Methods for protecting substrates from graffiti and for...

Details Methods for protecting substrates from graffiti and for... Methods for protecting substrates from graffiti and for...

2005-12-13

2005-12-13

Tsoy, Elena (Department: 1762)

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

C427S402000, C510S174000, C510S212000, C510S242000

Reexamination Certificate

active

06974605

ABSTRACT:
A system for protecting surfaces and facilitating the removal of unwanted substances therefrom is disclosed, the system including a polymeric coating having a low volatile organics content (VOC) which is safe for the environment, and a cleaner for application to the coating to remove material from the coating, such as graffiti. The coating may be either a water-based epoxy comprising a bisphenol A resin and polyamide resin, or an aliphatic urethane comprising a polymer having reactive sites which react with a isocyanate and an aliphatic isocyanate. The cleaner is suitable for removing all manner of epoxy and urethane based spray paints, indelible inks, industrial chemicals, and the like. The cleaner comprises N-methyl pyrrolidone in a concentration of fifty percent by weight or greater and a surfactant.

REFERENCES:
patent: 5910369 (1999-06-01), Macris et al.

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