Process for the preparation of a hydrophilic coating

Details Process for the preparation of a hydrophilic coating Process for the preparation of a hydrophilic coating

1983-04-21

1984-07-10

Silverberg, Sam

Coating processes

Medical or dental purpose product; parts; subcombinations;...

Particulate or unit-dosage-article base

428420, 4284231, 4284246, B23B 2706

Patent

active

044593171

ABSTRACT:
A process for coating a polymer surface with a hydrophilic coating with low friction in wet condition. The process comprises applying to the polymer surface a solution containing between 0.05 to 40% of a compound which comprises at least two unreacted isocyanate groups per molecule, evaporating the solvent, applying a solution containing between 0.05 to 50% of polyethylene oxide to the thus treated polymer surface and then evaporating the solvent of the last mentioned solution, and curing the coating at elevated temperature. The process is preferably carried out in the presence of a catalyst for the curing of isocyanate.

REFERENCES:
patent: 4232608 (1980-11-01), Wrightson

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