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    Process for the preparation of organic polyisocyanates
    95.
    发明申请
    Process for the preparation of organic polyisocyanates 审中-公开
    制备有机多异氰酸酯的方法

    公开(公告)号：US20030055282A1

    公开(公告)日：2003-03-20

    申请号：US10202584

    申请日：2002-07-24

    Applicant: Huntsman International LLC

    Inventor： Joris Karel Peter Bosman ,  Nicole Mangelschots

    IPC: C07C263/00

    CPC classification number: C07C263/04 ,  C07C265/14

    Abstract: Process for the preparation of organic polyisocyanates by decomposing the corresponding organic polycarbamates into organic polyisocyanates and alcohols, characterised in that the alcohol and at least part of either the diisocyanates or the monoisocyanatomonocarbamates, or both, formed upon decomposition of the said polycarbamates is removed during the decomposition.

    Abstract translation: 通过将相应的有机多氨基甲酸酯分解成有机多异氰酸酯和醇来制备有机多异氰酸酯的方法，其特征在于在所述聚氨酯的分解过程中除去醇和至少部分二异氰酸酯或单异氰酸根合氨基甲酸酯或两者， 分解。

    Polyisocyanates containing allophanate groups
    96.
    发明授权
    Polyisocyanates containing allophanate groups 失效
    含有脲基甲酸酯基的多异氰酸酯

    公开(公告)号：US5672736A

    公开(公告)日：1997-09-30

    申请号：US555200

    申请日：1995-11-08

    Applicant: Martin Brahm ,  Lutz Schmalstieg ,  Josef Pedain

    Inventor： Martin Brahm ,  Lutz Schmalstieg ,  Josef Pedain

    IPC: C07C273/18 ,  C07C275/60 ,  C08G18/78 ,  C09D175/00 ,  C07C263/00

    CPC classification number: C08G18/7837 ,  C07C275/60

    Abstract: The present invention relates to a process for preparing polyisocyanates containing allophanate groups by reacting compounds a), which i) contain urethane groups, but which are substantially free of hydroxyl groups and isocyanate groups, ii) have an average of at least two urethane groups per molecule, iii) are prepared by reacting organic isocyanates a1) with organic hydroxyl compounds a2) and iv) have an average molecular weight of at most 2,500, with excess quantities, based on the urethane groups, of distillable organic polyisocyanates b) to form polyisocyanates containing allophanate groups and subsequently removing by distillation the unreacted excess of component b) to a residual content of less than 0.5 wt. %, provided that polyisocyanates a1) and polyisocyanates b) are different. The present invention also relates to the products obtained from this process and to their use as binders or binder components in coating compositions.

    Abstract translation: 本发明涉及通过使具有氨基甲酸酯基但不含羟基和异氰酸酯基的化合物a）反应制备含有脲基甲酸酯基团的多异氰酸酯的方法，ii）基本上不含羟基和异氰酸酯基团，ii）平均具有至少两个氨基甲酸酯基团 分子，iii）通过使有机异氰酸酯a1）与有机羟基化合物a2）和iv）具有至多2500的平均分子量，基于氨基甲酸酯基团的过量的可蒸馏有机多异氰酸酯b）来制备，以形成多异氰酸酯 含有脲基甲酸酯基团，随后通过蒸馏将未反应的组分b）过量除去至少于0.5wt。 ％，条件是多异氰酸酯a1）和多异氰酸酯b）不同。 本发明还涉及从该方法获得的产品及其作为涂料组合物中的粘合剂或粘合剂组分的用途。

    Process for preparing isocyanic acid from cyanuric acid
    98.
    发明授权
    Process for preparing isocyanic acid from cyanuric acid 失效
    由氰尿酸制备异氰酸的方法

    公开(公告)号：US5466429A

    公开(公告)日：1995-11-14

    申请号：US302321

    申请日：1994-09-08

    Applicant: Johannes Lercher ,  Zhan Zhaoqui

    Inventor： Johannes Lercher ,  Zhan Zhaoqui

    IPC: C07C263/00 ,  C07C263/08 ,  C01C3/14

    CPC classification number: C01C3/145

    Abstract: Process for preparing isocyanic acid by bringing cyanuric acid into contact with an aluminum catalyst at temperatures of from 300.degree. to 600.degree. C. and isolating the isocyanic acid formed or directly using it for further reaction.

    Abstract translation: 通过使氰尿酸在300℃〜600℃的温度下与铝催化剂接触来制备异氰酸的方法，并分离所形成的异氰酸酯或直接使用其进一步反应。

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