Back to results
US 4,382,017 AGranted
Means and method for providing a non-freezing catalyst solution
OwnerCharles A. Robinson, Barnett J. Robinsoninventors
Life of this patent
Estimating the term…
Abstract
A non-freezing catalyst solution carries a platinum group metal compound admixed with an antifreeze compound which is blocked from reaction therewith by a blocking agent. The blocking agent is selected from the group consisting of hydrogen chloride and lithium chloride. All of the materials are soluble in solution at room temperature.
Claims2
A method of preventing unwanted precipitation of a stable aqueous catalyst solution comprising an admixture of a water soluble compound of platinum and chlorine in a catalytic amount, and an antifreeze compound selected from the group consisting of alcohol and glycols and mixtures thereof,
- said method comprising adding a chloride selected from the group consisting of hydrochloric acid, lithium chloride, sodium chloride and mixtures thereof to said compound of platinum or to said antifreeze compound prior to admixing said antifreeze compound and said platinum compound, and following said admixing,
- adding water to provide approximately 50% water by volume.
Dependencies are inferred from the claim text.