CAS: 2540-99-0; 5,5'-Sulfonylbis(Isobenzofuran-1,3-Dione)

上下游产品

3,3',4,4'-diphenylsulfonetetracarboxylic acid 3,3′,4,4′-diphenylsulfidetetracarboxylic dianhydride 3,3',4,4'-diphenylsulfonetetracarboxylic acid

4,4'-硫二邻苯二甲酸酐置于dipotassium Peroxodisulfate,Ammonium Cerium (Iv) Nitrate,四丁基碘化铵体系中,用 水,乙腈 用作溶剂,化学反应生成3,3',4,4'-二苯基砜四羧酸二酸酐
参考文献:一种3,3',4,4'-二苯基砜四羧酸二酸酐的制 备方法
标题:一种3,3',4,4'-二苯基砜四羧酸二酸酐的制 备方法
摘要:本发明公开了一种3,3',4,4'‑二苯基砜四羧酸二酸酐的制备方法.其包括如下步骤:1)将4‑氯苯酐溶解于二甲基亚砜中,然后加入硫磺及叔丁醇钠,升温至40oc滴入二硫化碳,至原料反应完全后,减压回收部分溶剂,剩余物加入水中,过滤,水洗,干燥得到3,3',4,4'‑二苯基硫醚四羧酸二酸酐;2)3,3',4,4'‑二苯基硫醚四羧酸二酸酐溶解于乙腈中,加入硝酸铈铵及四丁基碘化铵和水,在加热条件下分批加入过硫酸钾,至3,3',4,4'‑二苯基硫醚四羧酸二酸酐反应完全后,向反应液中加入水,降温至5oc过滤,水洗,干燥,得到3,3',4,4'‑二苯基砜四羧酸二酸酐.本发明提供的制备3,3',4,4'‑二苯基砜四羧酸二酸酐的方法具有以下有益效果:原材料易于购买,反应溶剂可回收,后处理操作简单,收率高,产品质量好以及环境污染较小等优点.

专利信息

专利号:WO-2024208875-A1
优先权日:2023-04-03
标题:Organic reinforcement of a polyamide with the in situ synthesis of a polyimide phase by reactive extrusion
发明人：CASSAGNAU PHILIPPE; DELAGE KARIM; BOUNOR-LEGARE VÉRONIQUE; MARESTIN CATHERINE; DUBOIS CHARLOTTE; GAROIS NICOLAS
权利人:TOTALENERGIES ONETECH; UNIV CLAUDE BERNARD LYON 1 UCBL; CENTRE NAT RECH SCIENT; UNIV JEAN MONNET SAINT ETIENNE UJM; INSTITUT NAT DES SCIENCES APPLIQUEES DE LYON INSA LYON
摘要:The disclosure relates to a reinforced polyamide and to a process to produce a reinforced polyamide comprising providing components being one or more polyamides, one or more dianhydrides, and one or more diamines; wherein the one or more polyamides are provided at a content of at least 60 wt.% based on the total weight of the components and wherein the one or more polyamides comprise at least one polyamide having amide groups separated by at least 10 CH2 groups; performing in situ synthesis of a polyimide by reactive extrusion of the components wherein the residence time is less than 10 minutes; and recovering a polyamide-polyimide blend being a reinforced polyamide comprising a continuous polyamide phase and a polyimide dispersed phase.

专利号:WO-2024170663-A1
优先权日:2023-02-15
标 题:Organic reinforcement of an elastomer with the in situ synthesis of a polyimide phase by reactive extrusion
发明人：CASSAGNAU PHILIPPE; DELAGE KARIM; BOUNOR-LEGARE VÉRONIQUE; MARESTIN CATHERINE; DUBOIS CHARLOTTE; GAROIS NICOLAS
权利人:TOTALENERGIES ONETECH; UNIV CLAUDE BERNARD LYON 1 UCBL; CENTRE NAT RECH SCIENT; UNIV JEAN MONNET SAINT ETIENNE; INSTITUT NAT DES SCIENCES APPLIQUEES DE LYON INSA LYON
摘要:The present disclosure relates to a process to produce a reinforced elastomeric material and to the reinforced elastomeric material. The process comprises the steps of providing components comprising a grafted elastomer, one or more dianhydrides, and one or more diamines; wherein the grafted elastomer is provided at a content of at least 60 wt.% based on the total weight of the components; performing in situ synthesis of a polyimide phase in the grafted elastomer by reactive extrusion of the components in a twin-screw extruder comprising main hopper wherein the screw profile comprises two or more reverse conveying elements forming two or more hot zones to form an elastomer-polyimide blend; and recovering said elastomer-polyimide blend being a reinforced elastomeric material.

