Cyclic pyrophosphate derivatives and their preparation
    1.
    发明授权
    Cyclic pyrophosphate derivatives and their preparation 失效
    环磷酸衍生物及其制备

    公开(公告)号:US4404150A

    公开(公告)日:1983-09-13

    申请号:US231914

    申请日:1981-02-05

    摘要: A cyclic pyrophosphate derivative having the formula ##STR1## wherein A represents a direct bond between the two phenyl rings or a divalent moiety selected from the group consisting of lower alkylene, aryl substituted lower alkylene, cycloalkylidene, sulfonyl and oxy;R.sup.1 represents alkyl, acryloyloxy lower alkyl or methacryloyloxy lower alkyl in which the lower alkyl can be substituted with halogen; andR.sup.2 represents independently hydrogen, halogen, lower alkyl or lower alkoxy;a method of preparing the same, a dental filling material comprising the same and a method of filling dental cavities are disclosed.

    摘要翻译: 具有下式的环状焦磷酸酯衍生物,其中A表示两个苯环之间的直接键或选自低级亚烷基,芳基取代的低级亚烷基,亚环烷基,磺酰基和氧基的二价基团; R1表示低级烷基可被卤素取代的烷基,丙烯酰氧基低级烷基或甲基丙烯酰氧基低级烷基; 并且R 2独立地表示氢,卤素,低级烷基或低级烷氧基; 公开了其制备方法,包含该牙科填充材料的牙科填充材料和填充牙腔的方法。

    Hardening resin compositions
    3.
    发明授权
    Hardening resin compositions 失效
    硬化树脂组合物

    公开(公告)号:US4339558A

    公开(公告)日:1982-07-13

    申请号:US270027

    申请日:1981-06-03

    IPC分类号: C08G59/22 C08G59/72 C08L63/00

    CPC分类号: C08G59/226 C08G59/72

    摘要: Double fluid hardening resion compositions are hereby offered which contain a hardening resin base composed of bisphenol A epoxy resion and paraoxybenzoic glycydylester-ether epoxy resin and a hardening agent constituted by a complex of a polybasic carboxylic ester derived from an alcohol having a cyclic ether linkage in its molecule and boron trifluoride. These compositions are capable of very quick setting of resin and their hardened form possesses excellent physical properties, so that they are useful for urgent repairs of pipings, tanks, etc.

    摘要翻译: 因此提供了含有由双酚A环氧树脂和对羟基苯甲酸缩水甘油醚 - 环氧树脂组成的硬化树脂基质和由衍生自具有环醚键的醇的多元羧酸酯的络合物构成的硬化剂的双流体硬化絮凝组合物 其分子和三氟化硼。 这些组合物能够非常快速地固化树脂,并且其硬化形式具有优异的物理性能,因此它们可用于紧急维修管道,罐等。