Method of hydrophilic coating of plastics

Coating processes – With post-treatment of coating or coating material – Chemical agent applied to treat coating

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427 2, 427340, 427399, 4274071, 4274072, 530356, B05D 304, B05D 312, B32B 712, A61K 3712

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active

050231146

ABSTRACT:
Plastics, particularly a method of hydrophilic coating of plastics, for example, a contact lens, with a lubricating and visually acute mucopolysaccharide film which is immobilized upon the surface of the plastic for the lifetime of the plastic. A preferred method includes first coating the plastic with an aqueous solution of a mucopolysaccharide, drying by applying a water-miscible solvent, then crosslinking and permanently immobilizing the first coating upon the plastic by applying a solution of catalyzed organic soluble aliphatic polyisocyanate.

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"Lens Implants for Cataracts are Offering More Protection", `Technology` column of The Wall Street Journal, Friday, Jun. 29, 1984, paragraph 9.
Astra Medic AG: PCT/SE83/00191: WO83/03977-"Articles Exhibiting a Biocompatible Surface Layer and Process for Providing Articles with Such a Surface Layer".

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