Patent · US Active

Laser markable compositions, articles and documents

US10144238B2 · kind B2 · utility

0Cited by

1References

14Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Dirk Kokkelenberg · Sint-Niklaas, BE
Lionel Petton · Mortsel, BE
Johan Loccufier · Zwijnaarde, BE
Fabienne Goethals · Mortsel, BE

Key dates

Filing date	May 17, 2016
Grant date	Dec 4, 2018
Priority date	—
Expiry date	May 17, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB42D25/387
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A laser markable composition includes (a) an aqueous medium; (b) a leuco dye; (c) an optothermal converting agent; and (d) a color developing agent, characterized in that the color developing agent is a polymer particle capable of forming an acid upon exposure to heat.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.