METHOD FOR PRODUCING PIGMENT DISPERSION
PROBLEM TO BE SOLVED: To provide a pigment dispersion in which a commercially available pigment can be used and an aqueous coating or ink using the dispersion is excellent in long-term storage stability and provides a coating film or printed matter with a high optical density (OD), good scratch resi...
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| creator | KAWANAKA SHUNSUKE SATOU MORIO |
| description | PROBLEM TO BE SOLVED: To provide a pigment dispersion in which a commercially available pigment can be used and an aqueous coating or ink using the dispersion is excellent in long-term storage stability and provides a coating film or printed matter with a high optical density (OD), good scratch resistance and water resistance. SOLUTION: The method for producing the pigment dispersion comprises: (1) a first step of neutralizing with a base a part or all of acid groups in a resin which has a weight average molecular weight (Mw) in the range of 9,000-80,000 and has acid groups and then emulsifying or suspending the resin into an aqueous medium to obtain a resin dispersion having an average particle size of the resin in the range of 0.01-1 μm; (2) a second step of adding a pigment to the resin obtained in the first step and then grinding the mixture; and (3) a third step of further finely-dividing the ground matter obtained in the second step with a homogenizer. COPYRIGHT: (C)2005,JPO&NCIPI |
| format | Patent |
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SOLUTION: The method for producing the pigment dispersion comprises: (1) a first step of neutralizing with a base a part or all of acid groups in a resin which has a weight average molecular weight (Mw) in the range of 9,000-80,000 and has acid groups and then emulsifying or suspending the resin into an aqueous medium to obtain a resin dispersion having an average particle size of the resin in the range of 0.01-1 μm; (2) a second step of adding a pigment to the resin obtained in the first step and then grinding the mixture; and (3) a third step of further finely-dividing the ground matter obtained in the second step with a homogenizer. COPYRIGHT: (C)2005,JPO&NCIPI</description><edition>7</edition><language>eng</language><subject>ADHESIVES ; CHEMICAL PAINT OR INK REMOVERS ; CHEMISTRY ; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS ; CORRECTING FLUIDS ; DYES ; FILLING PASTES ; INKS ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; PASTES OR SOLIDS FOR COLOURING OR PRINTING ; POLISHES ; USE OF MATERIALS THEREFOR ; WOODSTAINS</subject><creationdate>2005</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=20050217&DB=EPODOC&CC=JP&NR=2005041992A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050217&DB=EPODOC&CC=JP&NR=2005041992A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KAWANAKA SHUNSUKE</creatorcontrib><creatorcontrib>SATOU MORIO</creatorcontrib><title>METHOD FOR PRODUCING PIGMENT DISPERSION</title><description>PROBLEM TO BE SOLVED: To provide a pigment dispersion in which a commercially available pigment can be used and an aqueous coating or ink using the dispersion is excellent in long-term storage stability and provides a coating film or printed matter with a high optical density (OD), good scratch resistance and water resistance. SOLUTION: The method for producing the pigment dispersion comprises: (1) a first step of neutralizing with a base a part or all of acid groups in a resin which has a weight average molecular weight (Mw) in the range of 9,000-80,000 and has acid groups and then emulsifying or suspending the resin into an aqueous medium to obtain a resin dispersion having an average particle size of the resin in the range of 0.01-1 μm; (2) a second step of adding a pigment to the resin obtained in the first step and then grinding the mixture; and (3) a third step of further finely-dividing the ground matter obtained in the second step with a homogenizer. 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SOLUTION: The method for producing the pigment dispersion comprises: (1) a first step of neutralizing with a base a part or all of acid groups in a resin which has a weight average molecular weight (Mw) in the range of 9,000-80,000 and has acid groups and then emulsifying or suspending the resin into an aqueous medium to obtain a resin dispersion having an average particle size of the resin in the range of 0.01-1 μm; (2) a second step of adding a pigment to the resin obtained in the first step and then grinding the mixture; and (3) a third step of further finely-dividing the ground matter obtained in the second step with a homogenizer. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS |
| title | METHOD FOR PRODUCING PIGMENT DISPERSION |
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