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    • 1. 发明专利
    • Separating method of 4,4'-dihydroxydiphenyl sulfone from isomeric mixture of dihydroxydiphenyl sulfone
    • 4,4'-二羟基二苯基硫醚从二羟基二苯甲酮异构体混合物中分离的方法
    • JPS5777667A
    • 1982-05-15
    • JP15222880
    • 1980-10-31
    • Tokai Denka Kogyo Kk
    • OOURA OSAMISHIMIZU YASUMASAKITAMURA KOUJI
    • C07C67/00C07C313/00C07C315/06C07C317/22
    • C07C315/06C07C317/22
    • PURPOSE: To separate 4,4'-dihydroxydiphenyl sulfone useful as a raw material for a synthetic resin in high purity by an easy operation, by treating an isomeric mixture of dihydroxydiphenyl sulfones inexpensive phenol.
      CONSTITUTION: An isomeric mixture of 4,4'-dihydroxydiphenyl sulfone with 2,4'- dihydroxydiphenyl sulfone is wholly dissolved in phenol, and the resultant solution is then cooled to crystallize only the 4,4'-dihydroxydiphenyl sulfone as its adduct with the phenol, which is then separated by the filtration, etc. The resultant adduct directly or in an aqueous solution is heat-treated to give the aimed 4,4'-dihydroxydiphenyl sulfone of high purity easily. The phenol used for the separation is directly usable as a reaction raw material for the dihydroxydiphenyl sulfone.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:通过简单的操作分离出高纯度合成树脂原料的4,4'-二羟基二苯砜,通过处理二羟基二苯砜的异构体混合物便宜的苯酚。 构成:将4,4'-二羟基二苯基砜与2,4'-二羟基二苯基砜的异构体混合物全部溶解在苯酚中,然后将所得溶液冷却,仅结晶出4,4'-二羟基二苯砜与其加合物 苯酚,然后通过过滤分离等。所得加合物直接或在水溶液中进行热处理,得到高纯度的目标4,4'-二羟基二苯基砜。 用于分离的苯酚可直接用作二羟基二苯砜的反应原料。
    • 2. 发明专利
    • Purifying method of dihydroxydiphenyl sulfone
    • 二羟基二苯醚的净化方法
    • JPS5777666A
    • 1982-05-15
    • JP15222780
    • 1980-10-31
    • Tokai Denka Kogyo Kk
    • OOURA OSAMISHIMIZU YASUMASAFUKAZAWA TSUNEOKITAMURA KOUJI
    • C07C315/06C07C67/00C07C313/00C07C315/00C07C317/22
    • PURPOSE: To obtain the titled dihydroxydiphenyl sulfone (bisphenol-S) useful as a raw material for a synthetic resin in high purity, by treating 4,4'-dihydroxydiphenyl sulfone containing a colored substance with an inorganic peroxide.
      CONSTITUTION: 4,4'-Dihydroxydiphenyl sulfone (bisphenol-S) containing a colored substance is dissolved in an alkaline aqueous solution, and an inorganic peroxide is then added to decolor the solution. Formed crystals are then separated to give the bisphenol-S having a high degree of whiteness. Hydrogen peroxide, sodium perborate, etc. may be cited as the inorganic peroxide, and the amount thereof is 0.1W 5wt% based on the weight of the bisphenol-S. The use of a sequestering agent, e.g. EDTA, in addition to the inorganic peroxide further improves the decoloring effect.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:通过用无机过氧化物处理含有着色物质的4,4'-二羟基二苯砜,得到高纯度合成树脂原料的二羟基二苯砜(双酚S)。 构成:将含有着色物质的4,4'-二羟基二苯砜(双酚S)溶解在碱性水溶液中,然后加入无机过氧化物使溶液脱色。 然后分离形成的晶体,得到白度高的双酚-S。 可以列举过氧化氢,过硼酸钠等作为无机过氧化物,其量相对于双酚S的重量为0.1〜5重量%。 使用螯合剂,例如, EDTA除了无机过氧化物外,还能进一步提高脱色效果。
    • 3. 发明专利
    • Preparation of dihydroxydiphenyl sulfone
    • 二羟基二苯醚的制备
    • JPS5777664A
    • 1982-05-15
    • JP15222580
    • 1980-10-31
    • Tokai Denka Kogyo Kk
    • OOURA OSAMISHIMIZU YASUMASAKITAMURA KOUJI
    • C07B61/00B01J21/00B01J21/16B01J27/00B01J27/20C07C67/00C07C313/00C07C315/00C07C317/22
    • Y02P20/52
    • PURPOSE: To obtain the titled compound useful as a raw material intermediate for a crosslinking agent, dye, etc. and a substitute for bisphenol A, etc. in a short time, by reacting phenol with a sulfonating agent or phenolsulfonic acid in the presence of active carbon, etc. as a catalyst.
