Process for preparation of 4,4'-dihydroxydiphenylsulfone
    21.
    发明授权
    Process for preparation of 4,4'-dihydroxydiphenylsulfone 失效
    4,4'-二羟基二苯砜的制备方法

    公开(公告)号:US5241121A

    公开(公告)日:1993-08-31

    申请号:US904887

    申请日:1992-06-25

    CPC分类号: C07C315/00 C07C315/04

    摘要: A process for preparing 4,4'-dihydroxydiphenylsulfone, the process including heating 4,4'-dihydroxydiphenylsulfone and 2,4'-dihydroxydiphenylsulfone in the presence of an acid catalyst to isomerize the 2,4'-dihydroxydiphenylsulfone into 4,4'-dihydroxydiphenylsulfone, the process being characterized in that a suspension of 4,4'-dihydroxydiphenylsulfone and 2,4'-dihydroxydiphenylsulfone in a liquid dispersing medium is heated for isomerization while the liquid portion is distilled off or a crystal mixture of 4,4'-dihydroxydiphenylsulfone and 2,4'-dihydroxydiphenylsulfone is heated for isomerization to produce 4,4'-dihydroxydiphenylsulfone in the form of crystal powder.

    摘要翻译: 一种制备4,4'-二羟基二苯砜的方法,该方法包括在酸催化剂存在下加热4,4'-二羟基二苯砜和2,4'-二羟基二苯砜,使2,4'-二羟基二苯砜异构化成4,4'-二羟基二苯砜, 二氢二苯基砜,其特征在于将4,4'-二羟基二苯基砜和2,4'-二羟基二苯基砜在液体分散介质中的悬浮液加热异构化,同时蒸馏掉液体部分或4,4'-二羟基二苯基砜的结晶混合物, 二羟基二苯砜和2,4'-二羟基二苯砜加热异构化,生成结晶粉末形式的4,4'-二羟基二苯砜。

    Process for producing 4,4'-dihydroxydiphenylsulfone of high purity
    22.
    发明授权
    Process for producing 4,4'-dihydroxydiphenylsulfone of high purity 失效
    生产高纯度的4,4'-二羟基二苯基砜的方法

    公开(公告)号:US4162270A

    公开(公告)日:1979-07-24

    申请号:US896611

    申请日:1978-04-14

    CPC分类号: C07C315/00

    摘要: In a process for producing 4,4'-dihydroxydiphenylsulfone by reacting phenol with sulfuric acid in the presence of a solvent, an improvement which comprises using at least a member selected from the group consisting of chlorobenzene, dichlorobenzene, trichlorobenzene, chlorotoluene, diethylbenzene, xylene, decalin, tetralin and tetrachloroethane as the solvent and removing said solvent progressively and finally substantially completely from the mixture while maintaining the reaction mixture at a temperature of about 160.degree. to about 200.degree. C. to effect precipitation of 4,4'-dihydroxydiphenylsulfone and isomerization of 2,4'-dihydroxydiphenylsulfone to 4,4'-dihydroxydiphenylsulfone.

    摘要翻译: 在溶剂存在下,通过苯酚与硫酸反应生产4,4'-二羟基二苯砜的方法,包括使用至少一种选自氯苯,二氯苯,三氯苯,氯甲苯,二乙苯,二甲苯 ,十氢化萘,四氢化萘和四氯乙烷作为溶剂,并逐渐地并最终基本上完全从混合物中除去所述溶剂,同时将反应混合物保持在约160℃至约200℃的温度,以实现4,4'-二羟基二苯砜和 2,4'-二羟基二苯砜异构化为4,4'-二羟基二苯砜。

    Process for producing high-purity 4,4'-dihydroxydiphenyl sulfone
    25.
    发明申请
    Process for producing high-purity 4,4'-dihydroxydiphenyl sulfone 失效
    生产高纯度4,4'-二羟基二苯砜的方法

    公开(公告)号:US20050272956A1

    公开(公告)日:2005-12-08

    申请号:US10529074

    申请日:2003-09-22

    摘要: The present invention provides a process for producing 4,4′-dihydroxydiphenylsulfone of very high purity. In particular, the present invention provides a process for producing 4,4′-dihydroxydiphenylsulfone of high purity comprising the steps of subjecting phenol in combination with a sulfonating agent or phenolsulfonic acid to a dehydration reaction in the presence of an aromatic nonpolar solvent while suspending the resulting dihydroxydiphenylsulfone therein, mixing the reaction suspension with a polar solvent to at least partially dissolve the dihydroxydiphenylsulfone, and precipitating 4,4′-dihydroxydiphenylsulfone.

