Coating processes – Removable protective coating applied – Metal base
Patent
1979-03-27
1980-04-22
Silverberg, Sam
Coating processes
Removable protective coating applied
Metal base
134 4, 4284258, 428687, B65B 3302
Patent
active
041996208
ABSTRACT:
This invention is a method for forming a protective, strippable, elastomeric film on a highly reflective surface. The method is especially well suited for protecting diamond-machined metallic mirrors, which are susceptible not only to abrasion and mechanical damage but also to contamination and corrosion by various fluids. In a typical use of the invention, a diamond-machined copper mirror surface is coated uniformly with a solution comprising a completely polymerized and completely cured thermoplastic urethane elastomer dissolved in tetrahydrofuran. The applied coating is evaporated to dryness, forming a tough, adherent, impermeable, and transparent film which encapsulates dust and other particulates on the surface. The film may be left in place for many months. When desired, the film may be stripped intact, removing the entrapped particulates and leaving no residue on the mirror surface.
REFERENCES:
patent: 2802595 (1957-08-01), Veitch
Day Jack R.
Edwards Charlene C.
Hamel Stephen D.
Lewis Fred O.
Lupo R. V.
Silverberg Sam
The United States of America as represented by the United States
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