, in which aniline and formaldehyde are reacted in the presence of an acid catalyst to form di- and polyamines of the diphenylmethane series; the di- and polyamines of the diphenylmethane series are phosgenated, optionally in the presence of a solvent, to obtain a crude di- and polyisocyanate; from the crude di- and polyisocyanate, at least one fraction containing at least 5 wt. % 3-ring and multi-ring MDI and at least one fraction containing at least 95 wt. % 2-ring MDI are separated by distillation, and the acidities of the fraction containing at least 5 wt. % 3-ring MDI and multi-ring MDI, and/or the fraction containing at least 95 wt. % 2-ring MDI are determined analytically; and an acidic compound is added to the fraction containing at least 5 wt. % 3-ring MDI and multi-ring MDI, and/or the fraction containing at least 95 wt. % 2-ring MDI, so that the desired acidity is achieved.
摘要翻译： 本发明涉及二苯基甲烷系列的二异氰酸酯和多异氰酸酯的制造方法及其混合物，其中苯胺和甲醛在酸催化剂的存在下反应形成二苯基甲烷系列的二胺和多胺; 任选在溶剂存在下，将二苯基甲烷系列的二胺和多胺光气化，得到粗二异氰酸酯和多异氰酸酯; 从粗二异氰酸酯和多异氰酸酯，至少含有至少5wt。 ％3环和多环MDI和至少一个含有至少95wt。 通过蒸馏分离％2环MDI，并且所述馏分的酸度至少为5重量％ ％3环MDI和多环MDI，和/或含有至少95重量％ ％2环MDI是分析确定的; 并将酸性化合物加入到含有至少5wt。 ％3环MDI和多环MDI，和/或含有至少95重量％ ％2环MDI，从而达到所需的酸度。
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2.发明授权Production of di- and polyisocyanates of the diphenylmethane series with defined acidity 有权生产具有确定酸度的二苯基甲烷系列的二异氰酸酯和多异氰酸酯公开(公告)号：US07205430B2
公开(公告)日：2007-04-17
申请号：US11048667
申请日：2005-02-01
IPC分类号： C07C263/00 , C07C249/00
CPC分类号： C07C263/10 , C07C263/20 , C08G18/7664 , C07C265/14
摘要： The invention relates to a process for the production of di- and polyisocyanates of the diphenylmethane series and mixtures thereof, in which aniline and formaldehyde are reacted in the presence of an acid catalyst to form di- and polyamines of the diphenylmethane series; the di- and polyamines of the diphenylmethane series are phosgenated, optionally in the presence of a solvent, to obtain a crude di- and polyisocyanate; from the crude di- and polyisocyanate, at least one fraction containing at least 5 wt. % 3-ring and multi-ring MDI and at least one fraction containing at least 95 wt. % 2-ring MDI are separated by distillation, and the acidities of the fraction containing at least 5 wt. % 3-ring MDI and multi-ring MDI, and/or the fraction containing at least 95 wt. % 2-ring MDI are determined analytically; and an acidic compound is added to the fraction containing at least 5 wt. % 3-ring MDI and multi-ring MDI, and/or the fraction containing at least 95 wt. % 2-ring MDI, so that the desired acidity is achieved.
