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    Verfahren zur Herstellung von 4,4'-Dinitrodibenzylen.
    1.
    发明公开
    Verfahren zur Herstellung von 4,4'-Dinitrodibenzylen. 失效
    一种用于4,4'- Dinitrodibenzylen的制备方法。

    公开(公告)号：EP0206147A2

    公开(公告)日：1986-12-30

    申请号：EP86108035

    申请日：1986-06-12

    Applicant: BAYER AG

    Inventor： KOPP RICHARD DR ,  GROGLER GERHARD DR ,  KONIG KLAUS DR ,  SCHMIDT MANFRED DR

    IPC: C07C67/00 ,  C07C201/00 ,  C07C201/12 ,  C07C205/06 ,  C07C205/12 ,  C07C79/10 ,  C07C76/02 ,  C07C79/12

    CPC classification number: C07C201/12 ,  C07C205/06 ,  C07C205/12

    Abstract: 4,4'-Dinitrodibenzyle werden hergestellt, indem man 4-Nitrotoluole in Gegenwart eines organischen Lösungs- und/oder Verdünnungsmittels mit einem Alkali- und/oder Erdalkalialkoholat umsetzt und anschließend das Reaktionsgemisch mit einer wäßrigen Lösung von unterhalogenigen Säuren und/oder deren Salzen oder mit Chlor, Brom oder einer wäßrigen Lösung von Wasserstoffperoxid und/oder dessen Salzen oder mit organischen oder anorganischen Persäuren und/oder deren Salzen behandelt.

    Abstract translation: 4,4'- Dinitrodibenzyle由-4-硝基甲苯的有机溶剂和/或稀释剂的存在下与碱金属和/或碱土金属醇盐，然后将反应混合物用次卤酸和/或它们的盐或水溶液反应来制备 与氯，溴或过氧化物和/或氢及其盐或水溶液与有机或无机过酸和/或它们的盐进行处理。

    4.
    发明专利
    未知

    公开(公告)号：ES2054155T3

    公开(公告)日：1994-08-01

    申请号：ES90111621

    申请日：1990-06-20

    Applicant: BAYER AG

    Inventor： GROGLER GERHARD DR ,  RUCKES ANDREAS DR ,  KOPP RICHARD DR ,  HESS HEINRICH DR ,  EIBEN ROBERT DR ,  BARNES JAMES MICHAEL

    IPC: C07C275/62 ,  C07C273/18 ,  C08G18/30 ,  C08G18/70 ,  C08G18/76 ,  C08G18/78 ,  C08G18/80

    Abstract: The present invention relates to a process for the preparation of a modified 1,5-naphthylene diisocyanate containing urea and biuret groups comprising reacting (a) 1,5-naphthylene diisocyanate in molten form with (b) a mixture comprising about 0.02 to about 0.5 mole of water per mole of 1,5-naphthylene diisocyanate and about 1 to about 10 parts for each part of water of an organic solvent. The present invention further relates to a process for the preparation of elastomeric moldings comprising reacting by the one-shot or prepolymer process at an isocyanate index of 70 to 130 a modified 1,5-naphthylene diisocyanate containing urea and biuret groups with compounds containing at least two isocyanate-reactive groups and having a molecular weight in the range from about 500 to about 10,000 and, optionally, organic compounds containing isocyanate-reactive groups and having a molecular weight in the range from 60 to 499.