专利号:WO-2024208876-A1
优先权日:2023-04-03
标题 :Ductile polyamide with the in situ synthesis of a polyimide phase by reactive extrusion
发明人：CASSAGNAU PHILIPPE; DELAGE KARIM; BOUNOR-LEGARE VÉRONIQUE; MARESTIN CATHERINE; DUBOIS CHARLOTTE; GAROIS NICOLAS
权利人:TOTALENERGIES ONETECH; UNIV CLAUDE BERNARD LYON 1 UCBL; CENTRE NAT RECH SCIENT; UNIV JEAN MONNET SAINT ETIENNE UJM; INSTITUT NAT DES SCIENCES APPLIQUEES DE LYON INSA LYON
摘要:The disclosure relates to a ductile polyamide and to a process to produce a ductile polyamide comprising providing components comprising one or more polyamides, one or more dianhydrides, and one or more diamines; wherein the one or more polyamides are provided at a content of at least 60 wt.% based on the total weight of the components; and wherein the one or more polyamides comprise at least one polyamide having amide groups separated by less than 10 carbon atoms; performing in situ synthesis of a polyimide by reactive extrusion of the components wherein the residence time is less than 10 minutes; and recovering a polyamide-polyimide blend being a ductile polyamide comprising a continuous polyamide phase and a dispersed polyimide phase.

专利号:US-10808079-B2
优先权日:2015-03-27
标 题:Synthesis of copolyimides containing fluorine and silicon surface modifying agents
发明人：CONNELL JOHN W; WOHL JR CHRISTOPHER J; DOSS JEREME R; CROW ALLISON M; KIM WILLIAM T; LIN YI
权利人:NASA
摘要:Various embodiments provide random copolyimides that may possess the mechanical, thermal, chemical and optical properties associated with polyimides yet achieve a low energy surface. In various embodiments, the copolyimides may be prepared using a minor amounts of a diamino terminated fluorinated alkyl ether oligomer and a diamino terminated siloxane oligomer. The various embodiments include processes for making the copolyimides containing fluorine and silicon surface modifying agents and anisotropic coatings and articles of manufacture from them. Thus the coatings and articles of manufacture made with the copolyimides of the various embodiments may be characterized as having an anisotropic fluorine and silicon composition and low surface energy.

专利号:WO-2023156270-A1
优先权日:2022-02-18
标题:Coumarin synthesis and uses thereof
发明人：CONRATH UWE; LANGENBACH CASPAR; BEYER SEBASTIAN FELIX; SCHWINGES PATRICK; SCHULTHEISS HOLGER; BEESLEY ALEXANDER; LINKE CEDRIC
权利人:BASF SE; RWTH AACHEN
摘要:The present invention relates to genes, materials and methods for coumarin synthesis and the application thereof for improving plant health, preferably against infection by phythopathogenic microorganisms, and/or for improving plant health against coumarin-induced adverse effects on plant health. Furthermore, the invention pertains to methods and uses of such genes and mate- rials for creating correspondingly beneficial plant cells, plant parts and whole plants, and relates to products obtained from such plants or plant parts.

专利号:US-2024287253-A1
优先权日:2020-08-07
标题:Process for polyimide synthesis and polyimides made therefrom
发明人：KERSZULIS JUSTIN; KANNAN ABHIRAM; POLIAK PETER LUCAS; LOPEZ LIZA; HULL KELBY; HOMYAK PATRICK; CHACHRA GAURAV; MCGANN CHRISTOPHER LELAND; ZOOMBELT ARJAN; ISHIWATA KOJI
权利人:ZYMERGEN INC; SUMITOMO CHEMICAL CO
摘要:The present disclosure describes methods of polyimide synthesis and polyimides made therefore. The method includes placing a tetracarboxylic compound and a solvent in a reaction vessel and adding a first amount of a diamine. The first amount of the diamine is not more than 99.5 mol % of the tetracarboxylic compound inside the reaction vessel. The method can include agitating the mixture and determining a viscosity of the mixture. The method can further include adding a second amount of the diamine. The last steps can be repeated until the viscosity increases to a target value. The target viscosity can be correlated to a peak weight-averaged molecular weight of the polyimide.