Patent · US Expired

Flexographic ink containing a polymer or copolymer of a 3,4-dialkoxythiophene

US6890584B2 · kind B2 · utility

11Cited by

32References

28Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Luc Leenders · Herentals, BE
Eddie Daems · Herentals, BE
Frank Louwet · Diepenbeek, BE
Rafael P. Samijn · Wilrijk, BE
Jean-Pierre Tahon · Langdorp, BE
Roger Van den Bogaert · Schoten, BE

Key dates

Filing date	Jun 20, 2002
Grant date	May 10, 2005
Priority date	—
Expiry date	Jun 20, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH10K71/611
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A non-dye containing flexographic ink containing a polymer or copolymer of a 3,4-dialkoxythiophene in which the two alkoxy groups may be the same or different or together represent an optionally substituted oxy-alkylene-oxy bridge, a polyanion and a latex binder in a solvent or aqueous medium, characterized in that the polymer or copolymer of a 3,4-dialkoxythiophene is present in a concentration of at least 0.1% by weight in the ink and that the ink is capable of producing a colorimetrically additive transparent print; a method of preparing the flexographic ink; and a flexographic printing process therewith.

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