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    Process of producing high purity bis(4-hydroxyphenyl)sulfides and heat-sensitive recording materials containing the same
    43.
    发明授权
    Process of producing high purity bis(4-hydroxyphenyl)sulfides and heat-sensitive recording materials containing the same 失效
    制备高纯度双（4-羟基苯基）硫化物和含有它们的热敏记录材料的方法

    公开(公告)号：US5175372A

    公开(公告)日：1992-12-29

    申请号：US683554

    申请日：1991-04-10

    申请人： Akira Onoe ,  Masao Kawamura ,  Kunioki Kato ,  Tomiharu Amitani ,  Makoto Sato ,  Tsuyoshi Morishita

    发明人： Akira Onoe ,  Masao Kawamura ,  Kunioki Kato ,  Tomiharu Amitani ,  Makoto Sato ,  Tsuyoshi Morishita

    IPC分类号： B41M5/333 ,  C07C319/14 ,  C07C323/20

    CPC分类号： B41M5/3336 ,  C07C319/14

    摘要： In a process of producing high purity bis(4-hydroxyphenyl)sulfides which comprises reacting phenols with sulfur dichloride in an organic solvent, the improvement comprising: reacting the phenols with sulfur dichloride in a nonpolar organic solvent; removing partly or wholly the nonpolar organic solvent after the reaction; adding a polar organic solvent to the reaction mixture to dissolve the reaction mixture therein at elevated temperatures; and crystallizing out the high purity bis(4-hydroxyphenyl)sulfides.There is further provided a high performance heat-sensitive recording material which comprises high purity bis(4-hydroxy-3-methylphenyl)sulfide thus prepared and having a melting point in the range of from 123.9.degree. C. to 124.9.degree. C. as a developer and a fluoran compound as a color former.

    摘要翻译： 在制备高纯度双（4-羟基苯基）硫化物的方法中，其包括在有机溶剂中使酚与二氯化硫反应，其改进包括：使苯酚与二氯化硫在非极性有机溶剂中反应; 反应后部分或全部去除非极性有机溶剂; 向反应混合物中加入极性有机溶剂以在升高的温度下溶解其中的反应混合物; 并结晶出高纯度的双（4-羟基苯基）硫化物。 进一步提供了一种高性能热敏记录材料，其包含如此制备的高纯度双（4-羟基-3-甲基苯基）硫化物，熔点范围为123.9℃至124.9℃，为 显影剂和作为成色剂的荧烷化合物。

    Perfluorovinyl compounds
    49.
    发明授权
    Perfluorovinyl compounds 失效
    全氟乙烯基化合物

    公开(公告)号：US5023380A

    公开(公告)日：1991-06-11

    申请号：US364665

    申请日：1989-06-09

    申请人： David A. Babb ,  Bobby R. Ezzell ,  Katherine S. Clement

    发明人： David A. Babb ,  Bobby R. Ezzell ,  Katherine S. Clement

    IPC分类号： C07C41/01 ,  C07C22/08 ,  C07C41/18 ,  C07C43/17 ,  C07C43/174 ,  C07C43/225 ,  C07C65/21 ,  C07C69/92 ,  C07C323/20 ,  C07C391/00 ,  C07C391/02 ,  C07F5/02 ,  C07F7/12 ,  C07F9/50 ,  C08F16/14 ,  C08F16/24 ,  C08F28/00 ,  C08F28/02 ,  C08F30/04

    CPC分类号： C07C43/17 ,  C07C22/08 ,  C07C43/225 ,  C07C65/21 ,  C07C69/92 ,  C07C2103/18

    摘要： Compounds have a structure represented by Formula I:CF.sub.2 =CF-X-R-(X-CF=CF.sub.2).sub.mwherein R represents an unsubstituted or inertly substituted hydrocarbyl group; each X is independently selected from the group consisting of groups having at least one non-carbon atom between R and --CF=CF.sub.2 ; and m is an integer of from 1 to about 3. Polymers formed from such compounds are also prepared. The compounds are preferably prepared by a method by a process comprising the steps of:(a) forming a salt having anion corresponding to a compound of Formula II:HX--R--(XH).sub.m ; wherein X, R and m are as defined for Formula I;(b) reacting the salt with a 1,2-dihalo-1,1,2, 2-tetrafluoroethane wherein the halo groups are iodine, bromine, chlorine or mixtures thereof, at least one halo group being bromine or iodine, to form a compound of Formula III:Z-CF.sub.2 CF.sub.2 -X-R-(X-CF.sub.2 CF.sub.2 - Z).sub.m wherein X, R and m are as defined for Formula I and each Z is independently iodine or bromine;(c) eliminating the halogen atoms represented by Z to form the perfluorovinyl compound represented by Formula I.

    摘要翻译： 化合物具有由式I表示的结构：CF 2 = CF-X-R-（X-CF = CF 2）m其中R表示未取代或惰性取代的烃基; 每个X独立地选自具有至少一个R和-CF = CF 2之间的非碳原子的基团; 并且m为1至约3的整数。还制备由这些化合物形成的聚合物。 化合物优选通过包括以下步骤的方法的方法制备：（a）形成具有对应于式II化合物的阴离子的盐：HX-R-（XH）m; 其中X，R和m如式I所定义; （b）使盐与1,2-二卤代-1,1,2,2-四氟乙烷反应，其中卤素是碘，溴，氯或其混合物，至少一个卤素基团是溴或碘，以形成 式III化合物：Z-CF 2 CF 2 -XR-（X-CF 2 CF 2 - Z）m其中X，R和m如式I所定义，各Z独立地为碘或溴; （c）除去由Z表示的卤素原子，形成由式I表示的全氟乙烯基化合物。