Silsesquioxane photoinitiators

US8637585B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Markus Frey · Rheinfelden, CH
• Christophe Frossard · Granges-Paccot, CH
• Katia Studer · Rixheim, FR
• Karin Powell · Bad Kötzting, DE
• Jean-Luc Birbaum · Fribourg, CH
• Martin Muller · Berlin, DE

Key dates

• Filing date: Nov 24, 2009
• Grant date: Jan 28, 2014
• Expiry date: Mar 1, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/21
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Photoinitiator compounds comprising both a photoactive moiety and an amine functionality, bonded to a polyhedral oligomeric silsesquioxane, which photoinitiator is represented by formula (1) or (1′) wherein n is 2m; m is an integer of 2 to 30; the sum of n′+a is an integer 4-60; n′ is an even-numbered integer; a is an even- or uneven-numbered integer; and for example different A C1-C12alkyl, or a photoactive moiety Q1, or a group of formula (2); E for example is a direct bond, L is linear or branched C1-C3alkylene, preferably propylene; R1 and R2 for example are a photoactive moiety Q, or C2-20alkyl; Q is for example a group of formula (4); Z2 is for example C1-C6alkylene which is unsubstituted or substituted by one or more OR6; and R6, R12, R13 and R14 for example are hydrogen; are especially suitable as low-migrating photoinitiators.