发明名称 |
Process, composition and ink |
摘要 |
A process for purifying a composition comprising: i) an encapsulated pigment comprising a pigment and an encapsulant material comprising a cross-linked dispersant; ii) a liquid medium; and iii) free dispersant; said process comprising removal of at least some free dispersant from the composition using a membrane having a molecular weight cut-off of 3 to 30 times the weight average molecular weight of the dispersant prior to cross-linking, with the proviso that all of conditions a), b) and c) are met: a) the pigment is not silicon dioxide; b) the cross-linked dispersant is not cross-linked polyethyleneimine; and c) the cross-linked dispersant is not a dispersant which has been cross-linked with bis-ethene,1,1′-[methylene bis(sulfonyl)]. |
申请公布号 |
US8227525(B2) |
申请公布日期 |
2012.07.24 |
申请号 |
US20070444174 |
申请日期 |
2007.10.04 |
申请人 |
BISSON ADRIAN PETER;MCINTYRE CHARLES RUPERT;CUTHBERTSON GARY;CORDWELL RICHARD JOHN STUART ALLAN;ANNABLE TOM;FUJIFILM IMAGING COLORANTS LIMITED |
发明人 |
BISSON ADRIAN PETER;MCINTYRE CHARLES RUPERT;CUTHBERTSON GARY;CORDWELL RICHARD JOHN STUART ALLAN;ANNABLE TOM |
分类号 |
C09D11/00 |
主分类号 |
C09D11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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