Emulsion and cross-linkable compositions containing polycarbodimides
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorJames W. Taylor
Life of this patent
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Abstract
Disclosed are surface-active polycarbodiimides containing a hydrophilic portion and a hydrophobic portion joined through the reaction of a carbodiimide group with a reactive functional group. The surface-active polycarbodiimides may be linear or branched, monodisperse or polydisperse, but preferably are of the branched, monodisperse type. The surface-active polycarbodiimides are useful as surfactants, and are particularly useful as emulsifiers in cross-linkable, carboxyl-containing resin systems, such as aqueous latexes.
Claims6
An emulsion comprising an admixture in an aqueous medium of:
- (a) a hydrophobic polycarbodiimide and
- (b) a surface-active polycarbodiimide of the formula:
- R--X--R'
- wherein R is a residue of a hydrophobic organic compound containing at least two carbodiimide groups;
- R' is a residue of a hydroxyl-containing, alkoxy-capped poly(alkylene oxide)-based surfactant having at least one functional group capable of reacting with a carbodiimide group and X is a group formed by the reaction of a carbodiimide group and said functional group.
A cross-linkable composition comprising an admixture of:
- (a) an emulsion of a carboxyl containing resin or neutralized, carboxylated, water-soluble organic resin, and
- (b) a surface-active polycarbodiimide of the formula:
- R--X--R'
- wherein R is a residue of a hydrophobic organic compound containing at least two carbodiimide groups;
- R' is a residue of a hydroxyl-containing, alkoxy-capped poly(alkylene oxide)-based surfactant having at least one functional group capable of reacting with a carbodiimide group and X is a group formed by the reaction of a carbodiimide group and said functional group, and/or
- (c) an emulsion comprising an admixture, in an aqueous medium of:
- (i) a hydrophobic polycarbodiimide, and
- (ii) a surface-active polycarbodiimide of the formula:
- R--X--R'
- wherein R is a residue of a hydrophobic organic compound containing at least two carbodiimide groups;
- R' is a residue of a hydroxyl-containing, alkoxy-capped poly(alkylene oxide)-based surfactant having at least one functional group capable of reacting with a carbodiimide group and X is a group formed by the reaction of a carbodiimide groups and said functional group.
Dependencies are inferred from the claim text.