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51 条记录 (耗时 0.038 秒)

    Process for the preparation of complexes of one mol of dimerized or low-oligodimerized 4,4'-diisocyanatodiphenylmethane and two to three mol of 4,4'-diisocyanatodiphenylmethane, corresponding complexes, and their use for polyurethane production
    15.
    发明授权
    Process for the preparation of complexes of one mol of dimerized or low-oligodimerized 4,4'-diisocyanatodiphenylmethane and two to three mol of 4,4'-diisocyanatodiphenylmethane, corresponding complexes, and their use for polyurethane production 失效
    制备一摩尔二聚或低二聚体4,4'-二异氰酸二苯基甲烷和2至3摩尔4,4'-二异氰酸二苯基甲烷，相应络合物及其用于聚氨酯生产的配合物的方法

    公开(公告)号：US4720545A

    公开(公告)日：1988-01-19

    申请号：US829056

    申请日：1986-02-13

    申请人： Gerhard Grogler ,  Richard Kopp ,  Heinrich Hess

    发明人： Gerhard Grogler ,  Richard Kopp ,  Heinrich Hess

    IPC分类号： C08G18/00 ,  C07D229/00 ,  C08G18/72 ,  C08G18/76 ,  C08G18/79 ,  C07D403/14

    CPC分类号： C07D229/00 ,  C08G18/798

    摘要： The present invention relates to a process for the dimerization of 4,4'-diisocyanatodiphenylmethane from emulsion in apolar solvents with the formation of complexes and to the complexes obtainable for the first time by this process. The complexes consist of one mol of low molecular weight 4,4'-diisocyanato-diphenylmethane-uretdione or its low oligomers corresponding to the idealized formula (I) ##STR1## (n=0 to 0.5, where n is the average degree of oligomerization of the dimer) and 2 to 3 mol of 4,4'-diisocyanatodiphenylmethane (MDI) ##STR2## In the process according to the invention, 4,4'-diisocyanatodiphenylmethane (II) in the molten form is emulsified in apolar solvents. Dimerization is started in the presence of conventional dimerization catalysts at temperatures above the melting point of MDI, preferably up to an upper temperature limit of 50.degree. to 60.degree. C. The temperature is then lowered to

    摘要翻译： 本发明涉及一种在非极性溶剂中形成络合物的乳液中的4,4'-二异氰酸二苯基甲烷二聚作用的方法以及通过该方法首次获得的络合物。 络合物由1mol低分子量的4,4'-二异氰酸酯基 - 二苯基甲烷脲二酮或其对应于理想化的式（I）的低聚物组成。（I）（n = 0至0.5，其中n 是二聚体的平均低聚度）和2〜3mol的4,4'-二异氰酸根合二苯基甲烷（MDI）。（II）在本发明的方法中，4,4'-二异氰酸根合二苯基甲烷 熔融形式在非极性溶剂中乳化。 在常规二聚催化剂存在下，在高于MDI熔点的温度下，优选开始二聚，最好达到50-60℃的上限温度。然后将温度降至<40℃。如果需要，二聚可以 当异氰酸酯含量达到22.4％至26.9％时停止。 然后将产物在低温下，优选0℃至25℃下处理。所得的络合物作为新物质被要求。 还要求使用该复合物生产聚氨酯。

    Process for the production of solid polyisocyanates of retarded reactivity, polymer-coated, finely divided polyisocyanates and their use
    16.
    发明授权
    Process for the production of solid polyisocyanates of retarded reactivity, polymer-coated, finely divided polyisocyanates and their use 失效

    公开(公告)号：US4667008A

    公开(公告)日：1987-05-19

    申请号：US732039

    申请日：1985-05-08

    申请人： Gerhard Grogler ,  Richard Kopp ,  Heinrich Hess

    发明人： Gerhard Grogler ,  Richard Kopp ,  Heinrich Hess

    IPC分类号： C08G18/00 ,  C08G18/70 ,  C08G18/72 ,  C08L75/04 ,  C09D175/00 ,  C09D175/04 ,  C14C11/00 ,  D06N3/14 ,  C08G18/32 ,  C08G18/48

    CPC分类号： C08G18/8019 ,  C07C263/18 ,  C08G18/3206 ,  C08G18/3234 ,  C08G18/4825 ,  C08G18/5024 ,  C08G18/703 ,  C08G18/725 ,  C08G18/755 ,  C08G18/7621 ,  C08G18/7831 ,  C08G18/8038 ,  Y10T428/2991

