D - Textiles – Paper – 06 – P
Patent
D - Textiles, Paper
06
P
8/3
D06P 3/24 (2006.01) B32B 17/10 (2006.01) D06P 3/26 (2006.01)
Patent
CA 1189655
Abstract of the Disclosure A method of tinting a sheet of transparent polyurethane comprising a coloring operation followed by a fixation operation. The aforesaid coloring operation is carried out through immersion of the polyurethane into a bath maintained under continuous agitation and formed of a dispersion of one or several colorants in an aqueous solution containing a surfacant or wetting agent, while the aforesaid fixation operation is carried out through rinsing in boiling aqueous solution of sodium alkyl sulfonate of the type known under the mark "teepol".? The application to a double or composite sheet preformed to a thin laminate, that is to say, one layer of a thermo- plastic polyurethane and one other layer of a thermosetting polyurethane. In a particularly useful embodiment of the invention the tinted polyurethane serves as a selective filter having almost zero transmission in the so-called cutoff range of wavelengths lying between about 350-560 nm. Eyeglasses made from such lenses are useful for victims of aphakia and retinitis pigmentosa.
415596
Goepfert Serge
Marsaud Serge G.
Renault Serge A.m.
Roger Francoise M.m.
Corning Glass Works
Gowling Lafleur Henderson Llp
LandOfFree
Method for tinting a sheet of polyurethane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for tinting a sheet of polyurethane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for tinting a sheet of polyurethane will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1303146