METHOD FOR GIVING ORGANIC FUNCTIONAL GROUP ON THE SURFACE OF FLUOROPOLYMER BY INTRODUCTION OF CARBOXYLIC ACID-DERIVED ORGANIC FUNCTIONAL GROUP WITH ULTRAVIOLET RAY IRRADIATION

• Main Authors: ICHINOSE NOBUYUKI, OKADA ATSUSHI, KASAI SHUNICHI, SUGIMOTO SHUNICHI
• Format: Patent
• Language: English
• Published: 30.01.1996
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PURPOSE:To give a fluroropolymer film a chemical affinity such as lipophilic properties through a specific process by introducing a carboxylic acid-derived organic functional group on the film surface with ultraviolet ray irradiation. CONSTITUTION:A fluoropolymer film is brought into contact with a carboxylic acid and irradiated on its surface with ultraviolet rays whereby organic functional groups, for example, alkyl groups originating from the carboxylic acid are introduced into the areas irradiated. As an example, a film made of perfluoroethylene-perfluoroalkoxy vinyl ether copolymer 3 is placed on a quartz base plate 2 and fixed to a Pyrex cell 5 and the cell is filled with an aqueous solution of a carboxylic salt such as sodium octanoate 6, and the film 3 is vertically irradiated with KrF laser 1 from the side of the quartz base plate 2. The thickness of the film is preferably less than 1mm in order to form a pattern using a photo mask.