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公开(公告)号：US4569990A
公开(公告)日：1986-02-11
申请号：US644436
申请日：1984-08-27
IPC分类号： C08G65/20
CPC分类号： C08G65/20
摘要： The color level of poly(tetramethylene ether) glycol made by polymerizing tetrahydrofuran using fluosulfonic acid as the catalyst is significantly lower if the fluosulfonic acid contains no more than about 1200 ppm of iron sulfites.
摘要翻译： 如果氟磺酸含有不超过约1200ppm的亚硫酸铁，则通过使用氟磺酸作为催化剂使四氢呋喃聚合制得的聚（四亚甲基醚）二醇的颜色水平显着降低。
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公开(公告)号：US4590054A
公开(公告)日：1986-05-20
申请号：US776861
申请日：1985-09-16
CPC分类号： C08G65/20
摘要： The color level of poly(tetramethylene ether) glycol made by polymerizing tetrahydrofuran using fluosulfonic acid as the catalyst is significantly lower if the fluosulfonic acid contains no more than about 1200 ppm of iron sulfites.
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3.发明授权Polymerization of tetrahydrofuran using a fluorinated acidic catalyst and maleic acid/maleic anhydride mixture as molecular weight control agent 失效使用氟化酸性催化剂和马来酸/马来酸酐混合物作为分子量控制剂聚合四氢呋喃
公开(公告)号：US5130470A
公开(公告)日：1992-07-14
申请号：US676065
申请日：1991-03-27
摘要： A process for polymerizing tetrahydrofuran using a fluorinated resin containing sulfonic acid groups a trifluoromethane sulfonic acid as catalyst and a mixture of maleic acid and maleic anhydride as weight control agent. The product has the formula ##STR1## which can be hydrogenated to produce polytetramethylene ether glycol. The preferred molecular weight range of the polytetramethylene ether glycol is 600 to 4,000.
摘要翻译： 使用含有磺酸基的氟化树脂作为催化剂和马来酸酐与马来酸酐的混合物作为重量控制剂使四氢呋喃聚合的方法。 该产品具有可被氢化制备聚四亚甲基醚二醇的式“IMAGE”。 聚四亚甲基醚二醇的优选分子量范围为600〜4000。
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4.发明授权Polymerizing tetrahydrofuran to produce polytetramethylene ether glycol using a modified fluorinated resin catalyst containing sulfonic acid groups 失效使用含有磺酸基团的改性氟化树脂催化剂聚合四氢呋喃以制备聚四亚甲基醚二醇
公开(公告)号：US5118869A
公开(公告)日：1992-06-02
申请号：US654496
申请日：1991-02-13
IPC分类号： C08G65/10 , C07C41/01 , C08G65/02 , C08G65/20 , C08G65/30 , C08L25/00 , C08L27/12 , C08L71/00
摘要： A catalyst and process for preparing it and its use in polymerizing tetrahydrofuran to produce polytetramethylene ether glycol ether are disclosed. The catalyst is a blend of a fluorinated resin containing sulfonic acid groups and a fluorinated resin containing carboxylic acid groups. The catalyst is partially dried to contain from 1,000 to 2,000 ppm water, so that when it is used to polymerize tetrahydrofuran, the product polytetramethylene ether glycol will have a number average molecular weight of from 250 to 4,000.
摘要翻译： 公开了催化剂及其制备方法及其在四氢呋喃聚合中的用途，以生产聚四亚甲基醚二醇醚。 催化剂是含有磺酸基的含氟树脂和含有羧酸基团的含氟树脂的混合物。 将催化剂部分干燥以含有1,000至2,000ppm的水，因此当用于聚合四氢呋喃时，产物聚四亚甲基醚二醇的数均分子量为250至4000。
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公开(公告)号：US09040754B2
公开(公告)日：2015-05-26
申请号：US14233018
申请日：2012-07-17
申请人： Robert B. Osborne , Willard L. Quon
发明人： Robert B. Osborne , Willard L. Quon
摘要： An improved method for recovering a purified polyether polyol comprising the steps of providing an aqueous solution of a polyether polyol containing an alkali metal catalyst residual formed from a transesterification process, contacting the aqueous solution with a stoichiometric excess of magnesium sulfate to form a second aqueous solution, removing water from said second aqueous solution at a temperature above the melt temperature of said polyether polyol to produce a dehydrated slurry containing a molten polyether polyol phase essentially free of residual alkali metal and a precipitated solid phase comprising sulfate and/or sulfite salts of the alkali metal catalyst, magnesium hydroxide, and excess magnesium sulfate and/or sulfide, passing the dehydrated slurry of through a filtration system comprising a filtration press to separate the molten polyether polyol phase from the precipitated solid phase, wherein the filtration press is treated with a filter aid that is essentially free of transition metal oxide content, separating the molten polyether polyol phase substantially free of water, residual alkali metal catalyst and transition metal contaminants from the precipitated solid phase and recovering polyether polyol from the separated polyether polyol phase.
