PRODUCTION OF METALLIC COPPER FINE POWDER

PRODUCTION OF METALLIC COPPER FINE POWDER

PURPOSE:To obtain metallic copper fine powder having a controlled particle shape or particle size by adding either inexpensive cuprous oxide particles for a ship bottom paint or an acid while expending more than a fixed time so as to obtain the strong acidity less than a prescribed pH value of the r...

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Hauptverfasser: KAWASUMI YOSHIO, KYONO IWAO
Format: Patent
Sprache:eng
Schlagworte:
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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creator KAWASUMI YOSHIO
KYONO IWAO
description PURPOSE:To obtain metallic copper fine powder having a controlled particle shape or particle size by adding either inexpensive cuprous oxide particles for a ship bottom paint or an acid while expending more than a fixed time so as to obtain the strong acidity less than a prescribed pH value of the resultant slurry and by allowing to react both with each other. CONSTITUTION:Cuprous oxide particles for a ship bottom paint which are inexpensive, chemically stable and readily available in large quantities and an acid such as nitric acid, phosphoric acid, acetic acid, etc. particularly sulfuric acid are mixed and the homogenizing of above-mentioned cuprous oxide particle slurry and the acid is promoted by stirring, etc. In this case, it is necessary that the quantity of acid to be added or mixed is added while expanding >=15min so as to obtain
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CONSTITUTION:Cuprous oxide particles for a ship bottom paint which are inexpensive, chemically stable and readily available in large quantities and an acid such as nitric acid, phosphoric acid, acetic acid, etc. particularly sulfuric acid are mixed and the homogenizing of above-mentioned cuprous oxide particle slurry and the acid is promoted by stirring, etc. In this case, it is necessary that the quantity of acid to be added or mixed is added while expanding &gt;=15min so as to obtain &lt;=2.5pH value of the resultant slurry. The slurry concentration of the cuprous oxide particles is 1-400g/l, preferably 100-200g/l, and when the acid is sulfuric acid, the preferable acid concentration is 100-500g/l. As a result, the cuprous oxide fine powders having a controlled particle size and a globular form without containing a rod-like or needle-like powders are obtained without requiring processes such as classification, screening, mixing, etc.</description><language>eng</language><subject>CASTING ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; PERFORMING OPERATIONS ; POWDER METALLURGY ; TRANSPORTING ; 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&amp;date=19860806&amp;DB=EPODOC&amp;CC=JP&amp;NR=S61174303A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19860806&amp;DB=EPODOC&amp;CC=JP&amp;NR=S61174303A$$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>PRODUCTION OF METALLIC COPPER FINE POWDER</title><description>PURPOSE:To obtain metallic copper fine powder having a controlled particle shape or particle size by adding either inexpensive cuprous oxide particles for a ship bottom paint or an acid while expending more than a fixed time so as to obtain the strong acidity less than a prescribed pH value of the resultant slurry and by allowing to react both with each other. CONSTITUTION:Cuprous oxide particles for a ship bottom paint which are inexpensive, chemically stable and readily available in large quantities and an acid such as nitric acid, phosphoric acid, acetic acid, etc. particularly sulfuric acid are mixed and the homogenizing of above-mentioned cuprous oxide particle slurry and the acid is promoted by stirring, etc. In this case, it is necessary that the quantity of acid to be added or mixed is added while expanding &gt;=15min so as to obtain &lt;=2.5pH value of the resultant slurry. The slurry concentration of the cuprous oxide particles is 1-400g/l, preferably 100-200g/l, and when the acid is sulfuric acid, the preferable acid concentration is 100-500g/l. As a result, the cuprous oxide fine powders having a controlled particle size and a globular form without containing a rod-like or needle-like powders are obtained without requiring processes such as classification, screening, mixing, etc.</description><subject>CASTING</subject><subject>MAKING METALLIC POWDER</subject><subject>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</subject><subject>PERFORMING OPERATIONS</subject><subject>POWDER METALLURGY</subject><subject>TRANSPORTING</subject><subject>WORKING METALLIC POWDER</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1986</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZNAMCPJ3CXUO8fT3U_B3U_B1DXH08fF0VnD2DwhwDVJw8_RzVQjwD3dxDeJhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfFeAcFmhobmJsYGxo7GxKgBADPiJJ0</recordid><startdate>19860806</startdate><enddate>19860806</enddate><creator>KAWASUMI YOSHIO</creator><creator>KYONO IWAO</creator><scope>EVB</scope></search><sort><creationdate>19860806</creationdate><title>PRODUCTION OF METALLIC COPPER FINE POWDER</title><author>KAWASUMI YOSHIO ; KYONO IWAO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS61174303A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1986</creationdate><topic>CASTING</topic><topic>MAKING METALLIC POWDER</topic><topic>MANUFACTURE OF ARTICLES FROM METALLIC POWDER</topic><topic>PERFORMING OPERATIONS</topic><topic>POWDER METALLURGY</topic><topic>TRANSPORTING</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>PRODUCTION OF METALLIC COPPER FINE POWDER</title><date>1986-08-06</date><risdate>1986</risdate><abstract>PURPOSE:To obtain metallic copper fine powder having a controlled particle shape or particle size by adding either inexpensive cuprous oxide particles for a ship bottom paint or an acid while expending more than a fixed time so as to obtain the strong acidity less than a prescribed pH value of the resultant slurry and by allowing to react both with each other. CONSTITUTION:Cuprous oxide particles for a ship bottom paint which are inexpensive, chemically stable and readily available in large quantities and an acid such as nitric acid, phosphoric acid, acetic acid, etc. particularly sulfuric acid are mixed and the homogenizing of above-mentioned cuprous oxide particle slurry and the acid is promoted by stirring, etc. In this case, it is necessary that the quantity of acid to be added or mixed is added while expanding &gt;=15min so as to obtain &lt;=2.5pH value of the resultant slurry. The slurry concentration of the cuprous oxide particles is 1-400g/l, preferably 100-200g/l, and when the acid is sulfuric acid, the preferable acid concentration is 100-500g/l. As a result, the cuprous oxide fine powders having a controlled particle size and a globular form without containing a rod-like or needle-like powders are obtained without requiring processes such as classification, screening, mixing, etc.</abstract><oa>free_for_read</oa></addata></record>
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subjects CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
title PRODUCTION OF METALLIC COPPER FINE POWDER
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