Patent · US Active

Photopolymer compositions for thermostable photopolymers in the visible spectral range

US12406696B2 · kind B2 · utility

0Cited by

1References

17Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Lena Nault · Cologne, DE
Thomas Roelle · Leverkusen, DE
Christel Manecke · Hürth, DE
Richard Meisenheimer · Cologne, DE
Friedrich-Karl Bruder · Krefeld, DE

Key dates

Filing date	Feb 15, 2023
Grant date	Sep 2, 2025
Priority date	—
Expiry date	Feb 15, 2043

Classification

Technology area (CPC G)Physics
CPC primaryG11B7/24044
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Photopolymer compositions include a) matrix polymers, b) writing monomers, c) at least one photoinitiator system, d) optionally at least one non-photopolymerisable component, e) optionally catalysts, radical stabilisers, solvents, additives and other auxiliary and/or additional materials. The at least one photoinitiator system c) consists of at least one colouring agent and at least one coinitiator. At least one of the colouring agents has a structure according to formula (II), and the at least one coinitiator has a calculated oxidation potential (E); determined according to the formula (1).

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