Efficient depolymerization and chemical conversion of polyamide 66 to 1,6-hexanediol
Polyamide 66 was efficiently depolymerized and chemically converted by treatment with supercritical MeOH in the presence of glycolic acid. The dicarboxylic acid unit of the polymer was selectively converted to dimethyl adipate, while the diamine unit of the polymer was converted to 1,6-hexane diol v...
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Veröffentlicht in: | Journal of material cycles and waste management 2017-01, Vol.19 (1), p.326-331 |
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creator | Matsumoto, Hiroshi Akinari, Yugo Kaiso, Kouji Kamimura, Akio |
description | Polyamide 66 was efficiently depolymerized and chemically converted by treatment with supercritical MeOH in the presence of glycolic acid. The dicarboxylic acid unit of the polymer was selectively converted to dimethyl adipate, while the diamine unit of the polymer was converted to 1,6-hexane diol via a tetramethyldiamine intermediate. The reaction in the absence of glycolic acid was sluggish, and the yields of the diester and the diol were poor. Thus, glycolic acid efficiently catalyzed the reaction to produce 1,6-hexanediol in high yield. |
doi_str_mv | 10.1007/s10163-015-0425-4 |
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The dicarboxylic acid unit of the polymer was selectively converted to dimethyl adipate, while the diamine unit of the polymer was converted to 1,6-hexane diol via a tetramethyldiamine intermediate. The reaction in the absence of glycolic acid was sluggish, and the yields of the diester and the diol were poor. Thus, glycolic acid efficiently catalyzed the reaction to produce 1,6-hexanediol in high yield.</description><identifier>ISSN: 1438-4957</identifier><identifier>EISSN: 1611-8227</identifier><identifier>DOI: 10.1007/s10163-015-0425-4</identifier><language>eng</language><publisher>Tokyo: Springer Japan</publisher><subject>Acids ; Chemicals ; Chromatography ; Civil Engineering ; Conversion ; Depolymerization ; Diamines ; Dicarboxylic acids ; Dimethyl ; Diols ; Engineering ; Environmental Management ; Fluids ; Glycolic acid ; Plastics ; Polyamide resins ; Polyamides ; Polymers ; Recycling ; Special Feature: Original Article ; Statistical analysis ; Waste Management/Waste Technology</subject><ispartof>Journal of material cycles and waste management, 2017-01, Vol.19 (1), p.326-331</ispartof><rights>Springer Japan 2015</rights><rights>Journal of Material Cycles and Waste Management is a copyright of Springer, 2017.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c485t-4a27fa089a1a1a1f7af901f9656ae06b4f92dffa7f311b62956c3fa3181f7f773</citedby><cites>FETCH-LOGICAL-c485t-4a27fa089a1a1a1f7af901f9656ae06b4f92dffa7f311b62956c3fa3181f7f773</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10163-015-0425-4$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10163-015-0425-4$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Matsumoto, Hiroshi</creatorcontrib><creatorcontrib>Akinari, Yugo</creatorcontrib><creatorcontrib>Kaiso, Kouji</creatorcontrib><creatorcontrib>Kamimura, Akio</creatorcontrib><title>Efficient depolymerization and chemical conversion of polyamide 66 to 1,6-hexanediol</title><title>Journal of material cycles and waste management</title><addtitle>J Mater Cycles Waste Manag</addtitle><description>Polyamide 66 was efficiently depolymerized and chemically converted by treatment with supercritical MeOH in the presence of glycolic acid. 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The dicarboxylic acid unit of the polymer was selectively converted to dimethyl adipate, while the diamine unit of the polymer was converted to 1,6-hexane diol via a tetramethyldiamine intermediate. The reaction in the absence of glycolic acid was sluggish, and the yields of the diester and the diol were poor. Thus, glycolic acid efficiently catalyzed the reaction to produce 1,6-hexanediol in high yield.</abstract><cop>Tokyo</cop><pub>Springer Japan</pub><doi>10.1007/s10163-015-0425-4</doi><tpages>6</tpages></addata></record> |
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subjects | Acids Chemicals Chromatography Civil Engineering Conversion Depolymerization Diamines Dicarboxylic acids Dimethyl Diols Engineering Environmental Management Fluids Glycolic acid Plastics Polyamide resins Polyamides Polymers Recycling Special Feature: Original Article Statistical analysis Waste Management/Waste Technology |
title | Efficient depolymerization and chemical conversion of polyamide 66 to 1,6-hexanediol |
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