公开(公告)号：US4408061A

公开(公告)日：1983-10-04

申请号：US357353

申请日：1982-03-11

申请人： Herbert Salzburg ,  Holger Meyborg ,  Heinz Ziemann

发明人： Herbert Salzburg ,  Holger Meyborg ,  Heinz Ziemann

IPC分类号： C07D493/04

CPC分类号： C07D493/04

摘要： A process for the preparation of 1,4-3,6-dianhydro-hexitols from hexitols by elimination of water is described, characterized in that gaseous hydrogen halide is used as the acid dehydrating agent optionally with carboxylic acids, carboxylic acid halides and/or carboxylic acid anhydrides in quantities of up to 600 mol percent, based on the hexitols, as cocatalysts. The reaction is carried out in the absence of water and organic solvents, preferably using gaseous hydrogen chloride, temperatures of up to 300.degree. C. and pressures of up to 250 bar. Very high yields are obtained after working up of the product by distillation or extraction.

摘要翻译： 描述了通过除去水从己醇制备1,4-3,6-二脱氢 - 己醇的方法，其特征在于，使用气态卤化氢作为酸脱水剂，任选地与羧酸，羧酸卤化物和/或 羧酸酐，其量为至多600摩尔％，基于己二醇，作为助催化剂。 反应在没有水和有机溶剂的情况下进行，优选使用气态氯化氢，温度高达300℃，压力高达250巴。 通过蒸馏或萃取处理产物后可获得非常高的产率。

公开(公告)号：US4189542A

公开(公告)日：1980-02-19

申请号：US930303

申请日：1978-08-02

申请人： Helmut Kleimann ,  Holger Meyborg ,  Hans-Jurgen Lienert ,  Gerhard Grogler

发明人： Helmut Kleimann ,  Holger Meyborg ,  Hans-Jurgen Lienert ,  Gerhard Grogler

IPC分类号： C08J9/02 ,  C08G18/10 ,  C08G18/75 ,  C08G18/80 ,  C08G18/14

CPC分类号： C08G18/8058 ,  C08G18/10 ,  C08G18/75 ,  C08G18/8032

摘要： The instant invention is directed to a process for the production of weather-resistant rigid molded foams based on polyurethanes having a dimensional stability under heat according to DIN 53 432 of at least 70.degree. C. and a compact surface, a cellular core and an integral density distribution throughout the cross-section of the moldings, comprising foaming a foamable reaction mixture of polyisocyanates, polyhydroxyl compounds, blowing agents and, optionally, other isocyanate-reactive compounds, activators and other auxiliaries in a closed mold under the conditions of in-mold foaming, the improvement wherein the polyisocyanates used are reaction products containing isocyanate groups and urethane groups, said reaction products formed by reacting diisocyanates containing at least one cycloaliphatically bound isocyanate group and no more than one aliphatically bound isocyanate group with sub-stoichiometric quantities of organic polyhydroxyl compounds.

摘要翻译： 本发明涉及一种用于生产基于聚氨酯的耐候刚性模塑泡沫的方法，所述聚氨酯在根据DIN 53 432的加热条件下具有至少70℃的尺寸稳定性，以及紧凑的表面，多孔芯和积分 包括在模制品的整个横截面处的密度分布，包括在模内的条件下，在封闭模具中发泡多异氰酸酯，多羟基化合物，发泡剂和任选的其它异氰酸酯反应性化合物，活化剂和其它助剂的可发泡反应混合物 发泡，其中使用的多异氰酸酯是含有异氰酸酯基团和氨基甲酸酯基团的反应产物的改进，所述反应产物是通过使含有至少一个环脂族连接的异氰酸酯基团的二异氰酸酯和不超过一个脂族结合的异氰酸酯基团与亚化学计量的有机多羟基 化合物。

公开(公告)号：US4564645A

公开(公告)日：1986-01-14

申请号：US689357

申请日：1985-01-07

申请人： Herbert Salzburg ,  Manfred Hajek ,  Holger Meyborg

发明人： Herbert Salzburg ,  Manfred Hajek ,  Holger Meyborg

IPC分类号： C07D493/04 ,  C08G18/32 ,  C08G18/30

CPC分类号： C07D493/04 ,  C08G18/3218

摘要： Liquid dianhydrohexitol mixtures are prepared from diacylation products of hexitols and compounds such as organic carboxylic acids, carboxylic acid anhydrides, carboxylic acid halides, ketene and carbonic acid ester derivatives. More specifically, such diacylation products are simultaneously dehydrated and isomerized by subjecting them to a temperature of at least 130.degree. C. in the presence of a strong acid to yield diacylated dianhydro-hexitol isomer mixtures. These isomer mixtures are then converted to dianhydro-hexitol isomer mixtures by hydrolysis or transesterification. Suitable strong acids include proton acids, Lewis acids and heterogeneous acid catalysts (e.g., ion exchange resins). The mixtures of the present invention are characterized by a minimal tendency towards crystallization. These mixtures are particularly useful as chain extending agents in the production of polyurethanes.

