(Super) hydrophobic material and coating
AssigneeUCL Business PLC
InventorsManish Kumar Tiwari, Graham Leslie Wright, Tanmoy Maitra
Life of this patent
Estimating the term…
Abstract
The invention provides compositions for forming a hydrophobic or superhydrophobic material, the composition comprising a polyol component having at least two hydroxyl groups per molecule on average; an isocyanate component having at least two isocyanate groups per molecule on average; a single population of nanoparticles having a particle size less than 1 pm; and a solvent; wherein the population of nanoparticles represents at least 5 wt. % of the total of the polyol component, isocyanate component, and population of nanoparticles. The invention also provides hydrophobic or superhydrophobic materials formed from the compositions of the invention, and methods or kits for forming such materials.
Claims16
A composition for forming a hydrophobic material, the composition comprising a polyol component having at least two hydroxyl groups per molecule on average;
- an isocyanate component having at least two isocyanate groups per molecule on average;
- a single population of nanoparticles having a particle size in the range 10-500 nm;
- and
- a solvent;
- wherein the population of nanoparticles represents above 20 wt. % of the total of the polyol component, isocyanate component, and population of nanoparticles;
- wherein the population of nanoparticles has a unimodal particle size distribution;
- wherein the population of nanoparticles satisfies the relationship ((D90−D10)/D50)<1.5;
- and
- wherein the nanoparticles in said population of nanoparticles are not surface modified.
Dependencies are inferred from the claim text.