N-METHYLOLACRYLAMIDE CRYSTAL, ITS PRODUCTION AND STORING THEREOF
PURPOSE: To remove formaldehyde-like odor of N-MAA crystals, reduce solidifying property after long term storage and hygienically improve working atmosphere in a place using the crystals and obtain the subject crystals by a simple operation process. CONSTITUTION: Crystalline N-methylolacrylamide (MA...
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creator | NIWA KIYONOBU YANO TAKEYA HAMANAKA MITSUHARU YOSHIDA NORIMASA |
description | PURPOSE: To remove formaldehyde-like odor of N-MAA crystals, reduce solidifying property after long term storage and hygienically improve working atmosphere in a place using the crystals and obtain the subject crystals by a simple operation process. CONSTITUTION: Crystalline N-methylolacrylamide (MAA) obtained by reacting acrylic amide with formaldehyde is subjected to cleaning treatment using a mixed solution of water with a water-soluble organic medium to provide N-MAA crystals substantially free from formaldehyde-like odor and having |
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CONSTITUTION: Crystalline N-methylolacrylamide (MAA) obtained by reacting acrylic amide with formaldehyde is subjected to cleaning treatment using a mixed solution of water with a water-soluble organic medium to provide N-MAA crystals substantially free from formaldehyde-like odor and having <=3kg/cm compression strength after elapsing for 2 month under 200g/cm pressure. The crystalline N-MAA substantially free from formaldehyde-like odor is subjected to exposing treatment under atmosphere containing an acidic gas or a basic gas to provide the objective N-MAA crystals having small solidifying property. 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CONSTITUTION: Crystalline N-methylolacrylamide (MAA) obtained by reacting acrylic amide with formaldehyde is subjected to cleaning treatment using a mixed solution of water with a water-soluble organic medium to provide N-MAA crystals substantially free from formaldehyde-like odor and having <=3kg/cm compression strength after elapsing for 2 month under 200g/cm pressure. The crystalline N-MAA substantially free from formaldehyde-like odor is subjected to exposing treatment under atmosphere containing an acidic gas or a basic gas to provide the objective N-MAA crystals having small solidifying property. The crystalline N-MAA substantially free from formaldehyde-like odor is retained and stored under atmosphere containing an acidic gas or a basic gas.</description><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS</subject><subject>CHEMISTRY</subject><subject>METALLURGY</subject><subject>ORGANIC CHEMISTRY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1996</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDw0_V1DfGI9PH3cXQOivRx9PV0cVUAsoJDHH10FDxDghUCgvxdQp1DPP39FBz9XBSCQ_yDPP3cFUI8XINc_d14GFjTEnOKU3mhNDeDoptriLOHbmpBfnxqcUFicmpeakm8V4CHgYWhsYmBsZGjMTFqANq6KyI</recordid><startdate>19960528</startdate><enddate>19960528</enddate><creator>NIWA KIYONOBU</creator><creator>YANO TAKEYA</creator><creator>HAMANAKA MITSUHARU</creator><creator>YOSHIDA NORIMASA</creator><scope>EVB</scope></search><sort><creationdate>19960528</creationdate><title>N-METHYLOLACRYLAMIDE CRYSTAL, ITS PRODUCTION AND STORING THEREOF</title><author>NIWA KIYONOBU ; YANO TAKEYA ; HAMANAKA MITSUHARU ; YOSHIDA NORIMASA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH08134032A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1996</creationdate><topic>ACYCLIC OR CARBOCYCLIC COMPOUNDS</topic><topic>CHEMISTRY</topic><topic>METALLURGY</topic><topic>ORGANIC CHEMISTRY</topic><toplevel>online_resources</toplevel><creatorcontrib>NIWA KIYONOBU</creatorcontrib><creatorcontrib>YANO TAKEYA</creatorcontrib><creatorcontrib>HAMANAKA MITSUHARU</creatorcontrib><creatorcontrib>YOSHIDA NORIMASA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>NIWA KIYONOBU</au><au>YANO TAKEYA</au><au>HAMANAKA MITSUHARU</au><au>YOSHIDA NORIMASA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>N-METHYLOLACRYLAMIDE CRYSTAL, ITS PRODUCTION AND STORING THEREOF</title><date>1996-05-28</date><risdate>1996</risdate><abstract>PURPOSE: To remove formaldehyde-like odor of N-MAA crystals, reduce solidifying property after long term storage and hygienically improve working atmosphere in a place using the crystals and obtain the subject crystals by a simple operation process. CONSTITUTION: Crystalline N-methylolacrylamide (MAA) obtained by reacting acrylic amide with formaldehyde is subjected to cleaning treatment using a mixed solution of water with a water-soluble organic medium to provide N-MAA crystals substantially free from formaldehyde-like odor and having <=3kg/cm compression strength after elapsing for 2 month under 200g/cm pressure. The crystalline N-MAA substantially free from formaldehyde-like odor is subjected to exposing treatment under atmosphere containing an acidic gas or a basic gas to provide the objective N-MAA crystals having small solidifying property. The crystalline N-MAA substantially free from formaldehyde-like odor is retained and stored under atmosphere containing an acidic gas or a basic gas.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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subjects | ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY |
title | N-METHYLOLACRYLAMIDE CRYSTAL, ITS PRODUCTION AND STORING THEREOF |
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