Permanent hydrophobic and oleophotic modification for polymer surfaces and process of making same
OwnerRichard Witzko, Wolfgang Burger +3inventors
InventorsRichard Witzko, Wolfgang Burger, Gudrun Petzold, Klaus Lunkwitz, Heide-Marie Buchhammer
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Abstract
The invention concerns a thin film of a permanent hydrophobic and optionally oleophobic finish for polymer surfaces. The film is formed from at least one layer of a water-soluble polycation and cationic synthetic resin. For further improvement of the oleophobic and permanent hydrophobic properties the film can additionally contain a long-chain surfactant or an alkyl-substituted polyanion.
Claims3
A treated material selected from fiber, textile, polymer or membrane consisting essentially of said material and a layer on said material of a complex of a water-soluble-polycation selected from the group consisting of polyallylamine hydrochloride and polyethyleneimine, and a surfactant that is an aliphatic-unbranched fluorinated surfactant that has a carbon chain greater than 6 carbons, said complex forming an olephobic coating on said material.
Dependencies are inferred from the claim text.