      CONSTITUTION: Phenol is condensed with a sulfonating agent, e.g. concentrated sulfuric acid, fuming sulfuric acid or sulfuric acid anhydride, or phenolsulfonic acid in the presence of at least one selected from the group consisting of active carbon and activated clay at 140W250°C through the dehydration of give the aimed substance. The molar ratio between the phenol and the sulfonating agent or the phenolsulfonic acid is preferably as follow: Phenol/sulfonating agent =2W6 or phenol/phenolsulfonic acid =1W3. The amount of the catalyst to be added is perferably 0.01W 1.0wt% based on the reactants.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:为了获得用作交联剂,染料等的原料中间体的标题化合物,并在短时间内代替双酚A等,通过苯酚与磺化剂或苯酚磺酸的反应,在 活性炭等作为催化剂。 构成:苯酚与磺化剂缩合,例如 浓硫酸,发烟硫酸或硫酸酐,或苯酚磺酸,在140-250摄氏度的活性炭和活性白土中,在选自活性炭和活性白土中的至少一种的存在下,通过脱水得到目标物质。 苯酚与磺化剂或苯酚磺酸的摩尔比优选如下:苯酚/磺化剂= 2-6或苯酚/苯酚磺酸= 1-3。 催化剂的添加量相对于反应物优选为0.01- 1.0重量%。
    • 4. 发明专利
    • Purifying method of dihydroxydiphenyl sulfone
    • 二羟基二苯醚的净化方法
    • JPS5777665A
    • 1982-05-15
    • JP15222680
    • 1980-10-31
    • Tokai Denka Kogyo Kk
    • OOURA OSAMISHIMIZU YASUMASAFUKAZAWA TSUNEOKITAMURA KOUJI
    • C07C303/42C07C67/00C07C313/00C07C315/00C07C315/06C07C317/22
    • C07C315/06C07C317/22
    • PURPOSE: To obtain the titled pure compound having a high transparency, by dissolving dihydroxydiphenyl sulfone (bisphenol-S) containing a colored substance in a solvent, decoloring the dihydroxydiphenyl sulfone with a reducing agent, and using preferably a sequestering agent.
      CONSTITUTION: Dihydroxydiphenyl sulfone (hereinafter abbreviated to bisphenol- S) containing an impurity, particularly a colored substance, is dissolved in a solvent, e.g. methyl alcohol, formic acid or acetone, and the resultant solution is then decolored with a reducing agent, e.g. sodium dithionite or thiourea dioxide. In the process, a sequestering agent, e.g. nitrilotriacetic acid or ethylenediaminetetraacetic acid, is preferably used, and formed crystals are separated under ordinary pressure to give the aimed substance. The amount of the reducing agent is 0.1W5wt% based on the weight of the bisphenol-S, and the amount of the sequestering agent is 0.01W 1.0wt% based on the weight of the bisphenol-S.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:为了获得具有高透明度的标题纯化合物,通过将含有着色物质的二羟基二苯基砜(双酚-S)溶解在溶剂中,用还原剂脱色二羟基二苯基砜,并优选使用螯合剂。 含有杂质的二羟基二苯砜(以下缩写为双酚S),特别是有色物质溶解于溶剂中。 甲醇,甲酸或丙酮,然后将所得溶液用还原剂,例如甲醇, 连二亚硫酸钠或二氧化硫脲。 在此过程中,可以使用螯合剂。 次氮基三乙酸或乙二胺四乙酸,并在常压下分离形成的晶体,得到目标物质。 还原剂的量相对于双酚-S的重量为0.1-5重量%,螯合剂的量为双酚-S重量的0.01〜1.0重量%。
    • 5. 发明专利
    • Isolation of 4,4'-dihydroxydiphenylsulfone from mixture of dihyoroxydiphenylsulfone isomer
    • 从二羟基二苯基甲硅烷酮异构体混合物中分离4,4'-二羟基二苯基甲硅烷
    • JPS5735560A
    • 1982-02-26
    • JP11039480
    • 1980-08-13
    • Tokai Denka Kogyo Kk
    • OOURA OSAMISHIMIZU YASUMASAFUKAZAWA TSUNEOKITAMURA KOUJI
    • C07C317/22C07C67/00C07C313/00C07C315/06
    • PURPOSE: To obtain a compound useful as a substitute for bisphenol A in high purity and in high yield, by using a mixed solvent of an alcohol and o-dichlorobenzene in a specific ratio from a mixture of dihydroxydiphenylsulfone isomers.
      CONSTITUTION: 4,4'-Dihydroxydiphenylsulfone is isolated from a mixture of isomers of 4,4'-dihydroxydiphenylsulfone and 2,4'-dihydroxydiphenylsulfone. The mixture of the isomers is treated with a mixed solvent comprising 1W10wt% one or more alcohols selected from the group consisting of methanol, ethanol, n-propanol, and iso-propanol and 99W90wt% o-dichlorobenzene so that the isomers are separated. The separation is carried out by using a relatively inexpensive and industrially sufficiently usable solvent, and the operation in separation and purification is simple. The separation is done at room temperature so that it is industrially advantageous.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:通过从二羟基二苯砜异构体的混合物中以特定比例使用醇和邻二氯苯的混合溶剂,以高纯度和高收率获得可用作双酚A的替代物的化合物。 构成:从4,4'-二羟基二苯砜和2,4'-二羟基二苯砜的异构体混合物中分离出4,4'-二羟基二苯砜。 异构体的混合物用包含1-10wt%一种或多种选自甲醇,乙醇,正丙醇和异丙醇和99-90wt%邻二氯苯的醇的混合溶剂处理,使得异构体 被分开 通过使用相对便宜且工业上充分可用的溶剂进行分离,分离纯化操作简单。 分离在室温下进行,这在工业上是有利的。