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    Process for the production of synthetic plastics comprising urethane groups and biuret groups
    1.
    发明授权
    Process for the production of synthetic plastics comprising urethane groups and biuret groups 失效
    用于生产包含氨基甲酸酯基和缩二脲基的合成塑料的方法

    公开(公告)号：US3899454A

    公开(公告)日：1975-08-12

    申请号：US36088373

    申请日：1973-05-16

    Applicant: BAYER AG

    Inventor： WAGNER KUNO ,  DIETRICH WERNER ,  KRAFT KARL-JOSEF ,  CONRAD HORST

    IPC: C08G18/72 ,  C08G18/78 ,  C08G18/79 ,  C08G18/14

    CPC classification number: C08G18/725 ,  C08G18/7831

    Abstract: A process is provided for the production of synthetic polyurethane plastics, particularly foam plastics, containing biuret groups by reacting polyisocyanates, polyhydroxyl and/or polycarboxyl compounds, flame inhibitors and, if desired, blowing agents, emulsifiers, activators and other additives which is characterized by using as the polyisocyanate solutions in monomeric polyisocyanates of from about 1 per cent to 85 per cent of polyisocyanates containing biuret groups and having the formula:

    in which R is an aromatic, araliphatic or cycloaliphatic radical which may, if desired, be substituted and N IS AN INTEGER FROM 0 TO 5, WHEREIN THE PROPORTION OF BIURETPOLYISOCYANATES HAVING MORE THAN THREE ISOCYANATE GROUPS IS AT LEAST 20 PER CENT BY WEIGHT BASED ON THE TOTAL QUANTITY OF BIURET-POLYISOCYANATES, AND THE SOLUTIONS CONTAIN FROM ABOUT 0.03 PER CENT TO ABOUT 5 PER CENT BY WEIGHT OF CHEMICALLY COMBINED EMULSIFIERS.

    Abstract translation: 提供了一种通过使多异氰酸酯，多羟基和/或多羧基化合物，阻燃剂以及如果需要的话发泡剂，乳化剂，活化剂和其它添加剂反应生成含有缩二脲基团的合成聚氨酯塑料，特别是泡沫塑料的方法。 在单体多异氰酸酯中使用约1％至85％的含有缩二脲基团的多异氰酸酯并具有下式的多异氰酸酯溶液：O PARALLEL OCN-RNCNR-NCO || O = C（CO-N-nH || H - N-CO）n-NR-NCO || R-NCOR | NCO，其中R是芳族，芳脂族或脂环族基团，如果需要，其可以被取代，并且N是整数，从0到5，在比例 具有超过三个异氰酸酯基团的多元醇 - 聚异氰酸酯基于基于多元醇 - 聚异氰酸酯的总量的重量至少为20个百分点，以及从化学合金重量的约0.03个百分点至约5个百分点的解决方案 INED EMULSIFIERS。

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