METHOD OF PROTECTION OF VALUABLE PAPER AGAINST IMITATION Russian patent published in 1995 - IPC

Abstract RU 2046721 C1

FIELD: chemical technology. SUBSTANCE: polygraphic imprint is prepared using printing dye. Dye has, wt.-% glyptal drying oil 58-64; glycerol 12-14; rhodamine base C 17-19; НПАВ ОП-10 7-9. Polygraphic imprint is laminated with transparent stick film. Glue layer of stick film is formed by pouring on the emulsion transparent film. Glue layer has, wt.-% 10% solution copolymer of vinyl acetate, butyl acetate and acrylic acid (Acrylate 45K) in toluene 52-44; 2.5% aqueous solution of melamine-formaldehyde hydrochloride (M-76) 42-44, and emulsifier ОП-10 3-4. EFFECT: improved method of protection.

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RU 2 046 721 C1

Authors

Shevchenko A.V.

Shchegol'Kova A.L.

Birjukova L.A.

Bobrov Ju.A.

Dunjatkin E.M.

Kudrjavtsev V.F.

Dates

1995-10-27Published

1993-07-26Filed