Queen's University at Kingston

Greencentre Canada

Basf Coatings Gmbh

Dominik Wechsler

Rui Resendes

Philip G Jessop

Lam N Phan

Andrew J Carrier

Timothy S December

R Stephen Brown

Timothy James Clark

Brian Ernest Mariampillai

Charles Howard Honeyman

Adam Michael Ozvald

Sean M Mercer

Tobias Robert

Methods and systems for use of switchable water, which is capable of reversibly switching between an initial ionic strength and an increased ionic strength, is described. The disclosed methods and systems can be used, for example, in distillation-free removal of water from solvents, solutes, or solutions, desalination, clay settling, viscosity switching, etc. Switching from lower to higher ionic strength is readily achieved using low energy methods such as bubbling with C0, CSor COS or treatment with Bronsted acids. Switching from higher to lower ionic strength is readily achieved using low energy methods such as bubbling with air, inert gas, heating, agitating, introducing a vacuum or partial vacuum, or any combination or thereof.

Systems and methods for use of water with switchable ionic strength

Shelf-stable low temperature cure coating compositions that include a hydroxy-functional resin, a crosslinking agent, and a catalyst that does not catalyze the crosslinking reaction between hydroxy-functional resin and the crosslinking agent contained therein, but instead between a hydroxy-functional resin and a crosslinking agent contained in a different low temperature cure coating composition. In addition, low temperature cure composite coatings that include: a basecoat of a low temperature cure coating composition containing a first hydroxy-functional resin, a first crosslinking agent, and a first catalyst; and a topcoat containing a second hydroxy-functional resin, a second crosslinking agent, and a second catalyst, where the first catalyst migrates into the topcoat from the basecoat and catalyzes the reaction between the second hydroxy-functional resin and crosslinking agent, and the second catalyst migrates into the basecoat from the topcoat and catalyzes the reaction between the first hydroxy-functional resin and crosslinking agent.

One component, low temperature cure coating formed via a double layer curing mechanism

A solvent that reversibly converts from a hydrophobic liquid form to hydrophilic liquid form upon contact with water and a selected trigger, e.g., contact with CO, is described. The hydrophilic liquid form is readily converted back to the hydrophobic liquid form and water. The hydrophobic liquid is an amidine or amine. The hydrophilic liquid form comprises an amidinium salt or an ammonium salt.

Switchable hydrophilicity solvents and methods of use thereof

Growing community of inventors

Kingston, Canada

Dominik Wechsler