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Application filed by Du PontfiledCriticalDu Pont
Priority claimed from EP84307627Aexternal-prioritypatent/EP0180671B1/en
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Publication of ATE37488T1publicationCriticalpatent/ATE37488T1/en
A protective garment or waterproof tent, shelter or tarpaulin is formed at least partly from a composite fabric contg. a continuous film of a highly fluorinated ion exchange polymer. The polymer has sulphonic acid metal salt functional groups, the metal having valency 2 to 4, and has at least one F atom attached to each C atom to which the functional gp. is attached. The polymer has equiv. wt. of 2000 or less.