METHOD FOR PURIFYING METHACRYLIC ACID

METHOD FOR PURIFYING METHACRYLIC ACID

Provided is a crystallization method by which a highly-pure methacrylic acid crystal can be produced with high productivity. The method for purifying methacrylic acid according to the present disclosure involves using crude methacrylic acid having a maleic acid concentration of 2000 ppm by mass or l...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SONOBE, HIDEYUKI, KATO, SHINPEI, HOSHINO, MANABU, HINO, TOMOMICHI
Format: Patent
Sprache:eng
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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 SONOBE, HIDEYUKI
KATO, SHINPEI
HOSHINO, MANABU
HINO, TOMOMICHI
description Provided is a crystallization method by which a highly-pure methacrylic acid crystal can be produced with high productivity. The method for purifying methacrylic acid according to the present disclosure involves using crude methacrylic acid having a maleic acid concentration of 2000 ppm by mass or less and an acrylic acid concentration of 2000 ppm by mass or less and setting the slurry temperature to −10 to 10° C. in order to crystallize methacrylic acid. A suspension-type jacket-cooling-system crystallization vessel is used as the crystallization apparatus, and an absolute value of the difference between a crystallization temperature and a temperature of a cooling medium in the jacket is preferably 15° C. or less.
format Patent
fullrecord <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_SG11201403383YA</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>SG11201403383YA</sourcerecordid><originalsourceid>FETCH-epo_espacenet_SG11201403383YA3</originalsourceid><addsrcrecordid>eNrjZFD1dQ3x8HdRcPMPUggIDfJ0i_T0c1cACTo6B0X6eDorODp7uvAwsKYl5hSn8kJpbgYVN9cQZw_d1IL8-NTigsTk1LzUkvhgd0NDIwNDEwNjYwvjSEdjIpUBAHHDJLU</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>METHOD FOR PURIFYING METHACRYLIC ACID</title><source>esp@cenet</source><creator>SONOBE, HIDEYUKI ; KATO, SHINPEI ; HOSHINO, MANABU ; HINO, TOMOMICHI</creator><creatorcontrib>SONOBE, HIDEYUKI ; KATO, SHINPEI ; HOSHINO, MANABU ; HINO, TOMOMICHI</creatorcontrib><description>Provided is a crystallization method by which a highly-pure methacrylic acid crystal can be produced with high productivity. The method for purifying methacrylic acid according to the present disclosure involves using crude methacrylic acid having a maleic acid concentration of 2000 ppm by mass or less and an acrylic acid concentration of 2000 ppm by mass or less and setting the slurry temperature to −10 to 10° C. in order to crystallize methacrylic acid. A suspension-type jacket-cooling-system crystallization vessel is used as the crystallization apparatus, and an absolute value of the difference between a crystallization temperature and a temperature of a cooling medium in the jacket is preferably 15° C. or less.</description><language>eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; APPARATUS THEREFOR ; CHEMISTRY ; GENERAL METHODS OF ORGANIC CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>2014</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&amp;date=20140828&amp;DB=EPODOC&amp;CC=SG&amp;NR=11201403383YA$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20140828&amp;DB=EPODOC&amp;CC=SG&amp;NR=11201403383YA$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SONOBE, HIDEYUKI</creatorcontrib><creatorcontrib>KATO, SHINPEI</creatorcontrib><creatorcontrib>HOSHINO, MANABU</creatorcontrib><creatorcontrib>HINO, TOMOMICHI</creatorcontrib><title>METHOD FOR PURIFYING METHACRYLIC ACID</title><description>Provided is a crystallization method by which a highly-pure methacrylic acid crystal can be produced with high productivity. The method for purifying methacrylic acid according to the present disclosure involves using crude methacrylic acid having a maleic acid concentration of 2000 ppm by mass or less and an acrylic acid concentration of 2000 ppm by mass or less and setting the slurry temperature to −10 to 10° C. in order to crystallize methacrylic acid. A suspension-type jacket-cooling-system crystallization vessel is used as the crystallization apparatus, and an absolute value of the difference between a crystallization temperature and a temperature of a cooling medium in the jacket is preferably 15° C. or less.</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>APPARATUS THEREFOR</subject><subject>CHEMISTRY</subject><subject>GENERAL METHODS OF ORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFD1dQ3x8HdRcPMPUggIDfJ0i_T0c1cACTo6B0X6eDorODp7uvAwsKYl5hSn8kJpbgYVN9cQZw_d1IL8-NTigsTk1LzUkvhgd0NDIwNDEwNjYwvjSEdjIpUBAHHDJLU</recordid><startdate>20140828</startdate><enddate>20140828</enddate><creator>SONOBE, HIDEYUKI</creator><creator>KATO, SHINPEI</creator><creator>HOSHINO, MANABU</creator><creator>HINO, TOMOMICHI</creator><scope>EVB</scope></search><sort><creationdate>20140828</creationdate><title>METHOD FOR PURIFYING METHACRYLIC ACID</title><author>SONOBE, HIDEYUKI ; KATO, SHINPEI ; HOSHINO, MANABU ; HINO, TOMOMICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_SG11201403383YA3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2014</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>APPARATUS THEREFOR</topic><topic>CHEMISTRY</topic><topic>GENERAL METHODS OF ORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>SONOBE, HIDEYUKI</creatorcontrib><creatorcontrib>KATO, SHINPEI</creatorcontrib><creatorcontrib>HOSHINO, MANABU</creatorcontrib><creatorcontrib>HINO, TOMOMICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SONOBE, HIDEYUKI</au><au>KATO, SHINPEI</au><au>HOSHINO, MANABU</au><au>HINO, TOMOMICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR PURIFYING METHACRYLIC ACID</title><date>2014-08-28</date><risdate>2014</risdate><abstract>Provided is a crystallization method by which a highly-pure methacrylic acid crystal can be produced with high productivity. The method for purifying methacrylic acid according to the present disclosure involves using crude methacrylic acid having a maleic acid concentration of 2000 ppm by mass or less and an acrylic acid concentration of 2000 ppm by mass or less and setting the slurry temperature to −10 to 10° C. in order to crystallize methacrylic acid. A suspension-type jacket-cooling-system crystallization vessel is used as the crystallization apparatus, and an absolute value of the difference between a crystallization temperature and a temperature of a cooling medium in the jacket is preferably 15° C. or less.</abstract><oa>free_for_read</oa></addata></record>
fulltext fulltext_linktorsrc
identifier
ispartof
issn
language eng
recordid cdi_epo_espacenet_SG11201403383YA
source esp@cenet
subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title METHOD FOR PURIFYING METHACRYLIC ACID
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-24T15%3A35%3A12IST&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=SONOBE,%20HIDEYUKI&rft.date=2014-08-28&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3ESG11201403383YA%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