摘要翻译： 本发明涉及二苯基甲烷系列的二异氰酸酯和多异氰酸酯的制造方法及其混合物，其中苯胺和甲醛在酸催化剂的存在下反应形成二苯基甲烷系列的二胺和多胺; 任选在溶剂存在下，将二苯基甲烷系列的二胺和多胺光气化，得到粗二异氰酸酯和多异氰酸酯; 从粗二异氰酸酯和多异氰酸酯，至少含有至少5wt。 ％3环和多环MDI和至少一个含有至少95wt。 ％2环MDI通过蒸馏分离，并且含有至少5wt。 ％3环MDI和多环MDI，和/或含有至少95重量％ ％2环MDI是分析确定的; 并将酸性化合物加入到含有至少5wt。 ％3环MDI和多环MDI，和/或含有至少95重量％ ％2环MDI，从而达到所需的酸度。
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3.发明授权Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4′-methylenediphenyl diisocyanate and 2,4′-methylenediphenyl diisocyanate 有权从二苯基甲烷系列与高含量的4,4'-亚甲基二苯基二异氰酸酯和2,4'-亚甲基二苯基二异氰酸酯制备二异氰酸酯和多异氰酸酯的混合物公开(公告)号：US07038002B2
公开(公告)日：2006-05-02
申请号：US10896129
申请日：2004-07-21
申请人： Hans-Georg Pirkl , Ulrich Liman , Robert Vieler , Ralf Echterhoff
发明人： Hans-Georg Pirkl , Ulrich Liman , Robert Vieler , Ralf Echterhoff
CPC分类号： C07C263/10 , C07C263/20 , C07C265/14
摘要： A fraction of diisocyanates of the diphenylmethane series containing at least 95 wt. % binuclear methylenediphenyl diisocyanate is obtained by a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce diamines and polyamines of the diphenylmethane series containing binuclear methylenediphenyl diamine, b) phosgenating the diamines and polyamines produced in a), optionally in the presence of a solvent, to produce a crude diisocyanate and polyisocyanate, and c) separating a fraction containing at least 95 wt. % binuclear methylenediphenyl diisocyanate with a 4,4′-MDI content of over 60 wt. %, a 2,4′-MDI content of 4 to 35 wt. % and a 2,2′-MDI content of 0.01 to 10 wt. %, relative to the mass of the fraction, and a maximum of 20 ppm phenyl isocyanate and optionally a maximum of 50 ppm solvent from the crude diisocyanate and polyisocyanate produced in b) in a single distillation step with optional upstream and/or downstream separation of low-boiling components.
摘要翻译： 二苯基甲烷系列的二异氰酸酯的一部分含有至少95wt。 通过以下方法获得％双核亚甲基二苯基二异氰酸酯：a）在酸催化剂存在下使苯胺和甲醛反应，生成含有双核亚甲基二苯基二胺的二苯基甲烷系列的二胺和多胺，b）使a）中产生的二胺和多胺光气化， 的溶剂，以产生粗二异氰酸酯和多异氰酸酯，和c）分离含有至少95重量％ 具有超过60重量％的4,4'-MDI含量的双核亚甲基二苯基二异氰酸酯。 ％，2,4'-MDI含量为4〜35wt。 ％和2,2'-MDI含量为0.01〜10wt。 相对于馏分的质量，最大值为20ppm的苯基异氰酸酯和任选的最大值为50ppm的溶剂，来自粗制二异氰酸酯和b）中产生的多异氰酸酯，在单一蒸馏步骤中具有任选的上游和/或下游分离 低沸点组分。
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4.发明申请Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4'-methylenediphenyl diisocyanate and 2,4'-methylenediphenyl diisocyanate 有权从二苯基甲烷系列与高含量的4,4'-亚甲基二苯基二异氰酸酯和2,4'-亚甲基二苯基二异氰酸酯制备二异氰酸酯和多异氰酸酯的混合物公开(公告)号：US20050020797A1
公开(公告)日：2005-01-27
申请号：US10896129
申请日：2004-07-21
申请人： Hans-Georg Pirkl , Ulrich Liman , Robert Vieler , Ralf Echterhoff
发明人： Hans-Georg Pirkl , Ulrich Liman , Robert Vieler , Ralf Echterhoff
IPC分类号： C07C263/10 , C07C263/20 , C07C265/14 , C08G18/76 , C08G18/00
CPC分类号： C07C263/10 , C07C263/20 , C07C265/14
摘要： A fraction of diisocyanates of the diphenylmethane series containing at least 95 wt. % binuclear methylenediphenyl diisocyanate is obtained by a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce diamines and polyamines of the diphenylmethane series containing binuclear methylenediphenyl diamine, b) phosgenating the diamines and polyamines produced in a), optionally in the presence of a solvent, to produce a crude diisocyanate and polyisocyanate, and c) separating a fraction containing at least 95 wt. % binuclear methylenediphenyl diisocyanate with a 4,4′-MDI content of over 60 wt. %, a 2,4′-MDI content of 4 to 35 wt. % and a 2,2′-MDI content of 0.01 to 10 wt. %, relative to the mass of the fraction, and a maximum of 20 ppm phenyl isocyanate and optionally a maximum of 50 ppm solvent from the crude diisocyanate and polyisocyanate produced in b) in a single distillation step with optional upstream and/or downstream separation of low-boiling components.
