Patent · US Active

Sulphonium salt photoinitiators

US8012672B2 · kind B2 · utility

2Cited by

5References

18Claims

0Family size

Assignee

BASF SE

Inventors

Pascal Hayoz · Therwil, CH
Jean-Luc Birbaum · Fribourg, CH
Stephan Ilg · Giebenach, CH

Key dates

Filing date	Sep 24, 2007
Grant date	Sep 6, 2011
Priority date	—
Expiry date	May 15, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG03F7/038
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Compounds of the formula (I), wherein L1, L2, L3 and L4 independently of one another are hydrogen or an organic substituent; R is for example C1-C20alkyl, C5-C12cycloalkyl, C2-C20alkenyl, substituted C1-C20alkyl; X is O, S, NRa or NCORa; Ra is for example hydrogen or C1-C20alkyl; and Y is an inorganic or organic anion; are suitable as photolatent acid generators.

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