Highly reactive printing inks

Details Highly reactive printing inks Highly reactive printing inks

1995-06-06

1997-08-19

Berman, Susan W.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

522 75, 522 79, 522 81, 522 83, 522 95, 522 90, 522117, 522181, 522170, 522120, 522100, 522102, 523160, C03C 1700, C08F 250, C09D 1110

Patent

active

056589646

ABSTRACT:
A printing ink for the printing of security documents by the method of engraved steel die printing, having a viscosity of at least 1 Pa.multidot.s at 40.degree. C. under a shear of about 1000 sec.sup.-1, containing a binder matrix, a polymerization initiator for polymerizable matrix components, fillers and pigments, and the usual additives. The binder matrix contains at least one cationically polymerizable compound, modified to bring about the desired rheology of the ink, and the photoinitiator, activable by UV, heat and EB, is an onium salt capable of releasing a Lewis or Bronsted acid.
This ink has best and very rapid drying characteristics.

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