METHOD FOR FORMING HYDROPHILIC COATING FILM ON POLYMERIC SUPPORT AND ARTICLE HAVING SURFACE COATED THEREBY

• Main Authors: KLEE DORIS DR, LORENZ GUENTER DR, ANDERS CHRISTINE DR, HOECKER HARTWIG PROF DR
• Format: Patent
• Language: English
• Published: 03.03.1998
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING-UP

PROBLEM TO BE SOLVED: To form a hydrophilic coating film on a polymeric support. SOLUTION: A hydrophilic vinyl monomer is grafted onto the surface of a polymeric support by radiation-induced polymerization. Advantageously, the vinyl monomer has a water solubility of at least 20g/l at 20 deg.C. The surface of the support is activated by using ultraviolet rays having a wavelength region of 100-400nm, a high-frequency plasma, or a microwave plasma. Advantageously, the grafting is induced by using ultraviolet rays having a wavelength region of 260-500nm. The support coated with a hydrophilic coating film is suitable for engineering, medical or biotechnological purposes.