Patent ID: 11957805
Assignee: PHIEX TECHNOLOGIES, INC.
Field: Medical technology (Instruments)
Classification: CPC A  C | IPC A  C

Claim 0:
1. A method of making a light-activated powder for providing solid-state controlled release of chlorine dioxide, the method comprising:
admixing a light-activated catalyst, a base, sodium chlorite, and water to form an aqueous suspension, the aqueous suspension including sodium chlorite of 85-99% purity; and
spray-drying the suspension at an inlet temperature ranging from about 482 to about 537° C. (900 to 1000° F.) and an outlet temperature of not more than 143° C. (290° F.) to form a powder,
wherein:
the powder does not include sources of moisture that could initiate chlorine dioxide release,
the admixing and spray-drying steps are performed in darkness, and
when exposed to visible light, the powder is capable of generating the solid-state controlled release of chlorine dioxide from the powder in an amount effective for disinfection, without release of detectable amounts of chlorine gas, chlorates and/or chlorites.