摘要翻译： 一种用于回收纯化的聚醚多元醇的改进方法，包括以下步骤：提供含有由酯交换方法形成的碱金属催化剂残余物的聚醚多元醇水溶液，使该水溶液与化学计量过量的硫酸镁接触以形成第二水溶液 在高于所述聚醚多元醇的熔融温度的温度下从所述第二水溶液中除去水，以产生含有基本上不含残余碱金属的熔融聚醚多元醇相的脱水浆料和包含硫酸盐和/或亚硫酸盐的沉淀固相 碱金属催化剂，氢氧化镁和过量的硫酸镁和/或硫化物，使脱水的浆料通过包括过滤机的过滤系统，以将熔融的聚醚多元醇相与沉淀的固相分离，其中过滤机用 基本上免费的助滤剂o f过渡金属氧化物含量，从沉淀的固相中分离基本上不含水的熔融聚醚多元醇相，残留的碱金属催化剂和过渡金属污染物，并从分离的聚醚多元醇相回收聚醚多元醇。
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公开(公告)号：US20140303405A1
公开(公告)日：2014-10-09
申请号：US14233018
申请日：2012-07-17
申请人： Robert B. Osborne , Willard L. Quon
发明人： Robert B. Osborne , Willard L. Quon
IPC分类号： C07C41/34
摘要： An improved method for recovering a purified polyether polyol comprising the steps of providing an aqueous solution of a polyether polyol containing an alkali metal catalyst residual formed from a transesterification process, contacting the aqueous solution with a stoichiometric excess of magnesium sulfate to form a second aqueous solution, removing water from said second aqueous solution at a temperature above the melt temperature of said polyether polyol to produce a dehydrated slurry containing a molten polyether polyol phase essentially free of residual alkali metal and a precipitated solid phase comprising sulfate and/or sulfite salts of the alkali metal catalyst, magnesium hydroxide, and excess magnesium sulfate and/or sulfide, passing the dehydrated slurry of through a filtration system comprising a filtration press to separate the molten polyether polyol phase from the precipitated solid phase, wherein the filtration press is treated with a filter aid that is essentially free of transition metal oxide content, separating the molten polyether polyol phase substantially free of water, residual alkali metal catalyst and transition metal contaminants from the precipitated solid phase and recovering polyether polyol from the separated polyether polyol phase.
摘要翻译： 一种用于回收纯化的聚醚多元醇的改进方法，包括以下步骤：提供含有由酯交换方法形成的碱金属催化剂残余物的聚醚多元醇水溶液，使该水溶液与化学计量过量的硫酸镁接触以形成第二水溶液 在高于所述聚醚多元醇的熔融温度的温度下从所述第二水溶液中除去水，以产生含有基本上不含残余碱金属的熔融聚醚多元醇相的脱水浆料和包含硫酸盐和/或亚硫酸盐的沉淀固相 碱金属催化剂，氢氧化镁和过量的硫酸镁和/或硫化物，使脱水的浆料通过包括过滤机的过滤系统，以将熔融的聚醚多元醇相与沉淀的固相分离，其中过滤机用 基本上免费的助滤剂o f过渡金属氧化物含量，从沉淀的固相中分离基本上不含水的熔融聚醚多元醇相，残留的碱金属催化剂和过渡金属污染物，并从分离的聚醚多元醇相回收聚醚多元醇。
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