The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 1993
Filed:
Jun. 30, 1988
Reinhold Schwalm, Wachenheim, DE;
Andreas Boettcher, Nussloch, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Sulfonium salts of the general formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are aliphatic and/or aromatic radicals which may contain heteroatoms, or two of the radicals R.sup.1 and R.sup.3 are bonded to one another to form a ring, with the proviso that one or more of the radicals R.sup.1 to R.sup.3 contain one or more acid-cleavable groups, or one of the radicals R.sup.1 to R.sup.3 is bonded to one or more further sulfonium salt radicals, if desired via acid-cleavable groups, and X.sup..crclbar. is a non-nucleophilic counter-ion, are suitable as photoinitiators for cationic polymerization.