Phenolic resin and battery separator impregnated therewith

Details Phenolic resin and battery separator impregnated therewith Phenolic resin and battery separator impregnated therewith

C - Chemistry, Metallurgy

08

K

319/49, 400/7313

C08K 5/04 (2006.01) H01M 2/16 (2006.01)

Patent

CA 1042584

ABSTRACT OF THE DISCLOSURE Battery separators comprising a cellulose substrate thoroughly impregnated with an admixture of resole resin and a phenolic anti-migratory agent. The resole resin is a one-stage resin with a for- maldehyde to phenol mol ratio between 1.6:1 and 2.8:1 and a molecular weight in the range of 130 to 300. After the cellulose substrate is impreg- nated with the admixture, it is heated to advance the resole to the infusible state. The substrate exhibits improved oxidation resistance in an acidic oxidation environment.

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