Composição de tinta e processo para marcar invisivelmente um artigo

The present invention provides inks which contain a near infrared fluorophoric compound incorporated into a water-dissipatible polyester backbone. The inks of the present invention are preferably colorless or "invisible" but could be made slightly colored if desirable. Specifically, the in...

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Bibliographic Details
Main Authors JAMES JOHN KRUTAK, SR, ESCANO NELSON ZAMORA
Format Patent
LanguagePortuguese
Published 30.03.1999
Edition6
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
TYPEWRITERS
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Summary:The present invention provides inks which contain a near infrared fluorophoric compound incorporated into a water-dissipatible polyester backbone. The inks of the present invention are preferably colorless or "invisible" but could be made slightly colored if desirable. Specifically, the inks of the present invention comprise: A. between about 1 and 10 weight percent of at least one water-dissipatable polyester having from about 0.1 ppm by weight to about 10% by weight of a thermally stable near infrared fluorophoric compound copolymerized therein; B. between about 5 and 75 weight percent of at least aliphatic humectant; C. between about 0 and 15 weight percent of at least one lower aliphatic alcohol of no more than 3 carbon atoms; D. water and optionally up to about 2 weight percent of one or more additives; wherein the weight percentages of components A-D equal 100%.
Bibliography:Application Number: BR19969611165