Removable coatings which prevent penetration from felt tip marki

Details Removable coatings which prevent penetration from felt tip marki Removable coatings which prevent penetration from felt tip marki

1979-03-19

1980-12-23

Silverberg, Sam

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

427154, 260 296TA, 260 285R, 260 285AV, 134 4, 134 42, 252156, B32B 2700

Patent

active

042411416

ABSTRACT:
A method for protecting painted and other surfaces from being permanently marked by graffiti and particularly markings of flexible tip permanent marking pens comprising coating the surface with a removable composition consisting essentially of from 10 to 35% by weight of a polymer having a monomer content of from 25-70% by weight of a hard monomer, 15-50% by weight of a soft monomer, and 15-30% by weight of an acid monomer, the polymer having been solubilized with sodium hydroxide, potassium hydroxide, or mixtures thereof, from 0-15% of a potassium or sodium salt of a maleic anhydride adduct with a mixed alpha olefin having chain lengths of more than 30 carbon atoms, from 0 to 2% of a coalescing solvent selected from the group consisting of diethylene glycol monoethyl ether, diethylene glycol monobutyl ethyl and mixtures thereof; from 0 to 3% of defoamers, leveling agents, and mixtures thereof; and 90 to 45% by weight water, the composition having an MFT of less than 30.degree. C. and a pH of from 7.0 to 10.0 and allowing the coating to dry on the surface to be protected.

REFERENCES:
patent: 2606165 (1952-08-01), Chapin
patent: 2889299 (1959-06-01), Ritson
patent: 3467610 (1969-09-01), Fiarman
patent: 3503916 (1970-03-01), Warson
patent: 3697466 (1972-10-01), Sullivan
patent: 4064092 (1977-12-01), Burroway
Vandl Guard-ER, SP-546.

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