The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 1987
Filed:
Mar. 05, 1986
Applicant:
Inventor:
Hans R Lambert, Askim, SE;
Assignee:
Astra Meditec Aktiebolag, , SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M / ; A61M / ; A01N / ;
U.S. Cl.
CPC ...
604265 ; 427-2 ; 4274121 ; 4274125 ; 4284237 ; 4284242 ; 4284244 ; 523105 ; 523113 ;
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 0.5 to 50% of polyvinylpyrrolidone 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.