    POLYURETHANE FROM DIAMINODIPHENYL UREA
    5.
    发明专利
    POLYURETHANE FROM DIAMINODIPHENYL UREA 未知

    公开(公告)号：AU2230588A

    公开(公告)日：1989-04-06

    申请号：AU2230588

    申请日：1988-09-19

    Applicant: BAYER AG

    Inventor： GROGLER GERHARD DR ,  RUCKES ANDREAS DR ,  KOPP RICHARD DR

    IPC: C08G18/65 ,  C08G18/00 ,  C08G18/08 ,  C08G18/32 ,  C08G18/38 ,  C08G101/00 ,  C08J9/14 ,  C08G18/66 ,  C08G18/14

    Abstract: The present invention is directed to a process for the production of compact or cellular, elastomeric moldings having a compact skin based on polyurethane urea elastomers prepared from (a) organic polyisocyanates, (b) relatively high molecular weight polyhydroxyl or polyamino compounds containing at least two reactive hydrogen atoms, (c) diaminodiphenyl ureas as chain-extending agents and optionally, (d) catalysts, (e) small quantities of ethylene glycol, (f) other chain-extending agents and/or cross-linking agents, (g) blowing agents and (h) auxiliaries and/or additives, which is characterized in that the chain-extending agents (c) are diaminodiphenyl ureas corresponding to formula I (I) wherein R1, R2, R3 and R4 may be the same or different and represent hydrogen or a C1-C6 alkyl radical and wherein the NH2 groups are in the m- and/or p-position to the urea group. The present invention is also directed to the RIM elastomers produced by this process.

    PROCESS FOR THE PREPARATION OF SOLID POLYISOCYANATES HAVING A DELAYED REACTIVITY, DISPERSED POLYISOCYANATES ENVELOPED BY POLYMERS, AND THEIR USE
    6.
    发明专利
    PROCESS FOR THE PREPARATION OF SOLID POLYISOCYANATES HAVING A DELAYED REACTIVITY, DISPERSED POLYISOCYANATES ENVELOPED BY POLYMERS, AND THEIR USE 未知

    公开(公告)号：DE3565114D1

    公开(公告)日：1988-10-27

    申请号：DE3565114

    申请日：1985-05-09

    Applicant: BAYER AG

    Inventor： GROGLER GERHARD DR ,  KOPP RICHARD DR ,  HESS HEINRICH DR

    IPC: C08G18/00 ,  B01J13/02 ,  C08G18/70 ,  C08G18/72 ,  C08L75/04 ,  C09D175/00 ,  C09D175/04 ,  C14C11/00 ,  D06N3/14 ,  C07C118/00

    Abstract: 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 PREPARING POLYURETHANE ELASTOMERS
    8.
    发明专利
    PROCESS FOR PREPARING POLYURETHANE ELASTOMERS 未知

    公开(公告)号：DE3161090D1

    公开(公告)日：1983-11-10

    申请号：DE3161090

    申请日：1981-03-20

    Applicant: BAYER AG

    Inventor： KOPP RICHARD DR ,  MEYBORG HOLGER DR ,  GROGLER GERHARD DR ,  SCHWINDT JURGEN DR

    IPC: C08G18/00 ,  C08G18/10 ,  C08G18/32 ,  C08G18/38 ,  C08G18/65

    Abstract: Polyurethane urea elastomers are produced by reacting polyisocyanates with compounds containing at least two isocyanate reactive hydrogen atoms having a molecular weight of 400 to 10,000 and mononuclear or dinuclear aromatic diamines. The aromatic diamines must have at least one sulfonamide group as a substituent on at least one of their aromatic rings. Known chain lengthening agents, activators, blowing agents, auxiliary agents and additives may also be included in the reaction mixture. Polyurethane elastomers produced by this process have excellent mechanical properties. In particular, such elastomers are soft yet have high tear propagation resistance.

    PROCESS FOR THE PREPARATION OF FOAMED MATERIALS
    9.
    发明专利
    PROCESS FOR THE PREPARATION OF FOAMED MATERIALS 未知

    公开(公告)号：DE2862124D1

    公开(公告)日：1983-01-20

    申请号：DE2862124

    申请日：1978-08-07

    Applicant: BAYER AG

    Inventor： KLEIMANN HELMUT DR ,  MEYBORG HOLGER DR ,  LIENERT HANS-JURGEN DR ,  GROGLER GERHARD DR

    IPC: C08J9/02 ,  C08G18/10 ,  C08G18/20 ,  C08G18/24 ,  C08G18/75 ,  C08G18/80 ,  C08J9/34 ,  C08G18/14

    Abstract: 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 DEG 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.

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