Urea-containing (meth) acrylic acid derivatives of triisocyanates
    4.
    发明授权
    Urea-containing (meth) acrylic acid derivatives of triisocyanates 失效
    三异氰酸酯的含尿素(甲基)丙烯酸衍生物

    公开(公告)号:US5008436A

    公开(公告)日:1991-04-16

    申请号:US517261

    申请日:1990-05-01

    摘要: For filling and forming teeth, novel (meth)acrylic acid derivatives of triisocyanates of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and stand for hydrogen or a lower alkyl radical,R.sup.3, R.sup.4 and R.sup.5 are identical or different and denote hydrogen or methyl,Y.sup.1 to Y.sup.3 are identical or different and denote divalent straight-chain or branched hydrocarbon radicals of 2 to 15 carbon atoms which may optionally include 1 to 3 oxygen bridges and which may be unsubstituted or substituted by 1 to 4 additional (meth)acryloyloxy radicals,X.sup.1 to X.sup.3 are identical or different and denote --NR.sup.1 -- or --O--, at least one of the radicals X.sup.1 to X.sup.3 denoting --NR.sup.1 --, and the ringsA and B are identical or different and may be aromatic or saturated.

    摘要翻译: 为了填充和形成牙齿,具有式(I)+ TR图像的三异氰酸酯的新的(甲基)丙烯酸衍生物,其中R 1和R 2相同或不同,代表氢或低级烷基,R 3,R 4 和R5相同或不同,表示氢或甲基,Y1至Y3相同或不同,表示2至15个碳原子的二价直链或支链烃基,其可任选包括1至3个氧桥,并且其可以是未取代的或 被1〜4个(甲基)丙烯酰氧基取代,X1〜X3相同或不同,表示-NR1-或-O-,表示-NR1-的基团X1〜X3中的至少一个,环A和B分别为 相同或不同,可以是芳族或饱和的。