Preparation method of electronic grade propylene glycol monomethyl ether and product obtained by preparation method
The invention discloses a preparation method of electronic grade propylene glycol monomethyl ether and a product obtained by the preparation method, and belongs to the technical field of preparation of fine chemicals. The method comprises the following steps of: 1) mixing methanol, propylene oxide a...
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| creator | ZHANG ZAIZHONG LI RONG ZHANG YONG WEI JUAN MA JUNQING |
| description | The invention discloses a preparation method of electronic grade propylene glycol monomethyl ether and a product obtained by the preparation method, and belongs to the technical field of preparation of fine chemicals. The method comprises the following steps of: 1) mixing methanol, propylene oxide and a basic ionic liquid catalyst, and carrying out reaction in a micro-channel reactor to obtain a reaction solution; 2) removing light components from the reaction solution to obtain a light component removed reaction solution; and 3) evaporating the light component removed reaction solution obtained in step 2), and performing negative pressure rectification on the obtained steam to obtain the electronic grade propylene glycol monomethyl ether. The preparation method of the electronic grade propylene glycol monomethyl ether provided by the invention are mild in reaction conditions, the purity of the prepared product is high, the yield is high, and the activity and selectivity of the catalyst are high.
本发明公开了电子级丙二醇 |
| format | Patent |
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本发明公开了电子级丙二醇</description><language>chi ; eng</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>2020</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=20201023&DB=EPODOC&CC=CN&NR=111807934A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201023&DB=EPODOC&CC=CN&NR=111807934A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHANG ZAIZHONG</creatorcontrib><creatorcontrib>LI RONG</creatorcontrib><creatorcontrib>ZHANG YONG</creatorcontrib><creatorcontrib>WEI JUAN</creatorcontrib><creatorcontrib>MA JUNQING</creatorcontrib><title>Preparation method of electronic grade propylene glycol monomethyl ether and product obtained by preparation method</title><description>The invention discloses a preparation method of electronic grade propylene glycol monomethyl ether and a product obtained by the preparation method, and belongs to the technical field of preparation of fine chemicals. The method comprises the following steps of: 1) mixing methanol, propylene oxide and a basic ionic liquid catalyst, and carrying out reaction in a micro-channel reactor to obtain a reaction solution; 2) removing light components from the reaction solution to obtain a light component removed reaction solution; and 3) evaporating the light component removed reaction solution obtained in step 2), and performing negative pressure rectification on the obtained steam to obtain the electronic grade propylene glycol monomethyl ether. The preparation method of the electronic grade propylene glycol monomethyl ether provided by the invention are mild in reaction conditions, the purity of the prepared product is high, the yield is high, and the activity and selectivity of the catalyst are high.
本发明公开了电子级丙二醇</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>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNjbEKwjAURbs4iPoPzw8QDBXUUYriJA7u5TV5bQNpXkieQ_7eFJycXO6By4GzrNIzUsCIYtnDRDKyAe6BHGmJ7K2GIaIhCJFDduQJBpc1O5jY8-xnB2UpAnozW-atBbgTtJ4MdLl8v4F1tejRJdp8uaq2t-urue8ocEspoC4daZuHUuq0P57rw6X-x_kAxqpFaw</recordid><startdate>20201023</startdate><enddate>20201023</enddate><creator>ZHANG ZAIZHONG</creator><creator>LI RONG</creator><creator>ZHANG YONG</creator><creator>WEI JUAN</creator><creator>MA JUNQING</creator><scope>EVB</scope></search><sort><creationdate>20201023</creationdate><title>Preparation method of electronic grade propylene glycol monomethyl ether and product obtained by preparation method</title><author>ZHANG ZAIZHONG ; LI RONG ; ZHANG YONG ; WEI JUAN ; MA JUNQING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN111807934A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2020</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>ZHANG ZAIZHONG</creatorcontrib><creatorcontrib>LI RONG</creatorcontrib><creatorcontrib>ZHANG YONG</creatorcontrib><creatorcontrib>WEI JUAN</creatorcontrib><creatorcontrib>MA JUNQING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHANG ZAIZHONG</au><au>LI RONG</au><au>ZHANG YONG</au><au>WEI JUAN</au><au>MA JUNQING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Preparation method of electronic grade propylene glycol monomethyl ether and product obtained by preparation method</title><date>2020-10-23</date><risdate>2020</risdate><abstract>The invention discloses a preparation method of electronic grade propylene glycol monomethyl ether and a product obtained by the preparation method, and belongs to the technical field of preparation of fine chemicals. The method comprises the following steps of: 1) mixing methanol, propylene oxide and a basic ionic liquid catalyst, and carrying out reaction in a micro-channel reactor to obtain a reaction solution; 2) removing light components from the reaction solution to obtain a light component removed reaction solution; and 3) evaporating the light component removed reaction solution obtained in step 2), and performing negative pressure rectification on the obtained steam to obtain the electronic grade propylene glycol monomethyl ether. The preparation method of the electronic grade propylene glycol monomethyl ether provided by the invention are mild in reaction conditions, the purity of the prepared product is high, the yield is high, and the activity and selectivity of the catalyst are high.
本发明公开了电子级丙二醇</abstract><oa>free_for_read</oa></addata></record> |
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| 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 | Preparation method of electronic grade propylene glycol monomethyl ether and product obtained by preparation method |
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