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2 294 949

(13)

(51)

IPC

C09D11/00(2006-01-01)

B41M3/14(2006-01-01)

(21) (22)

Application

2005141163/04, 2005-12-28

(24)

Start date

2005-12-28

(22)

Actual filing date

2005-12-28

(45)

Published

2007-03-10

(72)

Inventor

Petrunin Vadim FedorovichShljaposhnikova Tat'Jana VladimirovnaPopov Viktor VladimirovichChulkin Mikhail LeonidovichKorovin Sergej AleksandrovichFedotov Andrej Vjacheslavovich

(73)

Holder

Moskovskij Inzhenerno-Fizicheskij Institut Universitet)

PRINTING INK FOR PROTECTION OF PRODUCTS AGAINST FALSIFICATION Russian patent published in 2007 - IPC C09D11/00 B41M3/14

Abstract RU 2294949 C1

FIELD: printing arts; printing inks for securities; protection against falsification.

SUBSTANCE: proposed printing ink contains pigment possessing protective properties, binder and thinner; pigment contains ultra-dispersed powder of rare-earth ferrite-garnet selected from group including Y₃Fe₅O₁₂, Ln₃Fe₅O₁₂, Y_xLn_3-xFe₅O₁₂, where Ln is rare-earth element, 0≤x≤3, Y_3-xBi_xFe₅O₁₂, where 0≤x≤2 with sizes of crystallites not exceeding 100 nm in the amount not exceeding 85% of weight of ink. Optical characteristics are extended within 380-750 nm and infrared transparence is increased within 0.74-3.0 mcm.

EFFECT: enhanced identification due to magnetic properties.

8 dwg, 1 tbl, 3 ex

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RU 2 294 949 C1

Authors

Petrunin Vadim Fedorovich

Shljaposhnikova Tat'Jana Vladimirovna

Popov Viktor Vladimirovich

Chulkin Mikhail Leonidovich

Korovin Sergej Aleksandrovich

Fedotov Andrej Vjacheslavovich

Dates

2007-03-10—Published

2005-12-28—Filed