Post-treatment method for preparing naphthol AS-PH
The invention belongs to the technical field of chemical engineering, and particularly relates to a post-treatment method for preparing naphthol AS-PH, which comprises the following steps: removing asolvent from a reaction solution after synthesizing naphthol AS-PH, cooling, sequentially stirring an...
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| creator | YANG QINGXU LI HONGTAO TIAN DA WU DUNCHENG FENG WEICHUN WANG JIAXIN XING WENGUO |
| description | The invention belongs to the technical field of chemical engineering, and particularly relates to a post-treatment method for preparing naphthol AS-PH, which comprises the following steps: removing asolvent from a reaction solution after synthesizing naphthol AS-PH, cooling, sequentially stirring and washing with absolute ethyl alcohol, leaching, and drying to obtain refined naphthol AS-PH. According to the invention, traditional treatment methods such as alkali dissolution acidification and the like are abandoned; treatment process is simple, operability is strong, according to the post-treatment method, the technical problems of low product purity, high content of alkali insoluble substances, recycling of a catalyst and the like caused by recycling of naphthol AS-PH mother liquor in a traditional process are solved; the purity of the product can reach 99.5% or above, the content of alkali-insoluble substances is smaller than 0.08%, the content of the alkali-insoluble substances is greatly reduced, the color |
| format | Patent |
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According to the invention, traditional treatment methods such as alkali dissolution acidification and the like are abandoned; treatment process is simple, operability is strong, according to the post-treatment method, the technical problems of low product purity, high content of alkali insoluble substances, recycling of a catalyst and the like caused by recycling of naphthol AS-PH mother liquor in a traditional process are solved; the purity of the product can reach 99.5% or above, the content of alkali-insoluble substances is smaller than 0.08%, the content of the alkali-insoluble substances is greatly reduced, the color</description><language>chi ; eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY</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=20201016&DB=EPODOC&CC=CN&NR=111777524A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201016&DB=EPODOC&CC=CN&NR=111777524A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YANG QINGXU</creatorcontrib><creatorcontrib>LI HONGTAO</creatorcontrib><creatorcontrib>TIAN DA</creatorcontrib><creatorcontrib>WU DUNCHENG</creatorcontrib><creatorcontrib>FENG WEICHUN</creatorcontrib><creatorcontrib>WANG JIAXIN</creatorcontrib><creatorcontrib>XING WENGUO</creatorcontrib><title>Post-treatment method for preparing naphthol AS-PH</title><description>The invention belongs to the technical field of chemical engineering, and particularly relates to a post-treatment method for preparing naphthol AS-PH, which comprises the following steps: removing asolvent from a reaction solution after synthesizing naphthol AS-PH, cooling, sequentially stirring and washing with absolute ethyl alcohol, leaching, and drying to obtain refined naphthol AS-PH. According to the invention, traditional treatment methods such as alkali dissolution acidification and the like are abandoned; treatment process is simple, operability is strong, according to the post-treatment method, the technical problems of low product purity, high content of alkali insoluble substances, recycling of a catalyst and the like caused by recycling of naphthol AS-PH mother liquor in a traditional process are solved; the purity of the product can reach 99.5% or above, the content of alkali-insoluble substances is smaller than 0.08%, the content of the alkali-insoluble substances is greatly reduced, the color</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDAKyC8u0S0pSk0syU3NK1HITS3JyE9RSMsvUigoSi1ILMrMS1fISyzIAArnKDgG6wZ48DCwpiXmFKfyQmluBkU31xBnD93Ugvz41OKCxOTUvNSSeGc_Q0NDc3NzUyMTR2Ni1AAArxkrrQ</recordid><startdate>20201016</startdate><enddate>20201016</enddate><creator>YANG QINGXU</creator><creator>LI HONGTAO</creator><creator>TIAN DA</creator><creator>WU DUNCHENG</creator><creator>FENG WEICHUN</creator><creator>WANG JIAXIN</creator><creator>XING WENGUO</creator><scope>EVB</scope></search><sort><creationdate>20201016</creationdate><title>Post-treatment method for preparing naphthol AS-PH</title><author>YANG QINGXU ; LI HONGTAO ; TIAN DA ; WU DUNCHENG ; FENG WEICHUN ; WANG JIAXIN ; XING WENGUO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN111777524A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2020</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>YANG QINGXU</creatorcontrib><creatorcontrib>LI HONGTAO</creatorcontrib><creatorcontrib>TIAN DA</creatorcontrib><creatorcontrib>WU DUNCHENG</creatorcontrib><creatorcontrib>FENG WEICHUN</creatorcontrib><creatorcontrib>WANG JIAXIN</creatorcontrib><creatorcontrib>XING WENGUO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YANG QINGXU</au><au>LI HONGTAO</au><au>TIAN DA</au><au>WU DUNCHENG</au><au>FENG WEICHUN</au><au>WANG JIAXIN</au><au>XING WENGUO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Post-treatment method for preparing naphthol AS-PH</title><date>2020-10-16</date><risdate>2020</risdate><abstract>The invention belongs to the technical field of chemical engineering, and particularly relates to a post-treatment method for preparing naphthol AS-PH, which comprises the following steps: removing asolvent from a reaction solution after synthesizing naphthol AS-PH, cooling, sequentially stirring and washing with absolute ethyl alcohol, leaching, and drying to obtain refined naphthol AS-PH. According to the invention, traditional treatment methods such as alkali dissolution acidification and the like are abandoned; treatment process is simple, operability is strong, according to the post-treatment method, the technical problems of low product purity, high content of alkali insoluble substances, recycling of a catalyst and the like caused by recycling of naphthol AS-PH mother liquor in a traditional process are solved; the purity of the product can reach 99.5% or above, the content of alkali-insoluble substances is smaller than 0.08%, the content of the alkali-insoluble substances is greatly reduced, the color</abstract><oa>free_for_read</oa></addata></record> |
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| title | Post-treatment method for preparing naphthol AS-PH |
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