B - Operations – Transporting – 05 – D
Patent
B - Operations, Transporting
05
D
117/18, 283/5
B05D 5/06 (2006.01) G09F 3/10 (2006.01)
Patent
CA 1087467
ABSTRACT OF THE DISCLOSURE The invention is a process for rendering at least part of a surface phosphorescent. The process involves applying to the surface a composition comprising a solution of a phosphorescence activator and a soluble precon- densate. The precondensate is obtained by a reaction between formaldehyde and an amino compound, is capable of further reaction in the absence of the phosphorescence activator to form an insoluble condensation product that does not substantially absorb ultraviolet radiation at any wavelength at which the phosphorescence activator substantially absorbs ultraviolet radia- tion and is capable of such further reaction in the presence of the phos- phorescence activator in the amount present in the solution to form a phos- phorescent insoluble condensation product. By such further reaction there are formed in situ on the surface phosphorescent insoluble condensation products.
335451
Ferro Berkeley M.
Spratling Rodney E.
Walker Aubrey D.
Fetherstonhaugh & Co.
Post Office (the)
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