Surface tension reduction with N,N,N'-trialkkyl ureas
AssigneeAir Products and Chemicals, Inc.
InventorsJohn Anthony Marsella, Kevin Rodney Lassila, Robert Lee Fowlkes
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Abstract
This invention provides water-based compositions, particularly coating, ink, adhesive, fountain solution, agricultural and photoresist developer compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain trialkyl urea compounds of the structure where R1 and R2 are C2 to C6 alkyl groups, R3 is methyl or ethyl, and the total number of carbon atoms in R1, R2 and R3 is from 6 to 14.
Claims23
In a method for applying a coating of a water-based composition to a surface to partially or fully coat the surface, the composition containing an inorganic or organic compound and an effective amount of a surfactant for reducing the dynamic surface tension of the composition, the improvement which comprises employing as the surfactant a trialkyl urea of the structure
- where R1 and R2 are C2 to C6 alkyl groups, R3 is methyl or ethyl, and the total number of carbon atoms in R1, R2 and R3 is from 6 to 14.
An aqueous composition comprising in water an inorganic compound which is a mineral ore or a pigment or an organic compound which is a pigment, a polymerizable monomer, an oligomeric resin, a polymeric resin, a detergent, a herbicide, an insecticide, or a plant growth modifying agent and an effective amount of a trialkyl urea for reducing the dynamic surface tension of the composition, the trialkyl urea having the structure
- where R1 and R2 are C2 to C6 alkyl groups, R3 is methyl or ethyl, and the total number of carbon atoms in R1, R2 and R3 is from 6 to 14.
Dependencies are inferred from the claim text.