Surfactants
AssigneeImperial Chemical Industries PLC
InventorsNeil Michael Carpenter, Steven John Anderson, Richard Robert Tenore, Peter Glynn Hibbert
Life of this patent
Estimating the term…
Abstract
Compounds of the formula R2.[(AO)n.R3]m, where R2 is a residue of a group having at least m active hydrogen atoms derived from hydroxyl and/or amino and/or amido groups, AO is alkyleneoxy, n is 2 to 200; R3 includes residue(s) of alkenyl succinic acids and optionally other acids, and m is 2 to 10, but when m is 2 there are other restrictions in the definitions, are disclosed as useful thickeners and/or dispersants in aqueous systems. The use of such materials as thickeners is also disclosed.
Claims13
Compounds of the formula (I):
- R2.[(AO)n.R3]m (I)
- where:
- R2 is the residue of a group having at least m active hydrogen atoms derived from hydroxyl and/or amino and/or amido groups;
- AO is an alkylene oxide residue, which may vary along the chain;
- each n is from 2 to 200;
- m is from 2 to 10;
- and
- each R3 is H, hydrocarbyl, long chain alk(en)yl succinic acyl group of the formula
- OC.(HR)C.C(HR1).COY
- where:
- one of R and R1 in the succinic moiety is C8 to C22 alkenyl or alkyl and the other is hydrogen, and
- Y is a group OM where M is hydrogen, metal, amonium, amine, especially alkylamine (including alkanolamine), onium, hydrocarbyl;
- or
- Y is NR4R5 where R4 and R5 are each independently hydrogen, hydrocarbyl, particularly alkyl;
- or a long chain acyl group —OC.R6, where R6 is a long chain hydrocarbyl group;
- or a short chain acyl group —OC.R7, where R7 is a short chain hydrocarbyl group;
- where at least two of the groups R3 are long chain acyl groups, and at least one of the long chain acyl groups is/are long chain alkenyl or alkyl succinic group(s);
- provided that where R1 is ethylene glycolyl or propylene glycolyl, m is 2, and both groups R2 are alk(en)yl succinic groups, the total of the indices n is at least 120.
Compounds of the formula (Ia):
- R2.[(AO)n.R3]m (Ia)
- where:
- R2 is the residue of a group having at least m active hydrogen atoms derived from hydroxyl and/or amino and/or amido groups;
- AO represents ethylene oxide residues or a mixture of ethylene oxide residues and propylene oxide residues in which the molar proportion of ethylene oxide residues is at least 50% and desirably at least 70%;
- each n is from 10 to 200 such that the total of the indices n is at least 120
- m is from 2 to 10;
- each R3 is H;
- hydrocarbyl;
- a long chain alk(en)yl succinic acyl group of the formula:
- —OC.(HR)C.C(HR1).COY
- where:
- one of R and R1 in the succinic moiety is C8 to C22 alkenyl or alkyl and the other is hydrogen, and
- Y is a group OM where M is hydrogen, metal, amonium, amine, or
- Y is NR4R5 where R4 and R5 are each independently hydrogen, a hydrocarbyl group;
- a long chain acyl group —OC.R6, where R6 is a long chain hydrocarbyl group;
- or
- a short chain acyl group —OC.R7, where R7 is a short chain hydrocarbyl group;
- where at least two of the groups R3 are long chain acyl groups and at least one of the long chain acyl groups is/are long chain alkenyl or alkyl succinic group(s).
A method of thickening an aqueous system which comprises including in the aqueous phase a thickening effective amount of a compound of the formula (II):
- R12.[(AO2)n2.R13]m2 (II)
- where:
- R12 is the residue of an optionally substituted hydrocarbyl group having at least m active hydrogen atoms derived from hydroxyl and/or amino and/or amido groups;
- AO2 is an alkylene oxide residue, which may vary along the chain;
- each n2 is from 10 to 200, such that the total of the indices n2 is at least 50;
- m2 is from 2 to 10;
- and
- each R13 is H, hydrocarbyl, a long chain alk(en)yl succinic acyl group of the formula:
- —OC.(HR10)C.C(HR11).COY2
- where:
- one of R10 and R11 in the succinic acid moiety is C8 to C22 alkenyl or alkyl and the other is hydrogen, and
- Y2 is a group OM2 where M2 is hydrogen, metal, amonium, amine especially alkylamine, alkyl;
- or
- Y2 is NR14R15 where R15 and R15 are each independently hydrogen, a hydrocarbyl;
- or a long chain acyl group —OC.R16, where R16 is a long chain hydrocarbyl group;
- or a short chain acyl group —OC.R17, where R17 is a short chain hydrocarbyl group;
- where at least two of the groups R13 are long chain acyl groups, and at least one of the long chain acyl groups is a long chain alkenyl or alkyl succinic group.
Dependencies are inferred from the claim text.