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    • 7. 发明授权
    • Quinone diimmonium salts and their use to cure epoxies
    • 喹诺酮二铵盐及其用于治疗环氧树脂的用途
    • US5686639A
    • 1997-11-11
    • US425430
    • 1995-04-20
    • Murray S. Cohen
    • Murray S. Cohen
    • C07C251/30C09B53/00C07F9/66C07C205/00C07C207/00
    • C09B53/00C07C251/30
    • The invention relates to divalent immonium salts which are near infrared dyes of the formula (I). (R.sub.2 NAr).sub.2 --N.sup.+ .dbd.Ar'.dbd.N.sup.+ R.sub.2 +2X.sup.-(I) wherein: R.dbd.C.sub.1 to C.sub.6 alkyl; Ar=divalent phenyl which may or may not be ring substituted with one or more alkyl, alkoxy, halogen, nitro, cyano or carboalkoxy groups; Ar'=quinoidal phenyl which may or may not be ring substituted with one or more alkyl, alkoxy, halogen, nitro, cyano or carboalkoxy groups; and X=an anion of a strong acid. A double charged dye cation having an SbF.sub.6 anion associated with the dye can act both a near IR dye and an epoxy curative.
    • 本发明涉及作为式(I)的近红外染料的二价亚硝酸盐。 (R2NAr)2-N + = Ar'= N + R2 + 2X-(I)其中:R = C1-C6烷基; Ar =可以被一个或多个烷基,烷氧基,卤素,硝基,氰基或烷氧基取代的二价苯基; Ar'=喹啉基苯基,其可以或不被一个或多个烷基,烷氧基,卤素,硝基,氰基或烷氧基取代的环。 X =强酸的阴离子。 具有与染料相关的SbF 6阴离子的双电荷染料阳离子可以作用于近红外染料和环氧固化剂。
    • 10. 发明授权
    • Process for preparing bis-methylene spiroorthocarbonate
    • 双亚甲基螺二碳酸酯的制备方法
    • US4891436A
    • 1990-01-02
    • US273577
    • 1988-11-21
    • Murray S. CohenMorris Dunkel
    • Murray S. CohenMorris Dunkel
    • C07D493/10
    • C07D493/10
    • A process for the manufacture of bis-methylene spiro-orthocarbonate (BMSOC) wherein methyallyl chloride is subjected to the action of chlorine gas to form a mixture of 1,1-dichloromethyl ethylene and other chlorinated hydrocarbons which need not be and are not separated. The mixture is merely treated wich an alkali metal acetate such as sodium acetate to yield an easily separable second mixture by fractional distillation. The desired 1,1-diacetoxymethyl ethylene is thus recovered in high yield. It is then converted by transesterification in over 90% yield to the bismethylene spiroorthocarbonate (BMSOC). BMSOC is useful as a component for coatings composites, adhesive formulations and the like, which have the unique ability to (a) cure by free radical initiation and (b) expand during cure. BMSOC may be used as a component for dental composites, i.e. filling materials, because it reduces the possibility of leakage at the margin, i.e. at the composite-enamel interface and as a component in bone cements. It is also useful for the reduction of voids in electrical insulating coatings because it reduces the likelihood of corona and/or dielectric breakdown.
    • 制备双亚甲基螺 - 原碳酸酯(BMSOC)的方法,其中甲基氯化物经受氯气的作用以形成不需要和不分离的1,1-二氯甲基乙烯和其它氯代烃的混合物。 混合物仅用碱金属乙酸盐如乙酸钠处理,通过分馏得到容易分离的第二混合物。 因此以高收率回收所需的1,1-二乙酰氧基甲基乙烯。 然后通过酯交换反应以超过90%的产率转化为双亚甲基螺(甲基)碳酸氢盐(BMSOC)。 BMSOC可用作涂料复合材料,粘合剂配方等的组分,其具有(a)通过自由基引发固化和(b)固化期间膨胀的独特能力。 BMSOC可以用作牙科复合材料的组分,即填充材料,因为它减少了在边缘处的渗漏的可能性,即在复合搪瓷界面处和作为骨水泥中的组分。 它也可用于减少电绝缘涂层中的空隙,因为它降低了电晕和/或电介质击穿的可能性。