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公开(公告)号：US06399685B1
公开(公告)日：2002-06-04
申请号：US09734053
申请日：2000-12-11
申请人： W. Dirk Klobucar , William B. Harrod , Billie B. Dadgar , Joseph D. McLean , Gary D. Heidebrecht , Hao V. Phan , Thomas R. Nicholas , Jeffrey L. Broeker
发明人： W. Dirk Klobucar , William B. Harrod , Billie B. Dadgar , Joseph D. McLean , Gary D. Heidebrecht , Hao V. Phan , Thomas R. Nicholas , Jeffrey L. Broeker
IPC分类号： C08K552
摘要： Emulsion formation is minimized or prevented and hydrolytic product degradation is suppressed during purification of impure bisphenol-A bis(diphenylphosphate). This is accomplished by forming a hydrocarbon solution of bisphenol-A bis(diphenylphosphate) plus impurities in a solvent comprising at least one aromatic hydrocarbon and at least one paraffinic hydrocarbon. Optionally, but preferably, this solution is washed with water or an aqueous buffer solution. Next, the hydrocarbon solution is washed one or more times with an aqueous alkaline washing solution that has a specific gravity that differs from the specific gravity of the hydrocarbon solution by at least about 0.05 gram per cubic centimeter. After each washing the mixture settles into a purified organic phase and a separate aqueous phase, and these phases are separated from each other. After completing the one or more alkaline washings and separations, the resultant purified organic phase is washed one or more times with water to remove alkaline components from the hydrocarbon solution, and after each such washing the washed mixture is settled into a less alkaline purified organic phase and a separate aqueous phase. These phases are separated, and preferably the purified product is recovered from the organic phase.
摘要翻译： 在纯化双酚A双（二苯基磷酸酯）的纯化期间，乳液形成被最小化或防止并且抑制了水解产物降解。 这通过在包含至少一种芳族烃和至少一种链烷烃的溶剂中形成双酚-A双（二苯基磷酸酯）加杂质的烃溶液来实现。 任选地，但优选地，该溶液用水或缓冲液水溶液洗涤。 接下来，将烃溶液用比表面积与烃溶液的比重不同的碱性水溶液洗涤一次或多次至少约0.05克/立方厘米。 每次洗涤后，混合物沉降到纯化的有机相和单独的水相中，并且这些相彼此分离。 在完成一次或多次碱性洗涤和分离之后，将所得纯化的有机相用水洗涤一次或多次以从烃溶液中除去碱性组分，并且在每次这样洗涤后，将洗涤的混合物沉降到较不碱性的纯化的有机相 和单独的水相。 分离这些相，优选从有机相中回收纯化的产物。
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2.发明授权
公开(公告)号：US5453538A
公开(公告)日：1995-09-26
申请号：US195274
申请日：1994-02-14
IPC分类号： B01J31/04 , C07C51/265 , B01J31/00
CPC分类号： B01J31/0231 , B01J31/04 , C07C51/265 , B01J2231/70 , B01J2531/38 , B01J2531/72 , B01J2531/845
摘要： A process for the manufacture of aromatic dicarboxylic acids is disclosed using a low bromine to metals ratio facilitated by the use of cerium along with the cobalt and manganese catalyst. Aromatic dicarboxylic acids such as terephthalic acid are useful in the manufacture of fiber, films, bottles and molded products.
