Production of potable liquids
First Claim
1. A device for producing potable liquid, said device comprising a water-absorbing solute encapsulated by a non-porous, water-permeable polymer membrane, wherein said membrane has a moisture vapor transmission rate by ASTM Method E96BW greater than 100 g/square meter/day at 1 mil thickness, a dry tensile strength of greater than 500 psi, and a permeability to said solute of less than 10-3 cm2/sec, and wherein said solute is capable of providing said device with a pressure of approximately 0.1 psi or more for a period of at least 24 hours.
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Accused Products
Abstract
Water-desalination and/or water purification devices. Alternatively, devices that are implantable in animal bodies, possibly configured as self-inflating spinal disc prostheses. The devices include specified types of water-absorbing solute encapsulated by non-porous, water-permeable polymer membranes having specified properties. Also, methods of using the devices in biomedical applications or water treatment.
21 Citations
5 Claims
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1. A device for producing potable liquid, said device comprising a water-absorbing solute encapsulated by a non-porous, water-permeable polymer membrane,
wherein said membrane has a moisture vapor transmission rate by ASTM Method E96BW greater than 100 g/square meter/day at 1 mil thickness, a dry tensile strength of greater than 500 psi, and a permeability to said solute of less than 10-3 cm2/sec, and wherein said solute is capable of providing said device with a pressure of approximately 0.1 psi or more for a period of at least 24 hours.
Specification