METHODS OF FLUID IRRADIATION USING ULTRAVIOLET REFLECTING COMPOSITIONS
First Claim
1. A method of irradiating a fluid, the method comprising the step of irradiating the fluid with ultraviolet radiation reflected from an ultraviolet reflective surface formed at least in part from a thermoplastic material containing from about 0.5% to about 5% ultraviolet reflective microparticles.
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Accused Products
Abstract
Thermoplastic compositions that reflect ultraviolet light are provided herein, along with articles of manufacture and methods of fluid purification using the same. The thermoplastic compositions preferably comprise a suitable thermoplastic material and microparticles of UV reflective material, such as aluminum or stainless steel. The thermoplastic compositions are useful, for example, in forming articles of manufacture comprising a UV reflective surface that are suitable for use in a water treatment system in connection with a UV light source.
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Citations
20 Claims
- 1. A method of irradiating a fluid, the method comprising the step of irradiating the fluid with ultraviolet radiation reflected from an ultraviolet reflective surface formed at least in part from a thermoplastic material containing from about 0.5% to about 5% ultraviolet reflective microparticles.
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11. A method of irradiating a liquid including water, the method comprising the steps of:
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a. irradiating the liquid with ultraviolet radiation reflected from an ultraviolet reflective surface formed at least in part from a thermoplastic material containing from about 0.5% to about 5% ultraviolet reflective microparticles; and
b. contacting the liquid with the thermoplastic material. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of purifying a fluid, the method comprising the step of irradiating the fluid with an ultraviolet radiation at a dose of about 15 to 50 mW-sec/cm2, the ultraviolet radiation including ultraviolet radiation at a wavelength of 254 nm reflected from an ultraviolet reflective surface formed at least in part from a thermoplastic metal-polymer composite material containing from about 0.5% to about 5% ultraviolet reflective metal microparticles having an average size of about 15 μ
- m to 55 μ
m. - View Dependent Claims (19, 20)
- m to 55 μ
Specification