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US 7,442,724 B2Granted
Dispersants for preparing aqueous pigment pastes
AssigneeGoldschmidt GmbH
InventorsJutta Esselborn, Philippe Favresse, Kathrin Lehmann, Ute Linke, Angela Rüttgerodt, Stefan Silber
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Abstract
The invention relates to the use of copolymers with styrene-oxide-based, vinyl-functionalized polyethers for preparing aqueous pigment preparations.
Claims24
A method for dispersing a preparation comprising solid components which is a coating paint, printing ink, or aqueous or co-solvent containing pigment concentrate which comprises adding at least one dispersing additive comprising copolymers composed of
- A) from about 1 to about 80 mol % of styrene-oxide based oxyalkylene glycol ethers or polyalkylene oxide ethers which comprise of one structural group of the formula Ia, Ib, Ic and/or Id
- where
- R1=H or an aliphatic hydrocarbon radical,
- p=1 to 4,
- q=0 to 6,
- t=0 to 4,
- i=1 to 6,
- l=2 or is 1 in the situation where (CmHlmO)n or (Cm′Hlm′)o is SO,
- m=2 to 18,
- m′=2 to 18,
- the index on the H atom being formed by the product of l and m,
- n=0 to 100,
- o=0 to 100,
- SO=styrene oxide
- where
- (SO)i and the alkylene oxide derivatives can be distributed randomly or blockwise in the polyether,
- R2=H, an aliphatic, linear or branched hydrocarbon radical having 1 to 6 carbon atoms, a cycloaliphatic hydrocarbon having 5 to 8 carbon atoms an aryl radical having 6 to 14 carbon atoms, phosphoric ester or a monophosphate ester;
- B) from about 1 to about 90 mol % of unsaturated carboxylic acid and/or dicarboxylic acid derivatives comprising at least one structural group of the formula II
- where
- S=—H, —COOMa, or —COOR3,
- where
- M=hydrogen, monovalent or divalent metal cation, ammonium ion, or organic amine radical,
- a=1 or, if M is a divalent metal cation, is ½,
- R3=an aliphatic, linear or branched hydrocarbon radical, a cycloaliphatic hydrocarbon, or an aryl radical,
- T=—U1—R4 or —U1—(CmHlmO)n—(Cm′Hlm′O)o—R2,
- where
- U1=—COO—, —CONH—, —CONR3—, —O—, or —CH2O—,
- R4=H, Ma, R3or —Q1—NQ2Q3,
- where
- Q1 is a divalent alkylene radical having 2 to 24 carbon atoms,
- Q2 and Q3— are aliphatic and/or alicyclic alkyl radicals having 1 to 12 carbon atoms, optionally oxidized to —Q1—N(+)O(−)Q2Q3
- and
- m, m′, n, l, o, R1 and R2 are as defined above;
- and
- C) from 0 to about 10 mol % of dicarboxylic acid derivatives comprising at least one structural group of the formula III
- where
- T1=—U1—(CmHlmO)n—(Cm′Hlm′O)o—R5,
- where
- where
- U2=—OOC—, —NHOC—, —O—, or —O—CH2—,
- where
- m, m′, n, l, o, S, R1, R2 and U1 are as defined above.
39 more elements
A pigment-containing preparation comprising at least one pigment and from about 0.1 to about 200% by weight, based upon the pigment, of at least one dispersion additive comprising copolymers composed of
- A) from about 1 to about 80 mol % of styrene-oxide based oxyalkylene glycol ethers or polyalkylene oxide ethers which comprise of one structural group of the formula Ia, Ib, Ic and/or Id
- where
- R1=H or an aliphatic hydrocarbon radical,
- p=1 to 4,
- q=0 to 6,
- t=0 to 4,
- i=1 to 6,
- l=2 or is 1 in the situation where (CmHlmO)n or (Cm′Hlm′O)o is SO,
- m=2 to 18,
- m′=2 to 18,
- the index on the H atom being formed by the product of l and m or l and m′,
- n=0 to 100
- o=0 to 100,
- SO=styrene oxide
- where
- (SO)i and the alkylene oxide derivatives can be distributed randomly or blockwise in the polyether,
- R2=H, an aliphatic, linear or branched hydrocarbon radical having 1 to 6 carbon atoms,, a cycloaliphatic hydrocarbon having 5 to 8 carbon atoms, an aryl radical having 6 to 14 carbon atoms, phosphoric ester or a monophosphate ester;
- B) from about 1 to about 90 mol % of unsaturated carboxylic acid and/or dicarboxylic acid derivatives comprising at least one structural group of the formula II
- where
- S=—H, —COOMa, or —COOR3,
- where
- M=hydrogen, monovalent or divalent metal cation, ammonium ion, or an organic amine radical,
- a=1 or, if M is a divalent metal cation, is ½,
- R3=an aliphatic, linear or branched hydrocarbon radical, a cycloaliphatic hydrocarbon, or an aryl radical,
- T=—U1—R4 or —U1—(CmHlmO)n—(Cm′Hlm′O)o—R2,
- where
- U1=—COO—, —CONH—, —CONR3—, —O—, or —CH2O—,
- R4=H, Ma, R3 or -Q1-NQ2Q3,
- where
- Q1 is a divalent alkylene radical having 2 to 24 carbon atoms,
- Q2 and Q3 —are aliphatic and/or alicyclic alkyl radicals having 1 to 12 carbon atoms, optionally oxidized to —Q1—N(+)O(−)Q2Q3
- and
- m, m′, n, l, o, R1 and R2 are as defined above;
- and
- C) from 0 to about 10 mol % of dicarboxylic acid derivatives comprising at least one structural group of the formula III
- where
- T1=—U1—(CmHlmO)n—(Cm′Hlm′O)o—R5,
- where
- where
- U2=—OOC—, —NHOC—, —O—, or —O—CH2—,
- where
- m, m′, n, l, o, S, R1, R2 and U1 are as defined above.
39 more elements
Dependencies are inferred from the claim text.