摘要翻译： 二苯基甲烷系列的二异氰酸酯的一部分含有至少95wt。 通过以下方法获得％双核亚甲基二苯基二异氰酸酯：a）在酸催化剂存在下使苯胺和甲醛反应，生成含有双核亚甲基二苯基二胺的二苯基甲烷系列的二胺和多胺，b）使a）中产生的二胺和多胺光气化， 的溶剂，以产生粗二异氰酸酯和多异氰酸酯，和c）分离含有至少95重量％ 具有超过60重量％的4,4'-MDI含量的双核亚甲基二苯基二异氰酸酯。 ％，2,4'-MDI含量为4〜35wt。 ％和2,2'-MDI含量为0.01〜10wt。 相对于馏分的质量，最大值为20ppm的苯基异氰酸酯和任选的最大值为50ppm的溶剂，来自粗制二异氰酸酯和b）中产生的多异氰酸酯，在单一蒸馏步骤中具有任选的上游和/或下游分离 低沸点组分。
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公开(公告)号：US20080275269A1
公开(公告)日：2008-11-06
申请号：US11448444
申请日：2006-06-07
IPC分类号： C07C263/16
CPC分类号： C07C263/20 , C07C263/10 , C07C265/14
摘要： 4,4′-diphenylmethane diisocyanate is produced at two different sites by a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce a mixture of diamines and polyamines of the diphenylmethane series at a first production site, b) these diamines and polyamines are then reacted with phosgene to give the corresponding diisocyanates and polyisocyanates of the diphenylmethane series, which may optionally be separated by distillation to give a mixture of diisocyanates and polyisocyanates containing from 50 to 80 wt. % of 4,4′-diphenylmethane diisocyanate, from 1 to 12 wt. % of 2,4′- and/or 2,2′-diphenylmethane diisocyanate taken together, and from 10 to 45 wt. % of trifunctional and higher-functional polyisocyanates, based on the weight of the mixture of diisocyanates and polyisocyanates, c) transferring the mixture of diisocyanates and polyisocyanates to transport containers and transporting these isocyanate-containing containers to a second production site remote from the first, and d) separating the mixture of diisocyanates and polyisocyanates by distillation and/or crystallization to give a pure 4,4′-diphenylmethane diisocyanate containing at least 97 wt. % of 4,4′-diphenylmethane diisocyanate and a maximum of 3 wt. % of 2,4′-diphenylmethane diisocyanate.
摘要翻译： 在两个不同的位置通过以下方法产生4,4'-二苯基甲烷二异氰酸酯：a）在酸催化剂存在下使苯胺和甲醛反应，以在第一个生产部位产生二苯基甲烷系列的二胺和多胺的混合物，b）这些二胺和 然后将多胺与光气反应，得到二苯基甲烷系列的相应二异氰酸酯和多异氰酸酯，其可以任选地通过蒸馏分离，得到二异氰酸酯和含有50-80重量份的多异氰酸酯的混合物。 ％的4,4'-二苯基甲烷二异氰酸酯，1至12wt。 2,4'-和/或2,2'-二苯基甲烷二异氰酸酯的百分比在一起，和10-45wt。 基于二异氰酸酯和多异氰酸酯的混合物的重量，三官能和更高官能度的多异氰酸酯的百分比，c）将二异氰酸酯和多异氰酸酯的混合物转移到运输容器并将这些含异氰酸酯的容器运输到远离第一， 和d）通过蒸馏和/或结晶分离二异氰酸酯和多异氰酸酯的混合物，得到纯的4,4'-二苯基甲烷二异氰酸酯，其含有至少97wt。 ％的4,4'-二苯基甲烷二异氰酸酯和最多3wt。 ％的2,4'-二苯基甲烷二异氰酸酯。
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