Title: Diaphragm having zirconium oxide and a hydrophilic fluorocarbon resin in a hydrophobic matrix

Abstract: Disclosed is a diaphragm having a porous, hydrophobic fluorocarbon matrix, an intermediate layer or film of a hydrophilic fluorocarbon resin on the surfaces of the matrix, and a hydrous oxide of zirconium contained in the void volumes of the matrix. The layer of the hydrous oxide of zirconium may also contain MgO.

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Inventors: Simmons, Robert B. (Norton, OH, US)

Application Number: 953133
Filing Date: 1978-10-20
Publication_date: 1979-10-09
Assignee: PPG Industries, Inc. (Pittsburgh, PA)
Primary Class(es): 204/295 204/296, 521/27
Other Classes:
US Patent Ref:

1942183	Jan, 1934	Muller	204/28.
2661288	Dec, 1953	Barbaras	92/21.
3056647	Oct, 1962	Amphlett	23/14.
3479266	Nov, 1969	Rajan et al.	204/295.
3479267	Nov, 1969	Rajan et al.	204/295.
3541030	Nov, 1970	Boies et al.	521/27.
3702267	Nov, 1972	Grot	204/295.
3703413	Nov, 1972	Arrance	136/6.
4032427	Jun, 1977	Kadija	204/295.
4089758	May, 1978	McAloon	204/98.
4120772	Oct, 1978	Kadija	204/295.

Other Refs:
Primary Examiner: Prescott, Arthur C.
Assistant Examiner:
Attorney: Goldman; Richard M.