Method for producing aqueous polyester resin, aqueous polyester resin, and aqueous coating composition
The method for producing an aqueous polyester resin includes a first step and a second step. The first step includes inducing an ester formation reaction and a depolymerization reaction using the recycled polyester, a polycarboxylic acid component comprising polycarboxylic acid residues and not comp...
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| creator | SAKAKIBARA TERU KOMABIKI SHINYA |
| description | The method for producing an aqueous polyester resin includes a first step and a second step. The first step includes inducing an ester formation reaction and a depolymerization reaction using the recycled polyester, a polycarboxylic acid component comprising polycarboxylic acid residues and not comprising terephthalic acid, and a polyol component. The second step includes causing a polycondensation reaction by reducing the pressure. The first step includes: using the recycled polyester in an amount such that the proportion of terephthalic acid residues is equal to or greater than 20 mass% and equal to or less than 72 mass%; and using a metal sulfonate group-containing polycarboxylic acid compound in an amount such that the proportion of metal sulfonate group-containing polycarboxylic acid residues is equal to or greater than 5 mass% and equal to or less than 32 mass%. The resin thus produced has an acid number equal to or less than 10 mgKOH/g.
用于生产水系聚酯树脂的方法包括第一步骤和第二步骤。第一步骤包括使用再生聚酯、包含多元羧酸残基并且不包含对苯二甲酸的多元羧酸组分、以及 |
| format | Patent |
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用于生产水系聚酯树脂的方法包括第一步骤和第二步骤。第一步骤包括使用再生聚酯、包含多元羧酸残基并且不包含对苯二甲酸的多元羧酸组分、以及</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><creationdate>2023</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=20231124&DB=EPODOC&CC=CN&NR=117120506A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20231124&DB=EPODOC&CC=CN&NR=117120506A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SAKAKIBARA TERU</creatorcontrib><creatorcontrib>KOMABIKI SHINYA</creatorcontrib><title>Method for producing aqueous polyester resin, aqueous polyester resin, and aqueous coating composition</title><description>The method for producing an aqueous polyester resin includes a first step and a second step. The first step includes inducing an ester formation reaction and a depolymerization reaction using the recycled polyester, a polycarboxylic acid component comprising polycarboxylic acid residues and not comprising terephthalic acid, and a polyol component. The second step includes causing a polycondensation reaction by reducing the pressure. The first step includes: using the recycled polyester in an amount such that the proportion of terephthalic acid residues is equal to or greater than 20 mass% and equal to or less than 72 mass%; and using a metal sulfonate group-containing polycarboxylic acid compound in an amount such that the proportion of metal sulfonate group-containing polycarboxylic acid residues is equal to or greater than 5 mass% and equal to or less than 32 mass%. The resin thus produced has an acid number equal to or less than 10 mgKOH/g.
用于生产水系聚酯树脂的方法包括第一步骤和第二步骤。第一步骤包括使用再生聚酯、包含多元羧酸残基并且不包含对苯二甲酸的多元羧酸组分、以及</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2023</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZEjzTS3JyE9RSMsvUigoyk8pTc7MS1dILCxNzS8tVijIz6lMLS5JLVIoSi3OzNPBI5GXApdMzk8sAZmSnJ9bkF-cWZKZn8fDwJqWmFOcyguluRkU3VxDnD10Uwvy41OLCxKTU_NSS-Kd_QwNzQ2NDEwNzByNiVEDAOWtQGs</recordid><startdate>20231124</startdate><enddate>20231124</enddate><creator>SAKAKIBARA TERU</creator><creator>KOMABIKI SHINYA</creator><scope>EVB</scope></search><sort><creationdate>20231124</creationdate><title>Method for producing aqueous polyester resin, aqueous polyester resin, and aqueous coating composition</title><author>SAKAKIBARA TERU ; KOMABIKI SHINYA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN117120506A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2023</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>SAKAKIBARA TERU</creatorcontrib><creatorcontrib>KOMABIKI SHINYA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SAKAKIBARA TERU</au><au>KOMABIKI SHINYA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for producing aqueous polyester resin, aqueous polyester resin, and aqueous coating composition</title><date>2023-11-24</date><risdate>2023</risdate><abstract>The method for producing an aqueous polyester resin includes a first step and a second step. The first step includes inducing an ester formation reaction and a depolymerization reaction using the recycled polyester, a polycarboxylic acid component comprising polycarboxylic acid residues and not comprising terephthalic acid, and a polyol component. The second step includes causing a polycondensation reaction by reducing the pressure. The first step includes: using the recycled polyester in an amount such that the proportion of terephthalic acid residues is equal to or greater than 20 mass% and equal to or less than 72 mass%; and using a metal sulfonate group-containing polycarboxylic acid compound in an amount such that the proportion of metal sulfonate group-containing polycarboxylic acid residues is equal to or greater than 5 mass% and equal to or less than 32 mass%. The resin thus produced has an acid number equal to or less than 10 mgKOH/g.
用于生产水系聚酯树脂的方法包括第一步骤和第二步骤。第一步骤包括使用再生聚酯、包含多元羧酸残基并且不包含对苯二甲酸的多元羧酸组分、以及</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | Method for producing aqueous polyester resin, aqueous polyester resin, and aqueous coating composition |
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