公开(公告)号：US4810820A

公开(公告)日：1989-03-07

申请号：US84546

申请日：1987-08-12

申请人： William E. Slack ,  Terry A. Potter ,  Kenneth L. Dunlap

发明人： William E. Slack ,  Terry A. Potter ,  Kenneth L. Dunlap

IPC分类号： C08G18/73 ,  C07C67/00 ,  C07C241/00 ,  C07C263/16 ,  C07C265/00 ,  C07C265/04 ,  C07C273/18 ,  C07C275/60 ,  C08G18/78 ,  C09D175/00 ,  C07C127/22

CPC分类号： C07C265/10 ,  C07C265/00 ,  C07C273/1809 ,  C08G18/7837

摘要： Aliphatic and/or cycloaliphatic polyisocyanates containing allophanate groups are produced by reacting (a) a di- and/or polyisocyanate with aliphatic and/or cycloaliphatic isocyanate groups with (b) a hydroxy compound at a temperature of at least 150.degree. C. for no more than 90 minutes and then rapidly cooling the reaction mixture to a temperature of less than 100.degree. C. It is preferred that the reaction be carried out in the absence of oxygen. The products thus obtained are virtually colorless, have a relatively low viscosity and excellent storage stability.

公开(公告)号：US5349082A

公开(公告)日：1994-09-20

申请号：US33935

申请日：1993-03-19

申请人： William E. Slack ,  Kenneth L. Dunlap ,  Larry W. Arndt ,  Louis Renbaum

发明人： William E. Slack ,  Kenneth L. Dunlap ,  Larry W. Arndt ,  Louis Renbaum

IPC分类号： C07C263/20

CPC分类号： C07C263/20

摘要： Disclosed herein is a process for recovering toluene diisocyanate (TDI) from a TDI residue solution, comprising mixing the residue solution with a polyisocyanate consisting essentially of methylenediphenyl diisocyanate (MDI) or MDI in combination with its higher ring oligomer, followed by heating the resulting mixture over a temperature range of 130.degree. to 250.degree. C. for a period of time sufficient to remove free TDI and thermally splittable TDI generated from equilibration of the TDI residue with MDI or the MDI oligomer by either a batch or continuous process.

摘要翻译： 本文公开了一种从TDI残余物溶液中回收甲苯二异氰酸酯（TDI）的方法，包括将残余物溶液与基本上由亚甲基二苯基二异氰酸酯（MDI）或MDI组合的多异氰酸酯与其较高级的低聚物组合，然后加热得到的混合物 在130-250℃的温度范围内，足以除去通过MDI或MDI低聚物通过间歇或连续方法平衡TDI残余物产生的游离TDI和热裂解TDI的时间。

公开(公告)号：US4259526A

公开(公告)日：1981-03-31

申请号：US13765

申请日：1979-02-21

申请人： Kenneth L. Dunlap ,  Hartmut Knofel

发明人： Kenneth L. Dunlap ,  Hartmut Knofel

IPC分类号： C07B61/00 ,  B01J27/00 ,  B01J27/10 ,  C07C67/00 ,  C07C209/00 ,  C07C209/54 ,  C07C209/60 ,  C07C211/50 ,  C08G8/16 ,  C08G12/08 ,  C07C85/145

CPC分类号： C07C209/60 ,  C07C211/50

摘要： The instant invention is directed to a process for the preparation of mixtures of polyamines of the polyamino-polyaryl-polymethylene type whereby the proportion or the ortho-substituted products are substantially increased. This increase is brought about by adding the acid catalyst to the aromatic amine/formaldehyde reaction mixture in two or more stages.

摘要翻译： 本发明涉及制备聚氨基 - 聚芳基 - 聚亚甲基类型的多胺的混合物的方法，由此比例或邻位取代的产物显着增加。 这种增加是通过在两个或更多个阶段中将芳族胺/甲醛反应混合物加入酸催化剂而产生的。

公开(公告)号：US5175350A

公开(公告)日：1992-12-29

申请号：US836639

申请日：1992-02-14

申请人： Stephen D. Seneker ,  Kenneth L. Dunlap ,  Michael K. Lowery ,  Terry A. Potter

发明人： Stephen D. Seneker ,  Kenneth L. Dunlap ,  Michael K. Lowery ,  Terry A. Potter

IPC分类号： C07C263/20 ,  C08G18/75

CPC分类号： C08G18/758 ,  C07C263/20 ,  C07C2101/14

摘要： The present invention is directed for preparing a 4,4'-diisocyanato dicyclohexylmethane which contain a relatively high amount of the trans,trans-isomer. The process broadly comprises (a) melting a mixture of 4,4'-diisocyanato dicyclohexyl-methane isomers, (b) cooling the melted mixture to form: (1) a liquid phase and (2) a solid phase, (c) removing said liquid phase, which is a commercially viable product itself, (d) heating the solid phase and removing that portion of the solid phase which has melted, and (e) recovering that portion of said solid phase which has not melted by heating the remaining portion.

