METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER
The present invention is to provide a process for producing an oxymethylene copolymer, in which deteriorate due to oxidation hardly occurs, an amount of formaldehyde generated from the product, in particular, an amount of formaldehyde generated from the product when stored for a long time under envi...
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| creator | YAMAMOTO, Yuuta SUNAGA, Daisuke THUAMTHONG, Wandee PATTAMAMONGKOLCHAI, Yupin ITO, Akira |
| description | The present invention is to provide a process for producing an oxymethylene copolymer, in which deteriorate due to oxidation hardly occurs, an amount of formaldehyde generated from the product, in particular, an amount of formaldehyde generated from the product when stored for a long time under environment of high temperature and high humidity is reduced, and occurrence of mold deposit during molding is small. More specifically, provided is a process for producing an oxymethylene copolymer which comprises
Step 1 of polymerizing polymer raw materials containing trioxane and a comonomer in the presence of a specific amount of an acid catalyst,
Step 2 of adding a hydroxylamine compound represented by the following general formula (1):
wherein R 1 and R 2 are as defined in the claims and the specification,
to a product obtained in the Step 1 in an amount of 1 to 20-fold mol based on an amount of the acid catalyst and mixing these, and
Step 3 of further melting and kneading a mixture of the product and the hydroxylamine compound obtained in the Step 2. |
| format | Patent |
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Step 1 of polymerizing polymer raw materials containing trioxane and a comonomer in the presence of a specific amount of an acid catalyst,
Step 2 of adding a hydroxylamine compound represented by the following general formula (1):
wherein R 1 and R 2 are as defined in the claims and the specification,
to a product obtained in the Step 1 in an amount of 1 to 20-fold mol based on an amount of the acid catalyst and mixing these, and
Step 3 of further melting and kneading a mixture of the product and the hydroxylamine compound obtained in the Step 2.</description><language>eng ; fre ; ger</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</subject><creationdate>2019</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=20191127&DB=EPODOC&CC=EP&NR=3431520A4$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20191127&DB=EPODOC&CC=EP&NR=3431520A4$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YAMAMOTO, Yuuta</creatorcontrib><creatorcontrib>SUNAGA, Daisuke</creatorcontrib><creatorcontrib>THUAMTHONG, Wandee</creatorcontrib><creatorcontrib>PATTAMAMONGKOLCHAI, Yupin</creatorcontrib><creatorcontrib>ITO, Akira</creatorcontrib><title>METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER</title><description>The present invention is to provide a process for producing an oxymethylene copolymer, in which deteriorate due to oxidation hardly occurs, an amount of formaldehyde generated from the product, in particular, an amount of formaldehyde generated from the product when stored for a long time under environment of high temperature and high humidity is reduced, and occurrence of mold deposit during molding is small. More specifically, provided is a process for producing an oxymethylene copolymer which comprises
Step 1 of polymerizing polymer raw materials containing trioxane and a comonomer in the presence of a specific amount of an acid catalyst,
Step 2 of adding a hydroxylamine compound represented by the following general formula (1):
wherein R 1 and R 2 are as defined in the claims and the specification,
to a product obtained in the Step 1 in an amount of 1 to 20-fold mol based on an amount of the acid catalyst and mixing these, and
Step 3 of further melting and kneading a mixture of the product and the hydroxylamine compound obtained in the Step 2.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</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><subject>USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2019</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZND2dQ3x8HdRcPMPUggI8ncJdfb0c1fwj4gEiUf6uPq5Kjj7B_j7APlBPAysaYk5xam8UJqbQcHNNcTZQze1ID8-tbggMTk1L7Uk3jXA2MTY0NTIwNHEmAglAFNuJNw</recordid><startdate>20191127</startdate><enddate>20191127</enddate><creator>YAMAMOTO, Yuuta</creator><creator>SUNAGA, Daisuke</creator><creator>THUAMTHONG, Wandee</creator><creator>PATTAMAMONGKOLCHAI, Yupin</creator><creator>ITO, Akira</creator><scope>EVB</scope></search><sort><creationdate>20191127</creationdate><title>METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER</title><author>YAMAMOTO, Yuuta ; SUNAGA, Daisuke ; THUAMTHONG, Wandee ; PATTAMAMONGKOLCHAI, Yupin ; ITO, Akira</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP3431520A43</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2019</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</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><topic>USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>YAMAMOTO, Yuuta</creatorcontrib><creatorcontrib>SUNAGA, Daisuke</creatorcontrib><creatorcontrib>THUAMTHONG, Wandee</creatorcontrib><creatorcontrib>PATTAMAMONGKOLCHAI, Yupin</creatorcontrib><creatorcontrib>ITO, Akira</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YAMAMOTO, Yuuta</au><au>SUNAGA, Daisuke</au><au>THUAMTHONG, Wandee</au><au>PATTAMAMONGKOLCHAI, Yupin</au><au>ITO, Akira</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER</title><date>2019-11-27</date><risdate>2019</risdate><abstract>The present invention is to provide a process for producing an oxymethylene copolymer, in which deteriorate due to oxidation hardly occurs, an amount of formaldehyde generated from the product, in particular, an amount of formaldehyde generated from the product when stored for a long time under environment of high temperature and high humidity is reduced, and occurrence of mold deposit during molding is small. More specifically, provided is a process for producing an oxymethylene copolymer which comprises
Step 1 of polymerizing polymer raw materials containing trioxane and a comonomer in the presence of a specific amount of an acid catalyst,
Step 2 of adding a hydroxylamine compound represented by the following general formula (1):
wherein R 1 and R 2 are as defined in the claims and the specification,
to a product obtained in the Step 1 in an amount of 1 to 20-fold mol based on an amount of the acid catalyst and mixing these, and
Step 3 of further melting and kneading a mixture of the product and the hydroxylamine compound obtained in the Step 2.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS |
| title | METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER |
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