专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO1998023572A1 SOLVENT ASSISTED PROCESS FOR RECOVERY OF PHTHALIC ANHYDRIDE IN THE LIQUID PHASE BY DISTILLATION 审中-公开
标题翻译：用于通过蒸馏在液相中回收邻苯二甲酸酐的溶剂辅助方法
公开(公告)号：WO1998023572A1
公开(公告)日：1998-06-04
申请号：PCT/US1997022413
申请日：1997-11-26
申请人： EXXON CHEMICAL PATENTS INC.
发明人： EXXON CHEMICAL PATENTS INC. , BAIEL, James, J. , JONES, Larry, O. , GRAY, Ralph, O., Jr. , AGOSTO, Magdiel
IPC分类号： C07C51/573
CPC分类号： C07C51/573 , C07C63/16
摘要： A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature of about 130 DEG C or greater with a first stream comprising a solvent having a boiling point in the range between about 150 to 350 DEG C and a freezing point of less then 40 DEG C, and, optionally, at least one by-product selected from the group consisting of: maleic anhydride, citraconic anhydride, benzoic acid and phthalic anhydride, in a contacting means such that a substantial portion of the phthalic anhydride contained within the vapor phase oxidation product transfers from the vapor phase to a liquid phase and a substantial portion of the first stream which are more volatile than phthalic anhydride transfer from the liquid phase to the vapor phase and wherein a vapor-to-liquid weight ratio in the range of between about 2 to 20 is exhibited within the contacting means, thereby forming a liquid phase phthalic anhydride product having a phthalic anhydride concentration in the range between about 50-100 wt.%, preferably 90-100 wt.%, without the formation of an intermediate solid phase.
摘要翻译：从气相氧化产物中回收邻苯二甲酸酐作为液体的方法，该方法包括将具有约130℃或更高温度的气相氧化产物与包含沸点在约150℃范围内的溶剂的第一流混合 350℃，低于40℃的凝固点，以及任选的至少一种选自马来酸酐，柠康酸酐，苯甲酸和邻苯二甲酸酐的副产物，其接触方式使得气相氧化产物中所含的邻苯二甲酸酐的相当大部分从汽相转移到液相和大部分第一物流，其比邻苯二甲酸酐从液相转移到汽相更易挥发，其中a 在接触装置内表现出约2-20范围内的气 - 液重量比，从而形成液相邻苯二甲酸邻苯二甲酸酐浓度在约50-100重量％之间，优选90-100重量％的范围内，而不形成中间固相。

2. 发明申请

WO1998023571A1 LIQUID PHTHALIC ANHYDRIDE RECOVERY PROCESS USING A RECTIFICATION TOWER WITH BENZOIC ACID CONTROL 审中-公开
标题翻译：使用具有苯甲酸控制的整流塔的液体PHHALIC ANHYDRIDE RECOVERY PROCESS
公开(公告)号：WO1998023571A1
公开(公告)日：1998-06-04
申请号：PCT/US1997021862
申请日：1997-11-26
申请人： EXXON CHEMICAL PATENTS INC.
发明人： EXXON CHEMICAL PATENTS INC. , BAIEL, James, J. , JONES, Larry, O.
IPC分类号： C07C51/573
CPC分类号： C07C51/43 , C07C63/16
摘要： A process for recovering phthalic anhydride as a liquid from a vapor phase oxidation product which comprises mixing the vapor phase oxidation product having a temperature of about 130 DEG C or greater with a first stream comprising maleic anhydride, benzoic acid present in an amount of less than 8 mole %, based on the total concentration of the first stream, and at least one compound selected from the group consisting of citraconic anhydride and phthalic anhydride, in a rectification tower such that a substantial portion of the phthalic anhydride contained within the vapor phase oxidation product transfers from the vapor phase to a liquid phase and a substantial portion of the by-products contained in the first stream which are more volatile than phthalic anhydride transfer from the liquid phase to the vapor phase and wherein a vapor-to-liquid weight ratio in the range between about 2 to 20 is exhibited within the rectification tower, thereby forming a liquid phase phthalic anhydride product having a phthalic anhydride concentration in the range between about 50-100 wt.%.
摘要翻译：从气相氧化产物中回收邻苯二甲酸酐作为液体的方法，该方法包括将温度为约130℃或更高的气相氧化产物与包含马来酸酐的第一物流，苯甲酸的存在量小于 8摩尔％，基于第一料流的总浓度，以及至少一种选自柠康酐和邻苯二甲酸酐的化合物，在精馏塔中使得大部分邻苯二甲酸酐包含在气相氧化产物从蒸气相转移到液相，以及包含在第一物流中的大部分副产物，其比从邻苯二甲酸酐从液相转移到气相更易挥发，并且其中汽 - 液重量比在精馏塔内表现出约2〜20的范围，从而形成液相邻苯二甲酸酐p 邻苯二甲酸酐浓度在约50-100重量％之间的范围内。

3. 发明申请

WO1996011903A1 PREPARATION OF PLASTICIZER ESTERS FROM PHTHALIC ANHYDRIDE RESIDUE 审中-公开
标题翻译：从PHTHALIC ANHYDRID RESIDUE制备增塑剂
公开(公告)号：WO1996011903A1
公开(公告)日：1996-04-25
申请号：PCT/US1995013217
申请日：1995-10-18
申请人： EXXON CHEMICAL PATENTS INC.
发明人： EXXON CHEMICAL PATENTS INC. , JONES, Larry, O. , DANIELS, Paul, H. , KRAUSKOPF, Leonard, G. , RIGOPOULOS, Konstantinos, R. , SCHLOSBERG, Richard, H.
IPC分类号： C07C67/08
CPC分类号： C07C67/08 , Y02P20/582 , C07C69/80
摘要： A process for the formation of esters from at least one phthalic anhydride residue stream produced from the vapor phase oxidation of o-xylene, naphthalene and/or the like which comprises: (a) adding a phthalic anydride residue stream and a mono-alcohol to a reaction vessel to form a reaction mixture; and (b) heating the reaction mixture and maintaining a pressure sufficient to obtain boiling of the reaction mixture thereby converting any acid and/or anhydride components of the phthalic anydride residue stream to an ester.
摘要翻译：由从邻二甲苯，萘等的气相氧化产生的至少一种邻苯二甲酸酐残余物流形成酯的方法，其包括：（a）将邻苯二甲酸酐残留物流和单醇加入到形成反应混合物的反应容器; 和（b）加热反应混合物并保持足够的压力以获得反应混合物的沸腾，从而将邻苯二甲酸任何残留物流的任何酸和/或酸酐组分转化为酯。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式