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1.发明授权
公开(公告)号：US5395915A
公开(公告)日：1995-03-07
申请号：US104920
申请日：1993-08-12
申请人： Shigeru Iimuro , Satoru Ito , Tomoko Takashima , Takashi Kitamura
发明人： Shigeru Iimuro , Satoru Ito , Tomoko Takashima , Takashi Kitamura
摘要： Herein disclosed is a method for simultaneously preparing a highly pure bisphenol F and/or a bisphenol F for general use and a novolak phenol resin and/or a high molecular weight novolak phenol resin comprising the steps of:(1) a preparation step comprising reacting phenol with formaldehyde in the presence of an acid catalyst and removing the acid catalyst, water and the unreacted phenol from the resulting reaction product to give a crude bisphenol F;(2) a distillation step comprising distilling a part of the crude bisphenol F to give a highly pure bisphenol F, as a distillate, having a binuclear moiety-content of not less than 95% by weight and a novolak phenol resin, as a still-bottom product, having a binuclear moiety-content of not more than 15% by area;(3) a step for mixing the highly pure bisphenol F with the remaining crude bisphenol F to give a bisphenol F for general use; and(4) a step for polymerizing the novolak phenol resin with formaldehyde in the presence of an acid catalyst to give a high molecular weight novolak phenol resin.
摘要翻译： 本文公开了一种用于同时制备用于一般用途的高纯度双酚F和/或双酚F和酚醛清漆酚醛树脂和/或高分子量酚醛清漆酚树脂的方法，包括以下步骤：（1）制备步骤，包括使 苯酚与甲酸在酸催化剂存在下，从所得反应产物中除去酸催化剂，水和未反应的苯酚，得到粗双酚F; （2）蒸馏步骤，包括蒸馏粗双酚F的一部分，得到作为蒸馏物的高纯度双酚F，双核部分含量不小于95重量％，酚醛清漆酚树脂作为静止物 双产物，双核部分含量不超过面积的15％; （3）将高纯度双酚F与剩余的粗双酚F混合以得到通常使用的双酚F的步骤; 和（4）在酸催化剂存在下使酚醛清漆酚醛树脂与甲醛聚合的步骤，得到高分子量酚醛清漆酚醛树脂。
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2.发明授权Phenolic resin compositions derived from bisphenol compounds and their condensates 失效衍生自双酚化合物及其缩合物的酚醛树脂组合物
公开(公告)号：US5552509A
公开(公告)日：1996-09-03
申请号：US114081
申请日：1993-08-31
CPC分类号： B22C1/2253 , C08G8/08
摘要： A phenolic resin composition herein disclosed comprises, as essential components, (i) at least one phenol resin A selected from the group consisting of residues formed through purification of bisphenol A, residues obtained by cleaving the bisphenol A-purification residue, condensates of the bisphenol A-purification residue obtained by reacting the bisphenol A-purification residue with formaldehyde and condensates of the cleavage residue obtained by reacting the cleavage residue with formaldehyde, and (ii) at least one phenolic resin B selected from the group consisting of high-boiling fraction obtained through production of bisphenol F and condensates of the high-boiling fraction obtained by reacting the high-boiling fraction with formaldehyde. The phenolic resin composition can be used in making resin-coated sand particles which do not give out a bad smell and do not generate any soot and smoke during forming a mold by the shell molding method and which have good disintegration properties without using any sand-baking process.
摘要翻译： 本文公开的酚醛树脂组合物包含作为必要组分的（i）至少一种选自由双酚A的纯化形成的残基的酚醛树脂A，通过裂解双酚A纯化残余物获得的残基，双酚的缩合物 通过使双酚A纯化残余物与甲醛反应获得的A净化残余物和通过使裂解残基与甲醛反应而获得的裂解残基的缩合物，和（ii）至少一种酚醛树脂B，其选自高沸点馏分 通过生产双酚F和通过使高沸点馏分与甲醛反应获得的高沸点馏分的冷凝物获得。 酚醛树脂组合物可以用于制造不产生不良气味的树脂涂覆的砂粒，并且在通过壳模塑法形成模具期间不产生任何烟灰和烟雾，并且在不使用任何砂型的情况下具有良好的崩解性能， 烘烤过程。
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公开(公告)号：US4950804A
公开(公告)日：1990-08-21
申请号：US310350
申请日：1989-02-14
摘要： A process for producing high-purity bisphenol A comprises reacting phenol with acetone in the presence of hydrochloric acid as the catalyst to obtain a product mixture, removing the hydrochloric acid from the product mixture, thereby yielding a liquid mixture, adding water to the liquid mixture, evaporating a water-phenol mixture from the liquid mixture under reduced pressure, thereby cooling the liquid mixture and crystallizing out the adduct of bisphenol A with phenol, and finally recovering bisphenol A from the adduct, wherein an improvement comprises treating the water-phenol mixture with a weakly basic ion-exchange resin and recycling and reusing the treated mixture as the water to be added to the liquid mixture. This process does not causes any troubles such as the corrosion of equipment and the decomposition and discoloration of bisphenol A during distillation.
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公开(公告)号：US4950807A
公开(公告)日：1990-08-21
申请号：US308667
申请日：1989-02-10
CPC分类号： C07C37/20
摘要： A process for producing high-purity bisphenol A comprises reacting phenol with acetone in the presence of an acid catalyst to obtain a product mixture, removing the acid catalyst from the product mixture, thereby yielding a liquid mixture, treating the liquid mixture with a weakly basic ion-exchange resin having pyridyl groups as the exchange groups, and purifying the treated liquid mixture. The process does not cause any corrosion of equipment and any decomposition and discoloration of bisphenol A during distillation.
