Coloured, water-dissipatable polyurethanes
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United States of America Patent
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Issued Date -
May 27, 2004
app pub date -
Mar 19, 2003
filing date -
Dec 12, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A coloured, water-dissipatable polyurethane having a weight average molecular weight .ltoreq.30,000 Daltons obtained from the reaction of components comprising i) a polyisocyanate, ii) a compound providing ionic water-dispersing groups, iii) a colorant having two or more functional groups and iv) optionally a colorant having one functional group wherein the coloured, water-dissipatable polyurethane comprises at least 18% by weight of colorant.
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