ULTRAFINE COPPER POWDER AND ITS PRODUCTION
PURPOSE:To provide ultrafine copper powder which has excellent conductivity and is adequate as a conductive filler by incorporating metallic copper particles having a desired ultrafine grain size at a prescribed ratio or above into said powder. CONSTITUTION:A copper suboxide particle slurry and acid...
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| creator | KAWASUMI YOSHIO KYONO IWAO |
| description | PURPOSE:To provide ultrafine copper powder which has excellent conductivity and is adequate as a conductive filler by incorporating metallic copper particles having a desired ultrafine grain size at a prescribed ratio or above into said powder. CONSTITUTION:A copper suboxide particle slurry and acid (most preferably sulfuric acid) are mixed and while both are homogenized by stirring, etc., the temp. of the reactive liquid is maintained at |
| format | Patent |
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CONSTITUTION:A copper suboxide particle slurry and acid (most preferably sulfuric acid) are mixed and while both are homogenized by stirring, etc., the temp. of the reactive liquid is maintained at <=25 deg.C. The amt. of the acid to be added or mixed is so selected that the pH of the formed slurry attains <=2.5 and the acid is required to be added for <2min. The slurry concn. of the copper suboxide particles is 1-40g/l, more preferably 100-200g/l. On the other hand, the preferable acid concn. in the case of using sulfuric acid for the acid is preferably 100-500g/l. The copper powder obtd. by the above-mentioned operation contains >=50wt% pulverous metallic copper particles having 0.1-1.0mu grain size, has the controlled grain size and grain size distribution and is adequate as the powder for the conductive filler.</description><language>eng</language><subject>ADHESIVES ; CASTING ; CHEMISTRY ; DYES ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; PERFORMING OPERATIONS ; POLISHES ; POWDER METALLURGY ; PREPARATION OF CARBON BLACK ; TRANSPORTING ; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; WORKING METALLIC POWDER</subject><creationdate>1986</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=19860806&DB=EPODOC&CC=JP&NR=S61174301A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860806&DB=EPODOC&CC=JP&NR=S61174301A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAWASUMI YOSHIO</creatorcontrib><creatorcontrib>KYONO IWAO</creatorcontrib><title>ULTRAFINE COPPER POWDER AND ITS PRODUCTION</title><description>PURPOSE:To provide ultrafine copper powder which has excellent conductivity and is adequate as a conductive filler by incorporating metallic copper particles having a desired ultrafine grain size at a prescribed ratio or above into said powder. CONSTITUTION:A copper suboxide particle slurry and acid (most preferably sulfuric acid) are mixed and while both are homogenized by stirring, etc., the temp. of the reactive liquid is maintained at <=25 deg.C. The amt. of the acid to be added or mixed is so selected that the pH of the formed slurry attains <=2.5 and the acid is required to be added for <2min. The slurry concn. of the copper suboxide particles is 1-40g/l, more preferably 100-200g/l. On the other hand, the preferable acid concn. in the case of using sulfuric acid for the acid is preferably 100-500g/l. The copper powder obtd. by the above-mentioned operation contains >=50wt% pulverous metallic copper particles having 0.1-1.0mu grain size, has the controlled grain size and grain size distribution and is adequate as the powder for the conductive filler.</description><subject>ADHESIVES</subject><subject>CASTING</subject><subject>CHEMISTRY</subject><subject>DYES</subject><subject>MAKING METALLIC POWDER</subject><subject>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>PERFORMING OPERATIONS</subject><subject>POLISHES</subject><subject>POWDER METALLURGY</subject><subject>PREPARATION OF CARBON BLACK</subject><subject>TRANSPORTING</subject><subject>TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES</subject><subject>WORKING METALLIC POWDER</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1986</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAK9QkJcnTz9HNVcPYPCHANUgjwD3cBUo5-LgqeIcEKAUH-LqHOIZ7-fjwMrGmJOcWpvFCam0HRzTXE2UM3tSA_PrW4IDE5NS-1JN4rINjM0NDcxNjA0NGYGDUAZV4lBQ</recordid><startdate>19860806</startdate><enddate>19860806</enddate><creator>KAWASUMI YOSHIO</creator><creator>KYONO IWAO</creator><scope>EVB</scope></search><sort><creationdate>19860806</creationdate><title>ULTRAFINE COPPER POWDER AND ITS PRODUCTION</title><author>KAWASUMI YOSHIO ; KYONO IWAO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS61174301A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1986</creationdate><topic>ADHESIVES</topic><topic>CASTING</topic><topic>CHEMISTRY</topic><topic>DYES</topic><topic>MAKING METALLIC POWDER</topic><topic>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>PERFORMING OPERATIONS</topic><topic>POLISHES</topic><topic>POWDER METALLURGY</topic><topic>PREPARATION OF CARBON BLACK</topic><topic>TRANSPORTING</topic><topic>TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES</topic><topic>WORKING METALLIC POWDER</topic><toplevel>online_resources</toplevel><creatorcontrib>KAWASUMI YOSHIO</creatorcontrib><creatorcontrib>KYONO IWAO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KAWASUMI YOSHIO</au><au>KYONO IWAO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ULTRAFINE COPPER POWDER AND ITS PRODUCTION</title><date>1986-08-06</date><risdate>1986</risdate><abstract>PURPOSE:To provide ultrafine copper powder which has excellent conductivity and is adequate as a conductive filler by incorporating metallic copper particles having a desired ultrafine grain size at a prescribed ratio or above into said powder. CONSTITUTION:A copper suboxide particle slurry and acid (most preferably sulfuric acid) are mixed and while both are homogenized by stirring, etc., the temp. of the reactive liquid is maintained at <=25 deg.C. The amt. of the acid to be added or mixed is so selected that the pH of the formed slurry attains <=2.5 and the acid is required to be added for <2min. The slurry concn. of the copper suboxide particles is 1-40g/l, more preferably 100-200g/l. On the other hand, the preferable acid concn. in the case of using sulfuric acid for the acid is preferably 100-500g/l. The copper powder obtd. by the above-mentioned operation contains >=50wt% pulverous metallic copper particles having 0.1-1.0mu grain size, has the controlled grain size and grain size distribution and is adequate as the powder for the conductive filler.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ADHESIVES CASTING CHEMISTRY DYES MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PERFORMING OPERATIONS POLISHES POWDER METALLURGY PREPARATION OF CARBON BLACK TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES WORKING METALLIC POWDER |
| title | ULTRAFINE COPPER POWDER AND ITS PRODUCTION |
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