A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL
The method for preparing 1,2-propanediol comprises the steps (a) reacting propene with hydrogen peroxide in the presence of a phase transfer catalyst and a heteropolytungstate in a liquid reaction mixture comprising an aqueous phase with a maximum apparent pH of 6 and an organic phase comprising a s...
Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; hun |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | IMM, Sebastian THIELE, Georg Friedrich WIEDERHOLD, Holger LAZAR, Marina BOLZ, David JAEGER, Bernd KOEHLE, Hans-Juergen |
| description | The method for preparing 1,2-propanediol comprises the steps (a) reacting propene with hydrogen peroxide in the presence of a phase transfer catalyst and a heteropolytungstate in a liquid reaction mixture comprising an aqueous phase with a maximum apparent pH of 6 and an organic phase comprising a solvent having a solubility in water at 20 °C of less than 500 mg/kg; (b) separating the liquid reaction mixture of step a) into an aqueous phase comprising 1,2-propanediol and an organic phase; (c) recycling at least a part of the separated organic phase to step a); (d) extracting the separated aqueous phase with an extractant solution comprising the same phase transfer catalyst and solvent as used in step a) to provide an extracted aqueous phase and an extract phase; (e) recycling at least a part of the extract phase to step a); and (f) recovering 1,2-propanediol from the extracted aqueous phase. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_HUE061260TT2</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>HUE061260TT2</sourcerecordid><originalsourceid>FETCH-epo_espacenet_HUE061260TT23</originalsourceid><addsrcrecordid>eNrjZNB3VPB1DfHwd1Fw8w9SCPFwVQgIcg1wDHIM8fT3U_B3UzDUMdINCPIPcPRzdfH09-FhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfEeoa4GZoZGZgYhIUbGxKgBANWrJgU</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL</title><source>esp@cenet</source><creator>IMM, Sebastian ; THIELE, Georg Friedrich ; WIEDERHOLD, Holger ; LAZAR, Marina ; BOLZ, David ; JAEGER, Bernd ; KOEHLE, Hans-Juergen</creator><creatorcontrib>IMM, Sebastian ; THIELE, Georg Friedrich ; WIEDERHOLD, Holger ; LAZAR, Marina ; BOLZ, David ; JAEGER, Bernd ; KOEHLE, Hans-Juergen</creatorcontrib><description>The method for preparing 1,2-propanediol comprises the steps (a) reacting propene with hydrogen peroxide in the presence of a phase transfer catalyst and a heteropolytungstate in a liquid reaction mixture comprising an aqueous phase with a maximum apparent pH of 6 and an organic phase comprising a solvent having a solubility in water at 20 °C of less than 500 mg/kg; (b) separating the liquid reaction mixture of step a) into an aqueous phase comprising 1,2-propanediol and an organic phase; (c) recycling at least a part of the separated organic phase to step a); (d) extracting the separated aqueous phase with an extractant solution comprising the same phase transfer catalyst and solvent as used in step a) to provide an extracted aqueous phase and an extract phase; (e) recycling at least a part of the extract phase to step a); and (f) recovering 1,2-propanediol from the extracted aqueous phase.</description><language>eng ; hun</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ; CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; THEIR RELEVANT APPARATUS ; TRANSPORTING</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230528&DB=EPODOC&CC=HU&NR=E061260T2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25566,76549</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20230528&DB=EPODOC&CC=HU&NR=E061260T2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>IMM, Sebastian</creatorcontrib><creatorcontrib>THIELE, Georg Friedrich</creatorcontrib><creatorcontrib>WIEDERHOLD, Holger</creatorcontrib><creatorcontrib>LAZAR, Marina</creatorcontrib><creatorcontrib>BOLZ, David</creatorcontrib><creatorcontrib>JAEGER, Bernd</creatorcontrib><creatorcontrib>KOEHLE, Hans-Juergen</creatorcontrib><title>A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL</title><description>The method for preparing 1,2-propanediol comprises the steps (a) reacting propene with hydrogen peroxide in the presence of a phase transfer catalyst and a heteropolytungstate in a liquid reaction mixture comprising an aqueous phase with a maximum apparent pH of 6 and an organic phase comprising a solvent having a solubility in water at 20 °C of less than 500 mg/kg; (b) separating the liquid reaction mixture of step a) into an aqueous phase comprising 1,2-propanediol and an organic phase; (c) recycling at least a part of the separated organic phase to step a); (d) extracting the separated aqueous phase with an extractant solution comprising the same phase transfer catalyst and solvent as used in step a) to provide an extracted aqueous phase and an extract phase; (e) recycling at least a part of the extract phase to step a); and (f) recovering 1,2-propanediol from the extracted aqueous phase.</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNB3VPB1DfHwd1Fw8w9SCPFwVQgIcg1wDHIM8fT3U_B3UzDUMdINCPIPcPRzdfH09-FhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfEeoa4GZoZGZgYhIUbGxKgBANWrJgU</recordid><startdate>20230528</startdate><enddate>20230528</enddate><creator>IMM, Sebastian</creator><creator>THIELE, Georg Friedrich</creator><creator>WIEDERHOLD, Holger</creator><creator>LAZAR, Marina</creator><creator>BOLZ, David</creator><creator>JAEGER, Bernd</creator><creator>KOEHLE, Hans-Juergen</creator><scope>EVB</scope></search><sort><creationdate>20230528</creationdate><title>A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL</title><author>IMM, Sebastian ; THIELE, Georg Friedrich ; WIEDERHOLD, Holger ; LAZAR, Marina ; BOLZ, David ; JAEGER, Bernd ; KOEHLE, Hans-Juergen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_HUE061260TT23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; hun</language><creationdate>2023</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>IMM, Sebastian</creatorcontrib><creatorcontrib>THIELE, Georg Friedrich</creatorcontrib><creatorcontrib>WIEDERHOLD, Holger</creatorcontrib><creatorcontrib>LAZAR, Marina</creatorcontrib><creatorcontrib>BOLZ, David</creatorcontrib><creatorcontrib>JAEGER, Bernd</creatorcontrib><creatorcontrib>KOEHLE, Hans-Juergen</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>IMM, Sebastian</au><au>THIELE, Georg Friedrich</au><au>WIEDERHOLD, Holger</au><au>LAZAR, Marina</au><au>BOLZ, David</au><au>JAEGER, Bernd</au><au>KOEHLE, Hans-Juergen</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL</title><date>2023-05-28</date><risdate>2023</risdate><abstract>The method for preparing 1,2-propanediol comprises the steps (a) reacting propene with hydrogen peroxide in the presence of a phase transfer catalyst and a heteropolytungstate in a liquid reaction mixture comprising an aqueous phase with a maximum apparent pH of 6 and an organic phase comprising a solvent having a solubility in water at 20 °C of less than 500 mg/kg; (b) separating the liquid reaction mixture of step a) into an aqueous phase comprising 1,2-propanediol and an organic phase; (c) recycling at least a part of the separated organic phase to step a); (d) extracting the separated aqueous phase with an extractant solution comprising the same phase transfer catalyst and solvent as used in step a) to provide an extracted aqueous phase and an extract phase; (e) recycling at least a part of the extract phase to step a); and (f) recovering 1,2-propanediol from the extracted aqueous phase.</abstract><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng ; hun |
| recordid | cdi_epo_espacenet_HUE061260TT2 |
| source | esp@cenet |
| subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING |
| title | A METHOD FOR THE PREPARATION OF 1,2-PROPANEDIOL |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-17T14%3A56%3A54IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=IMM,%20Sebastian&rft.date=2023-05-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EHUE061260TT2%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |