Distillation of Styrene
PURPOSE: A method for distilling a vinyl aromatic monomer is provided, which is suitable for destabilizing and purifying the styrene stabilized with 4-t-butylcatechol for transportation. CONSTITUTION: The method comprises the step of distilling a vinyl aromatic monomer in the presence of 4-t-butylca...
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| creator | METZGER WERNER GEORG SCHMAUS PAULUS |
| description | PURPOSE: A method for distilling a vinyl aromatic monomer is provided, which is suitable for destabilizing and purifying the styrene stabilized with 4-t-butylcatechol for transportation. CONSTITUTION: The method comprises the step of distilling a vinyl aromatic monomer in the presence of 4-t-butylcatechol and oxygen containing no aromatic nitro or amino compound. The vinyl aromatic monomer is preferably styrene. 4-t-Butylcatechol is fed into a distillation apparatus together with a vinyl aromatic monomer, and the concentration of 4-t-butylcatechol is 200-15,000 ppm at the bottom part of the distillation apparatus based on the concentration of the vinyl aromatic monomer. The vacuum distillation is carried out at a temperature of 40-125 deg.C. A gas containing oxygen is fed by a circulation pump equipped at the suction side upstream of a distillation assembly. The content of oxygen fed is 0.01-0.5 wt.% based on the weight of the vinyl aromatic monomer.
어떠한 방향족 니트로 또는 아미노 화합물도 임의의 유효량으로 존재하지 않는, 4-t-부틸카테콜(TBC) 및 산소의 존재하에 비닐방향족 단량체의 증류방법. 상기 방법은 특히 운송을 위해 4-t-부틸카테콜(TBC)로 안정화된 스티렌을 탈안정화 및 정제하기에 적합하다. |
| format | Patent |
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어떠한 방향족 니트로 또는 아미노 화합물도 임의의 유효량으로 존재하지 않는, 4-t-부틸카테콜(TBC) 및 산소의 존재하에 비닐방향족 단량체의 증류방법. 상기 방법은 특히 운송을 위해 4-t-부틸카테콜(TBC)로 안정화된 스티렌을 탈안정화 및 정제하기에 적합하다.</description><edition>7</edition><language>eng ; kor</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>2002</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=20020215&DB=EPODOC&CC=KR&NR=20020012147A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20020215&DB=EPODOC&CC=KR&NR=20020012147A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>METZGER WERNER GEORG</creatorcontrib><creatorcontrib>SCHMAUS PAULUS</creatorcontrib><title>Distillation of Styrene</title><description>PURPOSE: A method for distilling a vinyl aromatic monomer is provided, which is suitable for destabilizing and purifying the styrene stabilized with 4-t-butylcatechol for transportation. CONSTITUTION: The method comprises the step of distilling a vinyl aromatic monomer in the presence of 4-t-butylcatechol and oxygen containing no aromatic nitro or amino compound. The vinyl aromatic monomer is preferably styrene. 4-t-Butylcatechol is fed into a distillation apparatus together with a vinyl aromatic monomer, and the concentration of 4-t-butylcatechol is 200-15,000 ppm at the bottom part of the distillation apparatus based on the concentration of the vinyl aromatic monomer. The vacuum distillation is carried out at a temperature of 40-125 deg.C. A gas containing oxygen is fed by a circulation pump equipped at the suction side upstream of a distillation assembly. The content of oxygen fed is 0.01-0.5 wt.% based on the weight of the vinyl aromatic monomer.
어떠한 방향족 니트로 또는 아미노 화합물도 임의의 유효량으로 존재하지 않는, 4-t-부틸카테콜(TBC) 및 산소의 존재하에 비닐방향족 단량체의 증류방법. 상기 방법은 특히 운송을 위해 4-t-부틸카테콜(TBC)로 안정화된 스티렌을 탈안정화 및 정제하기에 적합하다.</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBB3ySwuyczJSSzJzM9TyE9TCC6pLErNS-VhYE1LzClO5YXS3AzKbq4hzh66qQX58anFBYnJQEUl8d5BRgYGQGRoZGhi7mhMnCoAUlkirw</recordid><startdate>20020215</startdate><enddate>20020215</enddate><creator>METZGER WERNER GEORG</creator><creator>SCHMAUS PAULUS</creator><scope>EVB</scope></search><sort><creationdate>20020215</creationdate><title>Distillation of Styrene</title><author>METZGER WERNER GEORG ; SCHMAUS PAULUS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_KR20020012147A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; kor</language><creationdate>2002</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>METZGER WERNER GEORG</creatorcontrib><creatorcontrib>SCHMAUS PAULUS</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>METZGER WERNER GEORG</au><au>SCHMAUS PAULUS</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Distillation of Styrene</title><date>2002-02-15</date><risdate>2002</risdate><abstract>PURPOSE: A method for distilling a vinyl aromatic monomer is provided, which is suitable for destabilizing and purifying the styrene stabilized with 4-t-butylcatechol for transportation. CONSTITUTION: The method comprises the step of distilling a vinyl aromatic monomer in the presence of 4-t-butylcatechol and oxygen containing no aromatic nitro or amino compound. The vinyl aromatic monomer is preferably styrene. 4-t-Butylcatechol is fed into a distillation apparatus together with a vinyl aromatic monomer, and the concentration of 4-t-butylcatechol is 200-15,000 ppm at the bottom part of the distillation apparatus based on the concentration of the vinyl aromatic monomer. The vacuum distillation is carried out at a temperature of 40-125 deg.C. A gas containing oxygen is fed by a circulation pump equipped at the suction side upstream of a distillation assembly. The content of oxygen fed is 0.01-0.5 wt.% based on the weight of the vinyl aromatic monomer.
어떠한 방향족 니트로 또는 아미노 화합물도 임의의 유효량으로 존재하지 않는, 4-t-부틸카테콜(TBC) 및 산소의 존재하에 비닐방향족 단량체의 증류방법. 상기 방법은 특히 운송을 위해 4-t-부틸카테콜(TBC)로 안정화된 스티렌을 탈안정화 및 정제하기에 적합하다.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| title | Distillation of Styrene |
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