Hydrophilic substrate and method of manufacturing the same

Details Hydrophilic substrate and method of manufacturing the same Hydrophilic substrate and method of manufacturing the same

1995-04-20

1997-05-13

Ryan, Patrick

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428325, 428375, 428392, 428367, 428447, 428457, 428435, 428688, B32B 900

Patent

active

056290888

ABSTRACT:
According to the invention, a durable hydrophilic absorbed film is formed on the surface of a substrate including metals, glass, plastics and the like in which the substrate has a surface layer containing hydroxyl groups or imino groups. The film is formed by covalently bonding chemical absorbents of silane groups containing a pluralilty of chloro groups to the substrate surfaces. The substrate 1 such as glass or nylon is dipped and held in a non-aqueous solution containing fluorocarbon groups and hydrocarbon groups containing chemical absorbents of silane groups containing a plurality of chloro groups including SiCl.sub.4, Cl.sub.3 SiOSiCl.sub.3, HSiCl.sub.3 or Cl.sub.3 SiOSiCl.sub.2 OSiCl.sub.3. After taking out the substrate 1 from the solution, drying it in a low moisture or substantially moistureless atmosphere to remove said non-aqueous solvents, the substrate is exposed to the air. A hydrophilic adsorbed ultra-thin film is thus formed by a dehydrochlorination reaction.

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WPIL, File Supplier, Derwent Publications, Ltd. London, GB; AN=90-294728 & JP-A-2 207 870 (Nitto Denko Corp.) Abstract.
WPIL, File Supplier, Derwent Publications, Ltd. London, GB; AN=86-193224 & JP-A-61 125 405 (Mitsubishi Rayon KK) Abstract.

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