    摘要翻译: 本发明提供了一种制备非常高纯度的4,4'-二羟基二苯砜的方法。 特别地,本发明提供了一种制备高纯度的4,4'-二羟基二苯基砜的方法,包括以下步骤:在芳族非极性溶剂的存在下使苯酚与磺化剂或苯酚磺酸组合进行脱水反应,同时使 将反应悬浮液与极性溶剂混合至少部分溶解二羟基二苯基砜,并沉淀出4,4'-二羟基二苯基砜。

    Skin whitening external preparation
    26.
    发明申请
    Skin whitening external preparation 审中-公开
    皮肤美白外用配方

    公开(公告)号:US20050220733A1

    公开(公告)日:2005-10-06

    申请号:US10513371

    申请日:2003-05-07

    摘要: The invention relates to skin whitening external preparations which contain tocopherol phosphate and/or a salt thereof as an active ingredient capable of prevention and/or removal of skin pigmentation, cosmetics including the skin whitening external preparation and cosmetic cares using the cosmetic. The skin whitening external preparations have excellent skin whitening effects and are readily producible so that they can find wide use for the purpose of skin whitening.

    摘要翻译: 本发明涉及含有生育酚磷酸酯和/或其盐作为能够预防和/或去除皮肤色素沉积的化妆品的皮肤美白外用制剂,包括皮肤美白外用剂的化妆品和使用该化妆品的化妆品护理。 皮肤美白外用制剂具有优异的皮肤美白效果,并且易于生产,使得它们可以广泛用于皮肤美白的目的。

    Preparation for administration to animals and feeding method thereof
    27.
    发明授权
    Preparation for administration to animals and feeding method thereof 失效
    给予动物的制剂及其饲养方法

    公开(公告)号:US06299912B1

    公开(公告)日:2001-10-09

    申请号:US09556460

    申请日:2000-04-24

    IPC分类号: A23K100

    摘要: A preparation for administration to animals, comprising a sparingly soluble L-ascorbic acid-2-phosphoric ester salt having a solubility in water of 10 wt % or less, the solubility being a value obtained by placing 100 g of purified water in a 200 ml-volume beaker, stirring the water while keeping the temperature at 20° C., adding 0.1 g of the L-ascorbic acid-2-phosphoric ester salt every 5 minutes by taking care not to cause gelation, and 30 minutes after the addition of L-ascorbic acid-2-phosphoric ester salt when the undissolved L-ascorbic acid-2-phosphoric ester salt is observed visually in the aqueous solution, determining the amount in weight percentage of L-ascorbic acid-2-phosphoric ester salt added based on water, and a method for feeding animals, using the preparation.

    摘要翻译: 一种用于给予动物的制剂,其包含在水中的溶解度为10重量%以下的微溶L-抗坏血酸-2-磷酸酯盐,其溶解度为将100g纯化水放入200ml 在保持温度为20℃的同时搅拌水,每5分钟加入0.1g L-抗坏血酸-2-磷酸酯盐,注意不引起凝胶化,加入后30分钟 在水溶液中观察未溶解的L-抗坏血酸-2-磷酸酯盐时,测定L-抗坏血酸-2-磷酸酯盐的重量百分比量 在水上,以及饲养动物的方法。

    Anti-stress agent for animals and a method of reducing stress in animals
    29.
    发明授权
    Anti-stress agent for animals and a method of reducing stress in animals 失效
    动物用抗压剂和减轻动物压力的方法

    公开(公告)号:US5937790A

    公开(公告)日:1999-08-17

    申请号:US993714

    申请日:1997-12-18

    CPC分类号: A61K31/70

    摘要: An anti-stress agent for animals for reducing the growth inhibition or mortality of animals and a method of reducing stress using a feed composition having blended therein the anti-stress agent. The anti-stress agent for animals comprises one or more substances selected from L-ascorbic acid-2-phosphoric acid, a salt thereof and an L-ascorbic acid-2-glucoside, as an active ingredient, for inhibiting the increase of blood plasma lactate dehydrogenase (LDH), malate dehydrogenase (MDH) and aspartate aminotransferase (AspAT) and for inhibiting the increase of stress proteins in blood, which occur when animals are placed under stress. Also disclosed is a feed composition comprising the anti-stress agent, and a method of reducing the stress of animals by supplying the same as feed.

    摘要翻译: 用于降低动物的生长抑制或死亡率的动物的抗应激剂和使用其中混合有抗应激剂的饲料组合物来降低应激的方法。 用于动物的抗应激剂包含选自L-抗坏血酸-2-磷酸,其盐和L-抗坏血酸-2-葡萄糖苷作为活性成分的一种或多种物质,用于抑制血浆中的增加 乳酸脱氢酶(LDH),苹果酸脱氢酶(MDH)和天冬氨酸氨基转移酶(AspAT),并用于抑制动物在压力下发生的血液中应激蛋白的增加。 还公开了包含抗应激剂的饲料组合物,以及通过将饲料作为饲料供应来减少动物的压力的方法。