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US 6,552,091 B1Granted
Block-copolymeric polyalkylene oxides containing styrene oxide, obtained by alkoxylation, and their use
AssigneeGoldschmidt GmbH
InventorsTammo Boinowitz, Ellen Reuter, Stefan Silber, Joachim Venzmer
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Abstract
The invention relates to block-copolymeric polyalkylene oxides containing styrene oxide, obtained by alkoxylation, and their use as low-foam pigment wetting agents in aqueous pigment pastes with or without cosolvent and in aqueous and low-solvent coating materials and printing inks.
Claims19
A polyalkylene oxide of the general formula
- R1O(SO)a(EO)b(PO)c(BO)dR2, (I)
- where
- R1 is a straight-chain or branched or cycloaliphatic radical,
- R2 is hydrogen, an acyl radical, alkyl radical or carboxylic acid radical,
- SO is styrene oxide,
- EO is ethylene oxide,
- PO is propylene oxide,
- BO is butylene oxide, and
- a is from about 1 to about 1.9,
- b is from about 3 to about 50,
- c is from 0 to about 3, and
- d is from 0 to about 3,
- b being >=a+c+d.
10 more elements
A low-foam pigment wetting agent which comprises a polyalkylene oxide of the general formula
- R1O(SO)a(EO)b(PO)c(BO)dR2, (I)
- where
- R1 is a straight-chain or branched or cycloaliphatic radical,
- R2 is hydrogen, an acyl radical, alkyl radical or carboxylic acid radical,
- SO is styrene oxide,
- EO is ethylene oxide,
- PO is propylene oxide,
- BO is butylene oxide, and
- a is from 0 to about 1.9,
- b is from about 3 to about 50,
- c is from 0 to about 3, and
- d is from 0 to about 3,
- a, c or d being other than 0 and b being >=a+c+d.
10 more elements
Dependencies are inferred from the claim text.