摘要翻译： 液体二脱水己糖醇混合物由己醇的二酰化产物和有机羧酸，羧酸酐，羧酸卤化物，乙烯酮和碳酸酯衍生物等化合物制备。 更具体地说，这样的二酰化产物通过在强酸存在下使其至少130℃的温度同时进行脱水和异构化，得到二酰化二脱氢 - 己糖醇异构体混合物。 然后通过水解或酯交换将这些异构体混合物转化为二脱氢己糖醇异构体混合物。 合适的强酸包括质子酸，路易斯酸和多相酸催化剂（如离子交换树脂）。 本发明的混合物的特征在于最小的结晶倾向。 这些混合物特别可用作聚氨酯生产中的扩链剂。

公开(公告)号：US4506086A

公开(公告)日：1985-03-19

申请号：US515411

申请日：1983-07-20

申请人： Herbert Salzburg ,  Manfred Hajek ,  Holger Meyborg

发明人： Herbert Salzburg ,  Manfred Hajek ,  Holger Meyborg

IPC分类号： C07D493/04 ,  C08G18/32

CPC分类号： C07D493/04 ,  C08G18/3218

摘要： Liquid dianhydrohexitol mixtures are prepared from diacylation products of hexitols and compounds such as organic carboxylic acids, carboxylic acid anhydrides, carboxylic acid halides, ketene and carbonic acid ester derivatives. More specifically, such diacylation products are simultaneously dehydrated and isomerized by subjecting them to a temperature of at least 130.degree. C. in the presence of a strong acid to yield diacylated dianhydrohexitol isomer mixtures. These isomer mixtures are then converted to dianhydrohexitol isomer mixtures by hydrolysis or transesterification. Suitable strong acids include proton acids, Lewis acids and heterogeneous acid catalysts (e.g., ion exchange resins). The mixtures of the present invention are characterized by a minimal tendency towards crystallization. These mixtures are particularly useful as chain extending agents in the production of polyurethanes.

摘要翻译： 液体二脱水己糖醇混合物由己醇的二酰化产物和有机羧酸，羧酸酐，羧酸卤化物，乙烯酮和碳酸酯衍生物等化合物制备。 更具体地说，这样的二酰化产物通过在强酸存在下经受至少130℃的温度同时进行脱水和异构化，得到二酰基二脱水己糖异构体混合物。 然后通过水解或酯交换将这些异构体混合物转化成二羟基己糖异构体混合物。 合适的强酸包括质子酸，路易斯酸和多相酸催化剂（如离子交换树脂）。 本发明的混合物的特征在于最小的结晶倾向。 这些混合物特别可用作聚氨酯生产中的扩链剂。

公开(公告)号：US4383051A

公开(公告)日：1983-05-10

申请号：US357118

申请日：1982-03-11

申请人： Holger Meyborg ,  Kuno Wagner ,  James M. Barnes ,  Herbert Salzburg

发明人： Holger Meyborg ,  Kuno Wagner ,  James M. Barnes ,  Herbert Salzburg

IPC分类号： C08L65/00 ,  C08G18/00 ,  C08G18/10 ,  C08G18/32 ,  C08G18/65 ,  C08L7/00 ,  C08L21/00 ,  C08L67/00 ,  C08L77/00 ,  C08G18/14

CPC分类号： C08G18/6511 ,  C08G18/10 ,  C08G18/3218

摘要： A process for the preparation of homogeneous and cellular polyurethane plastics by the reaction of(a) organic polyisocyanates;(b) compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having molecular weights of from 400 to 10,000;(c) chain extenders, and, optionally, additional(d) short-chained compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having a molar mass of from 32 to 400, as well as, optionally,(e) catalysts, blowing agents and other known additives,is described, which is characterized in that 1,4-3,6-dianhydro-hexites, preferably 1,4-3,6-dianhydro-D-sorbitol and/or 1,4-3,6-dianhydro-D-mannitol, optionally mixed with lower molecular weight compounds, preferably with polyols having a molecular weight of from 62 to 400, particularly preferably butane diol-1,4 are used as the chain extenders. The new chain extenders produce high quality elastomers and foams.

