Spacer for electrically driven membrane process apparatus
First Claim
1. A spacer mesh configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising a plurality of strands consisting essentially of a polymer having a heat distortion temperature of at least 90°
- C. at 66 psi, and a melt flow index within the range of 3 g/10 min to 6 g/10 min, and being chemically stable at pH>
13 or pH<
2.
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Accused Products
Abstract
A spacer mesh is provided and is configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising a plurality of strands consisting essentially of a polymer having a heat distortion temperature of at least 90° C. at 66 psi, and a melt flow index within the range of 3 g/10 min to 6 g/10 min, and being chemically stable at pH>13 or pH<2. The spacer mesh includes a first plurality of spaced apart substantially parallel strand elements, and a second plurality of spaced apart substantially parallel strand elements, wherein the first plurality of strand elements and the second plurality of strand elements are connected to define a netting having a plurality of apertures, each of the apertures having a plurality of vertices defined by a pair of intersecting strands, and a distance between non-adjacent vertices in an aperture is less than 10/1000 of an inch.
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Citations
26 Claims
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1. A spacer mesh configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising a plurality of strands consisting essentially of a polymer having a heat distortion temperature of at least 90°
- C. at 66 psi, and a melt flow index within the range of 3 g/10 min to 6 g/10 min, and being chemically stable at pH>
13 or pH<
2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- C. at 66 psi, and a melt flow index within the range of 3 g/10 min to 6 g/10 min, and being chemically stable at pH>
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12. A spacer configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising:
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a spacer mesh including a plurality of strands consisting essentially of a polymer having a heat distortion temperature of at least 90°
C. at 66 psi, and a melt flow index within the range of 3 g/10 min to 6 g/10 min, and being chemically stable at pH>
13 or pH<
2; and
a perimeter surrounding the spacer mesh, said perimeter comprising a thermoplastic elastomer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A spacer mesh configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising a plurality of strands consisting essentially of a polymer having a heat distortion temperature of at least 90°
- C. at 66 psi, and a melt flow index within the range of 3 g/10 min to 6 g/10 min, and being chemically stable when in contact with the first or second ion conducting membranes.
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25. A spacer mesh configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising a plurality of strands consisting essentially of a halogenated polymer having a melt flow index within the range of 3 g/10 min to 6 g/10 min.
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26. A spacer mesh configured to separate a first ion conducting membrane from a second ion conducting membrane to define a space between the membranes, comprising:
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a first plurality of spaced apart substantially parallel strand elements; and
a second plurality of spaced apart substantially parallel strand elements;
wherein the first plurality of strand elements and the second plurality of strand elements are connected to define a netting having a plurality of apertures, each of the apertures having a plurality of vertices defined by a pair of intersecting strands, and a distance between non-adjacent vertices in an aperture is less than {fraction (10/1000)} of an inch.
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Specification