摘要翻译： 本发明涉及制备含有相对高量的反式异构体的4,4'-二异氰酸酯基二环己基甲烷。 该方法广泛地包括（a）熔化4,4'-二异氰酸根合二环己基甲烷异构体的混合物，（b）冷却熔融的混合物以形成：（1）液相和（2）固相，（c） 所述液相本身是商业上可行的产品，（d）加热固相并除去已熔化的固相的那部分，和（e）通过加热余下的部分回收未融化的所述固相部分 一部分。

公开(公告)号：US4983763A

公开(公告)日：1991-01-08

申请号：US511155

申请日：1990-04-19

申请人： Stephen D. Seneker ,  Terry A. Potter ,  Kenneth L. Dunlap

发明人： Stephen D. Seneker ,  Terry A. Potter ,  Kenneth L. Dunlap

IPC分类号： C07C263/20 ,  C07C265/14 ,  C08G18/75

CPC分类号： C08G18/758 ,  C07C263/20

摘要： The present invention is directed to a simple process for preparing a 4,4'-diisocyanato dicyclohexylmethane containing at least 90% by weight of the trans, trans-isomer. More particularly, the process comprises:(a) melting a mixture of 4,4'-diisocyanato dicyclohexylmethane isomers containing at least 30% by weight, and preferably from 45 to 55% by weight, of the trans,trans-isomer,(b) cooling the melted mixture to a temperature of from about 20.degree. to about 25.degree. C. to form;(1) a liquid phase which contains from about 18 to about 25% by weight of the trans,trans-isomer, and(2) a solid phase which contains from about 70 to about 85% by weight of the trans,trans-isomer,(c) removing said liquid phase,(d) dissolving said solid phase in a solvent to form a 4,4'-diisocyanato dicyclohexylmethane-containing solution,(e) allowing said solution to remain at room temperature for a time sufficient to form:(1) a solid phase containing at least 90% by weight, and preferably at least 98% by weight of the trans,trans-isomer, and(2) a liquid phase containing said solvent and a mixture of 4,4'-diisocyanato dicyclohexylmethane isomers containing from 30 to 70% by weight, and preferably from 45 to 55% by weight of the trans,trans-isomer, and(f) removing said solid phase (e)(1).

公开(公告)号：US4888442A

公开(公告)日：1989-12-19

申请号：US910579

申请日：1986-09-23

申请人： Kenneth L. Dunlap ,  Peter H. Markusch ,  Clarence D. Ferrell

发明人： Kenneth L. Dunlap ,  Peter H. Markusch ,  Clarence D. Ferrell

IPC分类号： B01D1/22 ,  C08G18/10 ,  C08G18/78 ,  C08G18/79 ,  C08G18/80

CPC分类号： C08G18/8003 ,  B01D1/222 ,  C08G18/10 ,  C08G18/7831 ,  C08G18/791

摘要： The present invention is directed to a process for reducing the free monomer content of polyisocyanate adduct mixtures wherein the adduct has an average isocyanate functionality of greater than about 1.8 which comprises treating the polyisocyanate adduct mixture in the presence of 2 to about 30 percent by weight of an inert solvent, based on the weight of the polyisocyanate mixture, in an agitated thin-layer evaporator under conditions sufficient to reduce the free monomer content of the polyisocyanate adduct mixture below that level which is obtainable in the absence of a solvent.

摘要翻译： 本发明涉及一种降低多异氰酸酯加合物混合物的游离单体含量的方法，其中加合物的平均异氰酸酯官能度大于约1.8，该方法包括在2-30重量％的聚异氰酸酯加合物混合物存在下， 惰性溶剂，基于多异氰酸酯混合物的重量，在搅拌的薄层蒸发器中，条件足以将多异氰酸酯加合物混合物的游离单体含量降低到不存在溶剂时可获得的多异氰酸酯加合物混合物。