Separation of fluids using polyimidesiloxane membrane
AssigneeOccidental Chemical Corporation
InventorChung J. Lee
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Abstract
Disclosed is a method of separating a first fluid from a mixture with a second fluid by placing the mixture in contact with a polyimidesiloxane membrane. The first fluid preferentially passes through the membrane, thereby separating the fluids. The polyimidesiloxane can be blended with 40 to 99 weight percent polyetherketone. Also disclosed is a fluid separating module comprising a polyimidesiloxane membrane, means for placing a mixture of fluids in contact with only one side of the membrane, and means for collecting fluid that passes through the membrane.
Claims24
A method of separating a first fluid from a mixture with a second fluid, comprising placing said mixture on one side of a membrane which comprises a polyimidesiloxane, whereby one of said fluids preferentially passes through said membrane.
A method according to claim I wherein said first and second fluids are liquids.
A fluid separating module comprising
- (1) a membrane comprising polyimidesiloxane;
- (2) means for placing a mixture of fluids in contact with only one side of said membrane;
- and
- (3) means for collecting fluid that passes through said membrane.
A method of changing the ratio of the amounts of two fluids in a mixture comprising placing said mixture on one side of a polyimidesiloxane membrane which comprises the reaction product of a dianhydride, a siloxane diamine, and a non-siloxane diamine, whereby one of said fluids passes through said membrane preferentially to the other end of said fluids.
Dependencies are inferred from the claim text.