Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation is chemically inert or of stated...
Patent
1995-09-07
1997-11-11
Lee, Helen
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating or impregnation is chemically inert or of stated...
442417, D04H 158
Patent
active
056857551
ABSTRACT:
A bonded, non-asbestos chlor-alkali diaphragm comprising one or more water-wettable materials and one or more chemically-resistant materials, which is characterized by having a Macmullin number and average diaphragm thickness such that the product of these is between about 5 and about 30 millimeters when the average diaphragm thickness is measured in millimeters, and by a median pore size between about 0.1 microns and about 1 micron, wherein one or more of the chemically-resistant materials is or are coated with a durable, adherent coating of an ion-containing polymer which is bonded into the diaphragm on such materials.
REFERENCES:
patent: 4853101 (1989-08-01), Hruska et al.
Aikman, Jr. Robert E.
Gross, Sr. John W.
Martin Charles W.
Zabasajja John N.
Lee Helen
The Dow Chemical Company
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