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公开(公告)号：US4950805A
公开(公告)日：1990-08-21
申请号：US310345
申请日：1989-02-14
CPC分类号： C07C37/84
摘要： A process for washing and obtaining solids of a slurry comprises feeding a slurry containing the adduct of bisphenol A with phenol crystallized from a phenol solution of bisphenol A to a first solid-liquid separator to separate solids from the slurry, transferring the solids separated by the first solid-liquid separator to an agitation tank in which the solids are reslurried, feeding the slurry obtained in the agitation tank to a second solid-liquid separator, said second solid-liquid separator being intended to obtain the solids from the slurry discharged from the agitation tank, and permitting the admission of a washing solvent to wash the solids, and permitting the filtrate and washings to be recovered independently, feeding the washing solvent to the second solid-liquid separator, feeding all of the washings from the second solid-liquid separator to the agitation tank, feeding a part of the filtrate from the second solid-liquid separator to the agitation tank, and discharging the remainder of the filtrate from the system. The process makes it possible to produce a high-purity adduct of bisphenol A with phenol and hence high-purity bisphenol A.
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公开(公告)号：US4950806A
公开(公告)日：1990-08-21
申请号：US311844
申请日：1989-02-17
IPC分类号： C07C37/84
CPC分类号： C07C37/84
摘要： A process for crystallizing the adduct of bisphenol A with phenol from a phenol solution in the presence of water comprises controlling the concentration of bisphenol A in said solution by removing portion of the phenol from said solution or adding phenol to said solution according to feedback control based on the measurement of solution density to obtain an adjusted solution, and feeding the adjusted solution to the crystallizer in which its inside wall is kept at a temperature higher than that of the adjusted solution, provided the temperature difference being smaller than 5.degree. C. The crystallized adduct has a uniform particle size and a high purity.
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公开(公告)号：US4935553A
公开(公告)日：1990-06-19
申请号：US294120
申请日：1989-01-06
CPC分类号： C07C37/20
摘要： A process for preparing high purity bisphenol A comprising feeding continuously phenol and acetone in the presence of a hydrochloric acid catalyst into a first stage reactor and reacting phenol and acetone in the range of 20-60 mol % of acetone conversion and continuously removing the first reaction product from the first stage reactor. The first reaction product is fed into a second stage reactor and the reaction of phenol and acetone is completed to obtain a second reaction product from which bisphenol A is recovered.
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公开(公告)号：US4918245A
公开(公告)日：1990-04-17
申请号：US276658
申请日：1988-11-28
摘要： This invention is a process for the preparation of bisphenol A from acetone and phenol. By this invention, the formation of by-products is extremely decreased and post treatment steps can be simplified.This invention involves the following steps. (1) One mole of acetone is reacted with 4 to 12 moles of phenol in the presence of a sulfonic acid type cation exchange resin catalyst modified with a mercapto group-containing compound such as mercaptoethylamine to convert 20 to 60% of acetone, and (2) the reaction mixture containing unreacted acetone is successively reacted to the presence of the hydrochloric acid catalyst.The formation of by-products such as 2-(2-hydroxyphenyl)-2-(4-hydroxyphenyl)propane, Dianin's compound and the like is remarkably reduced by the process of this invention.
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9.发明授权
公开(公告)号：US4942265A
公开(公告)日：1990-07-17
申请号：US276809
申请日：1988-11-28
CPC分类号： C07C39/16
摘要： The process for preparing 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) by reacting acetone with phenol and decomposing the resultant adduct of bisphenol A and phenol is well known. However, the quality of bisphenol A thus obtained is not always satisfactory.In the process of this invention, the adduct is washed with phenol recovered by decomposing an adduct of bisphenol A and phenol, and then bisphenol A is prepared by decomposing the washed adduct.The bisphenol A prepared by the process of this invention has an extremely high quality and is suitable for the preparation of polycarbonate used for optical parts.
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公开(公告)号：US4954661A
公开(公告)日：1990-09-04
申请号：US321218
申请日：1989-03-09
IPC分类号： C07C39/16
摘要： A method for preparing high-purity bisphenol A which comprises a principal process comprising a first reaction step for reacting phenol with acetone, a first concentration adjusting step, a first crystallization step for precipitating crystals of the adduct of bisphenol A with phenol, a first separation step for separating a solution containing the crystals of the adduct into the crystals and the mother liquor and a phenol removing step for removing phenol from the crystals of the adduct; and a sub-process comprising a second reaction step for reacting p-isopropenylphenol with phenol, a second concentration adjusting step, a second crystallization step, a second separation step for separating a solution containing the second any crystals of the adduct into the second any crystals and the second mother liquor and a cleaving step, the first mother liquor from the principal process being fed to the sub-process and the second any crystals of the adduct from the sub-process being fed to the principal process, is herein provided.In addition, a method for preparing high-purity bisphenol A which comprises a principal process comprising a first reaction/catalyst removing step for reacting phenol with acetone and removing the catalyst, a crystallization step for precipitating the adduct of bisphenol A with phenol, a solid-liquid separation step for separating the reaction solution into the crystals of the adduct and the mother liquor and a phenol removing step for removing phenol from the adduct crystals; and a sub-process comprising a second reaction/catalyst removing step for reacting p-isopropenylphenol with phenol and removing the catalyst, a second phenol removing step, a distillation step for separating bisphenol A and low boiling and high boiling substances and a cleaving step, the mother liquor from the principal process being fed to the sub-process and the distilled bisphenol A from the sub-process being fed to the principal process, is also herein provided.
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