.alpha.,.alpha.'-Bis(2-hydroxyethoxy)-2,3,5,6-tetrabromo-p-xylene
    1.
    发明授权
    .alpha.,.alpha.'-Bis(2-hydroxyethoxy)-2,3,5,6-tetrabromo-p-xylene 失效
    {60,{60 {40-双(2-羟基乙氧基)-2,3,5,6-四溴 - 对二甲苯

    公开(公告)号:US4171456A

    公开(公告)日:1979-10-16

    申请号:US838725

    申请日:1977-10-03

    IPC分类号: C07C43/178 C07C43/28

    CPC分类号: C07C43/1786

    摘要: The title compound can be made by reacting ethylene glycol with hexabromo-p-xylene in the presence of anhydrous potassium carbonate. The compound is useful as a fire retardant for plastics, and can be used to form a polyester of the linear type. Fibers made from such polyesters are useful for making fire retardant textiles, carpets, drapes, and garments.

    摘要翻译: 标题化合物可以在无水碳酸钾存在下使乙二醇与六溴对二甲苯反应制得。 该化合物可用作塑料的阻燃剂,并且可用于形成线型的聚酯。 由这种聚酯制成的纤维可用于制造阻燃纺织品,地毯,窗帘和服装。

    Process for preparing 2,2-bis(4-hydroxy-phenyl) propane from
distillation by-products thereof
    3.
    发明授权
    Process for preparing 2,2-bis(4-hydroxy-phenyl) propane from distillation by-products thereof 失效
    从蒸馏副产物制备2,2-双(4-羟基 - 苯基)丙烷的方法

    公开(公告)号:US4188496A

    公开(公告)日:1980-02-12

    申请号:US863667

    申请日:1977-12-23

    CPC分类号: C07C37/00 C07C37/48

    摘要: A process is disclosed for the production of 2,2-bis(4-hydroxyphenyl) propane, herein referred to as bisphenol-A, from by-products remaining after purification distillation of bisphenol-A produced from a condensation reaction of phenol and acetone. The process comprises mixing the by-products with phenol and treating the resulting mixture with anhydrous hydrogen bromide to isomerize those by-products isomerizable to bisphenol-A for subsequent recovery.

    摘要翻译: 公开了用于由苯酚和丙酮的缩合反应产生的双酚A的纯化蒸馏后残留的副产物生产2,2-双(4-羟基苯基)丙烷(以下称为双酚A)的方法。 该方法包括将副产物与苯酚混合并用无水溴化氢处理所得混合物以使可异构化为双酚A的副产物异构化以用于随后的回收。

    Process for producing bisphenols
    4.
    发明授权
    Process for producing bisphenols 失效
    生产双酚的方法

    公开(公告)号:US4201878A

    公开(公告)日:1980-05-06

    申请号:US876703

    申请日:1978-02-10

    摘要: Bisphenols substantially free of by-products, are produced rapidly by reacting a phenol and a compound of the formulae: ##STR1## wherein R and R' are hydrogen, lower alkyl or aryl; X is lower alkoxy or the same as X'; Y is chlorine or the same as X; X' is aryloxy; Z is a 1,2- or 1,3-propylenedioxy (that may optionally carry hydroxy, lower alkyl or lower hydroxyalkyl substituents), or arylenedioxy radical; n is integer from three to nine; m is (n-1).

    摘要翻译: 基本上不含副产物的双酚通过苯酚和下式的化合物反应快速生成:其中R和R'是氢,低级烷基或芳基; X是低级烷氧基或与X'相同; Y为氯或与X相同; X'是芳氧基; Z是1,2-或1,3-亚丙二氧基(可以任选地带有羟基,低级烷基或低级羟烷基取代基)或亚芳基二氧基; n为3〜9的整数; m是(n-1)。

    Process for recovering 2,2-bis(4-hydroxyphenyl)propane from distillation
residues from the preparation thereof
    5.
    发明授权
    Process for recovering 2,2-bis(4-hydroxyphenyl)propane from distillation residues from the preparation thereof 失效
    从其制备的蒸馏残余物中回收2,2-双(4-羟基苯基)丙烷的方法

    公开(公告)号:US4180683A

    公开(公告)日:1979-12-25

    申请号:US863668

    申请日:1977-12-23

    CPC分类号: C07C37/86 C07C37/84

    摘要: A process is disclosed for the recovery of 2,2-bis(4-hydroxyphenyl)propane, herein referred to as bisphenol-A, from residues remaining after purification distillation of bisphenol-A produced from a condensation reaction of phenol and acetone. The process comprises mixing the residues with phenol in the absence of acidic reagents to precipitate a bisphenol-A-phenol crystalline adduct and recovering bisphenol-A from the separated adduct.

    摘要翻译: 公开了从苯酚和丙酮的缩合反应产生的双酚A的纯化蒸馏后残留的残余物中回收2,2-双(4-羟基苯基)丙烷(以下称为双酚A)的方法。 该方法包括在不存在酸性试剂的情况下将残基与苯酚混合以沉淀双酚A-苯酚结晶加合物,并从分离的加合物中回收双酚-A。

    Process for preparing 2,2-bis(4-hydroxy-phenyl) propane from
distillation by-products thereof
    7.
    发明授权
    Process for preparing 2,2-bis(4-hydroxy-phenyl) propane from distillation by-products thereof 失效
    从蒸馏副产物制备2,2-双(4-羟基 - 苯基)丙烷的方法

    公开(公告)号:US4192954A

    公开(公告)日:1980-03-11

    申请号:US863666

    申请日:1977-12-23

    CPC分类号: C07C37/00

    摘要: A process is disclosed for the production of 2,2-bis(4-hydroxyphenyl) propane, herein referred to as bisphenol-A, from by-products remaining after purification distillation of bisphenol-A produced from a condensation reaction of phenol and acetone. The process comprises mixing the by-products with phenol and adding anhydrous hydrogen chloride under superatmospheric pressure to the resulting mixture to isomerize those by-products isomerizable to bisphenol-A for subsequent recovery.

    摘要翻译: 公开了用于由苯酚和丙酮的缩合反应产生的双酚A的纯化蒸馏后残留的副产物生产2,2-双(4-羟基苯基)丙烷(以下称为双酚A)的方法。 该方法包括将副产物与苯酚混合并在超大气压下加入无水氯化氢至所得混合物,使可异构化为双酚A的副产物异构化以便随后回收。