Water-dissipatable polymers and their use in aqueous systems
AssigneeAkzo Nobel N.V.
InventorsRoelof Buter, Andreas Henricus Johannes Roelofs
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Abstract
The invention pertains to water-dissipatable polymers comprising lipophilic polymers having pendant sulfonic acid salt groups and, optionally, pendant nonionic groups, methods of making such water-dissipatable polymers and the use of such polymers in aqueous systems, including aqueous coating compositions. The invention also pertains to addition polymer polyols having such pendant sulfonic acid salt groups and, optionally, pendant nonionic groups, their methods of manufacture and their use in aqueous systems, including aqueous coating compositions. The polymers of the invention may be used as, for example, binders, emulsifying agents and dispersing agents in aqueous systems, especially aqueous coating compositions.
Claims16
An aqueous coating composition comprising a water-dissipatable polymer comprising a lipophilic polymer polyol having pendant sulfonic acid salt groups and a polyisocyanate curing agent, characterized in that said pendant sulfonic acid salt groups are of the following formula
- wherein
- R1 is selected from the group consisting of (a) C1 to C20 alkyl or (b) the following formula
- wherein R3 and R4 are, independently, selected from the group consisting of hydrogen and methyl, and
- X is the residue of a monoepoxy-containing compound,
- R2 is selected from the group consisting of C1 to C8 alkylene and
- M is a cation,
- said sulfonic acid salt groups present in an amount sufficient to render said lipophilic polymer polyol water-dissipatable.
An aqueous coating composition comprising a water-dissipatable polymer comprising a lipophilic polymer polyol having pendant sulfonic acid salt groups and a polyisocyanate curing agent, characterized in that said pendant sulfonic acid salt groups are of the following formula
- wherein,
- R1 is hydrogen,
- R2 is C2 alkylene,
- M is a cation,
- said sulfonic acid salt groups present in an amount sufficient to render said lipophilic polymer polyol water-dissipatable, and
- said pendant sulfonic acid salt groups being provided by monomers which are the reaction product of
- (a) free radically polymerizable monomers having an isocyanate group and
- (b) alkali metal taurinates.
An aqueous coating composition comprising a water-dissipatable polymer comprising a lipophilic polymer polyol having pendant sulfonic acid salt groups and a polyisocyanate curing agent, characterized in that said pendant sulfonic acid salt groups are of the following formula
- wherein,
- R1 is selected from the group (a) hydrogen, (b) C1 to C20 alkyl, (c) the following formula
- wherein R3 and R4 are independently selected from the group hydrogen and methyl, and
- X is the residue of a monoepoxy-containing compound,
- R2 is selected from the group C1 to C8 alkylene, and
- M is cation,
- said sulfonic acid salt groups present in an amount sufficient to render said lipophilic polymer polyol water-dissipatable,
- the lipophilic polymer polyol being an addition polymer polyol, and
- the aqueous coating composition comprising an at least partially unsaturated polymer which has been grafted with the addition polymer polyol.
An aqueous coating composition comprising a water-dissipatable polymer comprising a lipophilic polymer polyol having pendant sulfonic acid salt groups and a polyisocyanate curing agent, characterized in that said pendant sulfonic acid salt groups are of the following formula
- wherein,
- R1 is hydrogen,
- R2 is C2 alkylene, and
- M is a cation,
- said sulfonic acid salt groups present in an amount sufficient to render said lipophilic polymer polyol water-dissipatable, and
- said sulfonic acid salt groups provided by amino ethane sulfonic acid salts.
Dependencies are inferred from the claim text.