Polyvinyl alcohol powder and method for producing same
The present invention is characterized by being a polyvinyl alcohol powder which has an average particle diameter of 100 to 2000 um as measured on an optical microscope at a humidity of 65% RH and a temperature of 25oC, in which a portion having particle diameters of 500 to 1000 um has a bulk densit...
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| creator | FUNAKOSHI JUNJI HORIGUCHI JUNPEI TANAKA KAZUYUKI |
| description | The present invention is characterized by being a polyvinyl alcohol powder which has an average particle diameter of 100 to 2000 um as measured on an optical microscope at a humidity of 65% RH and a temperature of 25oC, in which a portion having particle diameters of 500 to 1000 um has a bulk density (g/ml) of 0.60 to 0.80 exclusive and the content of a portion having particle diameters of 500 to 1000 um is 35 to 70% by mass. Thus, a polyvinyl alcohol powder is provided, which has good scattering resistance, exhibits excellent solubility when an aqueous solution is prepared from the polyvinyl alcohol powder that has a powdery form, and for which the transportation cost can be reduced due to the high density thereof.
聚乙烯醇粉体，其特征在于，在湿度65%RH、温度25℃下通过光学显微镜观察进行测定时的平均粒径为100~2000μm，粒径为500~1000μm的部分的体积比重（g/ml）超过0.60且低于0.80，且粒径为500~1000μm的部分的比例为35~70质量%。由此，提供耐飞散性良好、由粉体形状制备水溶液时的溶解性优异、并且因比重大而能够降低运输成本的聚乙烯醇粉体。 |
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聚乙烯醇粉体，其特征在于，在湿度65%RH、温度25℃下通过光学显微镜观察进行测定时的平均粒径为100~2000μm，粒径为500~1000μm的部分的体积比重（g/ml）超过0.60且低于0.80，且粒径为500~1000μm的部分的比例为35~70质量%。由此，提供耐飞散性良好、由粉体形状制备水溶液时的溶解性优异、并且因比重大而能够降低运输成本的聚乙烯醇粉体。</description><language>chi ; eng</language><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; GENERAL PROCESSES OF COMPOUNDING ; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; WORKING-UP</subject><creationdate>2017</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=20170510&DB=EPODOC&CC=CN&NR=106661147A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170510&DB=EPODOC&CC=CN&NR=106661147A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FUNAKOSHI JUNJI</creatorcontrib><creatorcontrib>HORIGUCHI JUNPEI</creatorcontrib><creatorcontrib>TANAKA KAZUYUKI</creatorcontrib><title>Polyvinyl alcohol powder and method for producing same</title><description>The present invention is characterized by being a polyvinyl alcohol powder which has an average particle diameter of 100 to 2000 um as measured on an optical microscope at a humidity of 65% RH and a temperature of 25oC, in which a portion having particle diameters of 500 to 1000 um has a bulk density (g/ml) of 0.60 to 0.80 exclusive and the content of a portion having particle diameters of 500 to 1000 um is 35 to 70% by mass. Thus, a polyvinyl alcohol powder is provided, which has good scattering resistance, exhibits excellent solubility when an aqueous solution is prepared from the polyvinyl alcohol powder that has a powdery form, and for which the transportation cost can be reduced due to the high density thereof.
聚乙烯醇粉体，其特征在于，在湿度65%RH、温度25℃下通过光学显微镜观察进行测定时的平均粒径为100~2000μm，粒径为500~1000μm的部分的体积比重（g/ml）超过0.60且低于0.80，且粒径为500~1000μm的部分的比例为35~70质量%。由此，提供耐飞散性良好、由粉体形状制备水溶液时的溶解性优异、并且因比重大而能够降低运输成本的聚乙烯醇粉体。</description><subject>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>GENERAL PROCESSES OF COMPOUNDING</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>WORKING-UP</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDALyM-pLMvMq8xRSMxJzs_Iz1EoyC9PSS1SSMxLUchNLcnIT1FIyy9SKCjKTylNzsxLVyhOzE3lYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxzn6GBmZmZoaGJuaOxsSoAQC2ES2y</recordid><startdate>20170510</startdate><enddate>20170510</enddate><creator>FUNAKOSHI JUNJI</creator><creator>HORIGUCHI JUNPEI</creator><creator>TANAKA KAZUYUKI</creator><scope>EVB</scope></search><sort><creationdate>20170510</creationdate><title>Polyvinyl alcohol powder and method for producing same</title><author>FUNAKOSHI JUNJI ; HORIGUCHI JUNPEI ; TANAKA KAZUYUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN106661147A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2017</creationdate><topic>AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>GENERAL PROCESSES OF COMPOUNDING</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>WORKING-UP</topic><toplevel>online_resources</toplevel><creatorcontrib>FUNAKOSHI JUNJI</creatorcontrib><creatorcontrib>HORIGUCHI JUNPEI</creatorcontrib><creatorcontrib>TANAKA KAZUYUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>FUNAKOSHI JUNJI</au><au>HORIGUCHI JUNPEI</au><au>TANAKA KAZUYUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Polyvinyl alcohol powder and method for producing same</title><date>2017-05-10</date><risdate>2017</risdate><abstract>The present invention is characterized by being a polyvinyl alcohol powder which has an average particle diameter of 100 to 2000 um as measured on an optical microscope at a humidity of 65% RH and a temperature of 25oC, in which a portion having particle diameters of 500 to 1000 um has a bulk density (g/ml) of 0.60 to 0.80 exclusive and the content of a portion having particle diameters of 500 to 1000 um is 35 to 70% by mass. Thus, a polyvinyl alcohol powder is provided, which has good scattering resistance, exhibits excellent solubility when an aqueous solution is prepared from the polyvinyl alcohol powder that has a powdery form, and for which the transportation cost can be reduced due to the high density thereof.
聚乙烯醇粉体，其特征在于，在湿度65%RH、温度25℃下通过光学显微镜观察进行测定时的平均粒径为100~2000μm，粒径为500~1000μm的部分的体积比重（g/ml）超过0.60且低于0.80，且粒径为500~1000μm的部分的比例为35~70质量%。由此，提供耐飞散性良好、由粉体形状制备水溶液时的溶解性优异、并且因比重大而能够降低运输成本的聚乙烯醇粉体。</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | Polyvinyl alcohol powder and method for producing same |
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