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US 4,820,863 AGranted
Surface active polycarbodiimides
AssigneeUnion Carbide 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.
Claims3
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 an organic compound having a hydrophilic segment and at least one functional group capable of reacting with a carbodiimide group;
- and X is a group formed by the reaction of a said carbodiimide group with a said functional group;
- wherein R' is a residue of a hydroxyl-containing poly(alkylene oxide)-based surfactant and wherein the poly(alkylene oxide)-based surfactant is alkoxy-capped.
2 more elements
Dependencies are inferred from the claim text.