摘要翻译： 公开了一种制备芳族二羧酸的方法，其中通过使用铈以及钴和锰催化剂促进了低溴与金属的比例。 芳族二羧酸如对苯二甲酸可用于制造纤维，薄膜，瓶子和模制产品。
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3.发明授权Process for preparing aromatic carboxylic acids with efficient treatments of gaseous effluent 失效通过有效处理气态流出物制备芳香族羧酸的方法
公开(公告)号：US6137001A
公开(公告)日：2000-10-24
申请号：US245214
申请日：1999-02-05
申请人： Jeffrey L. Broeker , Frank G. Belmonte , Thomas M. Bartos , Alakananda Bhattacharyya , Anne M. Karachewski , Bruce I. Rosen , Kenneth J. Abrams
发明人： Jeffrey L. Broeker , Frank G. Belmonte , Thomas M. Bartos , Alakananda Bhattacharyya , Anne M. Karachewski , Bruce I. Rosen , Kenneth J. Abrams
IPC分类号： C01B7/09 , C07C29/124 , C07C51/265 , C07C51/15
CPC分类号： C07C29/124 , C01B7/093 , C07C51/265 , Y02P20/131
摘要： Processes are disclosed for recovery of hydrogen bromide from one or more alkyl bromide compounds by hydrolyzing the alkyl bromide compounds to hydrogen bromide and corresponding alcohols, and simultaneously separating at least the alcoholic products of hydrolysis from aliphatic monocarboxylic acid solvent component. Also disclosed are process for preparing aromatic carboxylic acids by the exothermic, liquid-phase oxidation of an aromatic feedstock compound wherein the energy produced by the exothermic oxidation is efficiently recovered, and uses of water produced during the preparation of aromatic carboxylic acids are efficiently integrated into the process.
摘要翻译： 公开了通过将烷基溴化合物水解成溴化氢和相应的醇，同时将至少水解的醇产物与脂族一元羧酸溶剂组分分离，从一种或多种烷基溴化合物中回收溴化氢的方法。 还公开了通过芳族原料化合物的放热，液相氧化制备芳族羧酸的方法，其中通过放热氧化产生的能量被有效地回收，并且在制备芳族羧酸期间产生的水的使用被有效地整合到 的过程。
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公开(公告)号：US5414113A
公开(公告)日：1995-05-09
申请号：US138917
申请日：1993-10-18
CPC分类号： C07C51/09
摘要： Processes are disclosed for recovery and purification of dibasic aromatic acids from waste polyester film, fiber, bottles, manufacturing residues, and other manufactured articles. The processes comprises: depolymerizing polyester resin in a solvent under conditions suitable for hydrolysis of ester bonds to obtain a mixture containing a solution of aromatic acid and impurities consisting of alcohol and/or other components of the resin; burning impurities in a liquid-phase oxidation with an oxygen-containing gas in the presence of an oxidation catalyst at elevated pressures and temperatures, to obtain an oxidation product containing the desired aromatic acid; and crystallizing and separating from the oxidation system a resulting crude dibasic aromatic acid. Crude acid is, optionally, hydrogenated in an aqueous solution at elevated temperatures and pressures in the presence of hydrogen and an insoluble metal-containing catalyst, which is thereupon separated from the aqueous solution, and purified dibasic aromatic acid recovered by crystallization and mechanical separation from the aqueous solution. Purified terephthalic acid has, typically, a L*-value in a range of from about 95 to about 100, an a*-value in a range of from about -1 to about +1, and a b*-value in a range of from about 0.5 to about 2.
摘要翻译： 公开了用于从废聚酯膜，纤维，瓶，制造残余物和其它制品中回收和纯化二元芳香酸的方法。 该方法包括：在适于水解酯键的条件下，在溶剂中解聚聚酯树脂，得到含有芳族酸溶液和由醇和/或树脂的其它组分组成的杂质的混合物; 在氧化催化剂存在下，在升高的压力和温度下，用含氧气体进行液相氧化中的杂质，得到含有所需芳香酸的氧化产物; 并从氧化体系中结晶并分离得到的粗二元芳香酸。 任选地，在氢气和不溶性金属的催化剂存在下，在高温和高压下，在水溶液中氢化粗酸，随后将其与水溶液分离，通过结晶和机械分离回收的纯化的二元芳香酸 水溶液。 纯化的对苯二甲酸通常具有在约95至约100的范围内的L *值，在约-1至约+1的范围内的a *值和在 约0.5至约2。
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