Method for the production of polycarbonates
A method for the manufacture of a polycarbonate which comprises reacting a carbonate precursor with a dihydroxy compound in the presence of an aqueous base in an inert organic solvent optionally containing a molecular weight regulator to form an oligomeric polycarbonate, wherein the reaction between...
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| 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 | SCHIPPER EUGENE THEODORUS WILHELMUS MARIA ZIRKZEE HENDRICUS FRANCISCUS PEEMANS RUDY FRANCOIS ALAIN JOS KAMPS JAN HENK |
| description | A method for the manufacture of a polycarbonate which comprises reacting a carbonate precursor with a dihydroxy compound in the presence of an aqueous base in an inert organic solvent optionally containing a molecular weight regulator to form an oligomeric polycarbonate, wherein the reaction between the dihydroxy compound and the carbonate precursor is about 80 to about 99% completed; removing the inert organic solvent and the aqueous base to isolate the oligomeric polycarbonate; and transesterifying the isolated oligomeric polycarbonate to form a polymeric polycarbonate at a temperature and pressure effective to remove trace amounts of residual solvent. This method eliminates some of the problems of the prior art such as the removal of solvent from high molecular weight polycarbonate, which is both cumbersome, energy intensive and expensive. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US7122613B1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US7122613B1</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US7122613B13</originalsourceid><addsrcrecordid>eNrjZND2TS3JyE9RSMsvUijJSFUoKMpPKU0uyczPU8hPUyjIz6lMTixKys9LLEkt5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8aHB5oZGRmaGxk6GxkQoAQAmHSlZ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Method for the production of polycarbonates</title><source>esp@cenet</source><creator>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA ; ZIRKZEE HENDRICUS FRANCISCUS ; PEEMANS RUDY FRANCOIS ALAIN JOS ; KAMPS JAN HENK</creator><creatorcontrib>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA ; ZIRKZEE HENDRICUS FRANCISCUS ; PEEMANS RUDY FRANCOIS ALAIN JOS ; KAMPS JAN HENK</creatorcontrib><description>A method for the manufacture of a polycarbonate which comprises reacting a carbonate precursor with a dihydroxy compound in the presence of an aqueous base in an inert organic solvent optionally containing a molecular weight regulator to form an oligomeric polycarbonate, wherein the reaction between the dihydroxy compound and the carbonate precursor is about 80 to about 99% completed; removing the inert organic solvent and the aqueous base to isolate the oligomeric polycarbonate; and transesterifying the isolated oligomeric polycarbonate to form a polymeric polycarbonate at a temperature and pressure effective to remove trace amounts of residual solvent. This method eliminates some of the problems of the prior art such as the removal of solvent from high molecular weight polycarbonate, which is both cumbersome, energy intensive and expensive.</description><language>eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><creationdate>2006</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=20061017&DB=EPODOC&CC=US&NR=7122613B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76419</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20061017&DB=EPODOC&CC=US&NR=7122613B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA</creatorcontrib><creatorcontrib>ZIRKZEE HENDRICUS FRANCISCUS</creatorcontrib><creatorcontrib>PEEMANS RUDY FRANCOIS ALAIN JOS</creatorcontrib><creatorcontrib>KAMPS JAN HENK</creatorcontrib><title>Method for the production of polycarbonates</title><description>A method for the manufacture of a polycarbonate which comprises reacting a carbonate precursor with a dihydroxy compound in the presence of an aqueous base in an inert organic solvent optionally containing a molecular weight regulator to form an oligomeric polycarbonate, wherein the reaction between the dihydroxy compound and the carbonate precursor is about 80 to about 99% completed; removing the inert organic solvent and the aqueous base to isolate the oligomeric polycarbonate; and transesterifying the isolated oligomeric polycarbonate to form a polymeric polycarbonate at a temperature and pressure effective to remove trace amounts of residual solvent. This method eliminates some of the problems of the prior art such as the removal of solvent from high molecular weight polycarbonate, which is both cumbersome, energy intensive and expensive.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND2TS3JyE9RSMsvUijJSFUoKMpPKU0uyczPU8hPUyjIz6lMTixKys9LLEkt5mFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8aHB5oZGRmaGxk6GxkQoAQAmHSlZ</recordid><startdate>20061017</startdate><enddate>20061017</enddate><creator>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA</creator><creator>ZIRKZEE HENDRICUS FRANCISCUS</creator><creator>PEEMANS RUDY FRANCOIS ALAIN JOS</creator><creator>KAMPS JAN HENK</creator><scope>EVB</scope></search><sort><creationdate>20061017</creationdate><title>Method for the production of polycarbonates</title><author>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA ; ZIRKZEE HENDRICUS FRANCISCUS ; PEEMANS RUDY FRANCOIS ALAIN JOS ; KAMPS JAN HENK</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US7122613B13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2006</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA</creatorcontrib><creatorcontrib>ZIRKZEE HENDRICUS FRANCISCUS</creatorcontrib><creatorcontrib>PEEMANS RUDY FRANCOIS ALAIN JOS</creatorcontrib><creatorcontrib>KAMPS JAN HENK</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SCHIPPER EUGENE THEODORUS WILHELMUS MARIA</au><au>ZIRKZEE HENDRICUS FRANCISCUS</au><au>PEEMANS RUDY FRANCOIS ALAIN JOS</au><au>KAMPS JAN HENK</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for the production of polycarbonates</title><date>2006-10-17</date><risdate>2006</risdate><abstract>A method for the manufacture of a polycarbonate which comprises reacting a carbonate precursor with a dihydroxy compound in the presence of an aqueous base in an inert organic solvent optionally containing a molecular weight regulator to form an oligomeric polycarbonate, wherein the reaction between the dihydroxy compound and the carbonate precursor is about 80 to about 99% completed; removing the inert organic solvent and the aqueous base to isolate the oligomeric polycarbonate; and transesterifying the isolated oligomeric polycarbonate to form a polymeric polycarbonate at a temperature and pressure effective to remove trace amounts of residual solvent. This method eliminates some of the problems of the prior art such as the removal of solvent from high molecular weight polycarbonate, which is both cumbersome, energy intensive and expensive.</abstract><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_epo_espacenet_US7122613B1 |
| source | esp@cenet |
| subjects | CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | Method for the production of polycarbonates |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-08T02%3A43%3A25IST&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=SCHIPPER%20EUGENE%20THEODORUS%20WILHELMUS%20MARIA&rft.date=2006-10-17&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EUS7122613B1%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 |