    摘要： This invention relates to the production of polymer-coated, finely divided polyisocyanates by mixing(A) solid, finely divided polyisocyanates (preferably dimeric diisocyanates or urea diisocyanates) with(B) polyisocyanates differing in composition from those mentioned under (A) (preferably (cyclo) aliphatic polyisocyanates, such as biuretized diisocyanates or trimers or NCO-prepolymers),in quantities of from 0.05 to 50 parts by weight, and preferably in quantities of from 0.2 to 25 parts by weight, of (B) per 100 parts by weight of (A). The solid polyisocyanate particles surface-modified by covering with polyisocyanates (B) and then reacted with(D) isocyanate-reactive compounds containing reactive hydrogen atoms or with compounds free from active hydrogen atoms which form polymers with isocyanates in sub-equivalent to substantially equivalent quantities (preferably 0.5 to 1.0 equivalent per NCO-equivalent), in the presence of(C) inert, weakly polar organic solvents, (for example aliphatic hydrocarbons or relatively long chain dialkyl ethers), plasticizers, polyols or aromatic polyamines.A polymer coating is formed by the reaction of (B) and (D) around the solid polyisocyanate cores (A).The present invention also relates to the polyisocyanate particles covered with polyisocyanates (B) on the surface of the solid polyisocyanates (A) and, in particular, to the foreign-polymer coated, finely particulate polyisocyanates of retarded reactivity obtained by reaction with (D).The present invention also relates to the use of the polyisocyanate-covered and, more particularly, polymer-coated polyisocyanates, optionally in suspension in polyols and/or plasticizers, for the production of polyurethanes, more particularly in one-component polyurethane reactive systems having a long shelf life and a high thickening point.

    Process for the production of polyurea-elastomers and corresponding elastomers having an idealized segment structure
    17.
    发明授权
    Process for the production of polyurea-elastomers and corresponding elastomers having an idealized segment structure 失效
    制备具有理想化段段结构的聚脲弹性体和相应的弹性体的方法

    公开(公告)号：US4569982A

    公开(公告)日：1986-02-11

    申请号：US694572

    申请日：1985-01-24

    申请人： Gerhard Grogler ,  Heinrich Hess ,  Richard Kopp ,  Werner Rasshofer

    发明人： Gerhard Grogler ,  Heinrich Hess ,  Richard Kopp ,  Werner Rasshofer

    IPC分类号： C08G18/00 ,  C08G18/10 ,  C08G18/46 ,  C08G18/50 ,  C08G18/64 ,  C08G18/65 ,  C08G18/70 ,  C08G18/72 ,  C08G18/79 ,  C08G18/32

    CPC分类号： C08G18/707 ,  C08G18/10 ,  C08G18/4615 ,  C08G18/4623 ,  C08G18/5024 ,  C08G18/5027 ,  C08G18/5048 ,  C08G18/6529

    摘要： According to the present invention, relatively high molecular weight aliphatic and/or aromatic polyamines having molecular weights of from 400 to 8,000 (preferably from 600 to 4,000) are mixed with substantially equivalent quantities of low molecular weight, solid, finely-divided diisocyanates having a melting point of >40.degree. C., (preferably >80.degree. C.), such as phenylene diisocyanate, naphth lene-1,5-diisocyanate, dimeric toluylene-2,4-diisocyanate or the urea diisocyanate of toluylene-2,4-diisocyanate. This mixture, having a pot life of at least several minutes, is subsequently heated to a relatively high temperature, such as from 80.degree. to 200.degree. C.The products obtained have excellent elastic properties over a broad temperature range. They have an exceptionally flat modulus of elasticity curve (G') in the torsional vibration test. The hard and soft segments are markedly segregated and are thus not substantially disturbed by reciprocal interaction causing "softening".

    摘要翻译： 根据本发明，分子量为400至8,000（优选600至4,000）的相对高分子量的脂族和/或芳族多胺与基本上等量的低分子量固体，细分二异氰酸酯混合，其具有 熔点> 40℃（优选> 80℃），如亚苯基二异氰酸酯，萘-1,5-二异氰酸酯，二聚甲苯-2,4-二异氰酸酯或甲苯-2,4 二异氰酸酯。 随后将具有至少几分钟的适用期的混合物加热到相对较高的温度，例如80℃至200℃。所得产物在宽的温度范围内具有优异的弹性。 在扭转振动试验中，它们具有非常平坦的弹性模量曲线（G'）。 硬段和软段显着分离，因此基本上不会受到引起“软化”的相互作用的相互干扰。

    Process for the production of stabilized polyisocyanates of retarded reactivity and their use in the production of polyurethanes
    18.
    发明授权
    Process for the production of stabilized polyisocyanates of retarded reactivity and their use in the production of polyurethanes 失效
    用于生产延迟反应性稳定的多异氰酸酯及其在生产聚氨酯中的用途的方法

    公开(公告)号：US4546165A

    公开(公告)日：1985-10-08

    申请号：US694566

    申请日：1985-01-24

    申请人： Gerhard Grogler ,  Heinrich Hess ,  Richard Kopp

    发明人： Gerhard Grogler ,  Heinrich Hess ,  Richard Kopp

    IPC分类号： C08G18/00 ,  C07C265/00 ,  C08G18/08 ,  C08G18/70 ,  C08G18/72 ,  C08G18/80 ,  C08G18/18

    CPC分类号： C08G18/6648 ,  C08G18/089 ,  C08G18/10 ,  C08G18/5045 ,  C08G18/6685 ,  C08G18/705 ,  C08G18/7825 ,  C08G18/798 ,  C08G18/80

    摘要： The present invention relates to a process for the production of solid polyisocyanates of retarded reactivity stabilized by surface modification by reacting solid, finely divided polyisocyanates, and particularly dimeric tolylene diisocyanate, dimeric diphenylmethane diisocyanate and 3,3'-diisocyanato-4,4'-dimethyl-N,N'-diphenyl urea, with acyclic, mono- or bicyclic compounds having an amidine or guanidine structure and which do not contain any hydrogen atoms reactive to isocyanates at room temperature in a quantity of from 0.1 to 25 equivalent percent of "amidine" or "guanidine" per isocyanate equivalent. The reaction may be carried out directly in a liquid medium selected from the group consisting of active hydrogen compounds, plasticizers, water, and solvents to form a suspension of polyadduct-coated, stabilized polyisocyanates in the liquid medium.

    摘要翻译： 本发明涉及通过使固体，细分散的多异氰酸酯，特别是二聚甲苯二异氰酸酯，二聚二苯基甲烷二异氰酸酯和3,3'-二异氰酸根合-4,4'-二异氰酸酯二异氰酸酯反应，通过表面改性而稳定的延迟反应性固体聚异氰酸酯的制备方法， 二甲基-N，N'-二苯基脲，其具有脒或胍结构的无环，单或双环化合物，并且在室温下不含任何与异氰酸酯反应的氢原子，其量为0.1至25当量的“ 脒“或”胍“。 反应可以直接在选自活性氢化合物，增塑剂，水和溶剂的液体介质中进行，以在液体介质中形成多加成膜包被的稳定化多异氰酸酯的悬浮液。

    Process for the production of cold-setting polyurethane urea elastomers
    20.
    发明授权
    Process for the production of cold-setting polyurethane urea elastomers 失效
    生产冷凝聚氨酯脲弹性体的方法

    公开(公告)号：US4882411A

    公开(公告)日：1989-11-21

    申请号：US245877

    申请日：1988-09-16

    申请人： Gerhard Grogler ,  Andreas Ruckes ,  Heinrich Hess ,  Richard Kopp

    发明人： Gerhard Grogler ,  Andreas Ruckes ,  Heinrich Hess ,  Richard Kopp

    IPC分类号： C08G18/66 ,  C08G18/10 ,  C08G18/48 ,  C08G18/65

    CPC分类号： C08G18/4837 ,  C08G18/10

    摘要： The present invention relates to a process for the production of polyurethane urea elastomers from(a) NCO-terminated prepolymers based on polyisocyanates and polyethers having a molecular weight of 400 to about 10,000 and an ethylene oxide content of about 10 to 60 mole-% and(b) solid diaminodiphenyl ureas corresponding to the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and represent hydrogen or C.sub.1 -C.sub.6 alkyl radicals and wherein the amino groups are in the m-and/or p-position to the urea group,characterized in that the NCO prepolymers are reacted with the diaminodiphenyl ureas in powder-form in a heterogeneous phase at temperatures of about 5.degree. to 40.degree. C.The present invention is also directed to the polyurethane urea elastomers prepared by this process.

    摘要翻译： 本发明涉及从（a）基于聚异氰酸酯和聚醚的分子量为400至约10,000并且环氧乙烷含量为约10至60摩尔％的NCO封端的预聚物制备聚氨酯脲弹性体的方法，以及 （b）对应于式“IMAGE”的固体二氨基二苯脲，其中R 1，R 2，R 3和R 4可以相同或不同，表示氢或C 1 -C 6烷基，并且其中氨基在m-和/或p 位置，其特征在于NCO预聚物与二氨基二苯基脲在非常相中以粉末形式在约5℃至40℃的温度下反应。本发明还涉及制备的聚氨酯脲弹性体 通过这个过程。