摘要翻译： 通过（a）有机多异氰酸酯的反应制备均匀和细胞聚氨酯塑料的方法; （b）含有至少2个Zerewitinoff-活性氢原子并且分子量为400至10,000的化合物; （c）扩链剂，以及任选地，含有至少2个Zerewitinoff-活性氢原子并且具有32-400摩尔质量的另外的（d）短链化合物，以及任选的（e）催化剂，吹制 其特征在于1,4-3,6-二脱水 - 己酸，优选1,4-3,6-二脱氢-D-山梨糖醇和/或1,4-3,6 - 二水-D-甘露糖醇，任选地与较低分子量的化合物混合，优选使用分子量为62至400的多元醇，特别优选丁二醇-1,4作为扩链剂。 新的增链剂生产高品质的弹性体和泡沫。

公开(公告)号：US4305991A

公开(公告)日：1981-12-15

申请号：US135817

申请日：1980-03-31

申请人： Holger Meyborg ,  Werner Mormann ,  Hans-Walter Illger ,  Manfred Bock

发明人： Holger Meyborg ,  Werner Mormann ,  Hans-Walter Illger ,  Manfred Bock

IPC分类号： C08G18/32 ,  C08G18/38 ,  C08G18/66 ,  C08G18/14 ,  B32B5/14 ,  C08G18/16 ,  C08G18/30

CPC分类号： C08G18/3271 ,  C08G18/3831 ,  C08G18/6688 ,  Y10S264/14 ,  Y10T428/249989 ,  Y10T428/31554

摘要： The instant invention relates to a process for the production of polyurethane foams by reacting polyisocyanates with polyhydroxyl compounds of a specified molecular weight range in the presence of blowing agents and chain lengthening or cross-linking agents and optionally in the presence of catalysts, foam stabilizers and other additives generally known. The improvement resides in(a) the polyisocyanates used containing aliphatically and/or cycloaliphatically bound isocyanate groups;(b) the polyhydroxyl compounds used containing ether groups; and(c) the chain lengthening or cross-linking agents comprising at least in part a member selected from the group consisting of a monoalkoxylated hydrazine, a dialkoxylated hydrazine, a reaction product of a monoalkoxylated or dialkoxylated hydrazine with an aliphatic monoisocyanate in a molar ratio of 1:1. The reaction is carried out in the presence of additional chain lengthening agents having a specified molecular weight. The present invention also relates to polyurethane foams obtained by this process.

摘要翻译： 本发明涉及通过使多异氰酸酯与特定分子量范围的多羟基化合物在发泡剂和链延长或交联剂的存在下以及任选地在催化剂，泡沫稳定剂和 其他通常已知的添加剂。 改进在于（a）含有脂族和/或环状结合的异氰酸酯基团的多异氰酸酯; （b）含有醚基的多羟基化合物; 链长度或交联剂至少包括选自单烷氧基化肼，二烷氧基化肼，单烷氧基化或二烷氧基化肼与脂族单异氰酸酯的反应产物的摩尔比 为1：1。 该反应在具有特定分子量的另外的链延长剂的存在下进行。 本发明还涉及通过该方法获得的聚氨酯泡沫。

公开(公告)号：US4298701A

公开(公告)日：1981-11-03

申请号：US139921

申请日：1980-04-14

申请人： Holger Meyborg ,  Christian Weber

发明人： Holger Meyborg ,  Christian Weber

IPC分类号： C08G18/00 ,  B29B7/00 ,  B29C39/00 ,  B29C39/02 ,  B29C39/26 ,  B29C39/38 ,  B29C39/42 ,  C08G18/32 ,  C08G18/48 ,  C08G18/65 ,  C08G18/66 ,  C08J9/02 ,  C08G18/14

CPC分类号： C08G18/4837 ,  C08G18/3237 ,  C08G18/4845 ,  C08G18/6685 ,  C08G2101/0033 ,  C08G2120/00 ,  Y10S264/14 ,  Y10S264/83 ,  Y10S521/914 ,  Y10T428/249989

摘要： This invention relates to an improved single-stage process for the production of elastic shaped articles having an impervious surface layer by the reaction injection molding technique in which highly reactive systems of polyisocyanates, relatively high molecular weight polyhydroxyl compounds and aromatic polyamines are used.

摘要翻译： 本发明涉及通过反应注射成型技术生产具有不透水表面层的弹性成形制品的改进的单阶段方法，其中使用多异氰酸酯，相对高分子量的多羟基化合物和芳族多胺的高反应性体系。