Initiators for cationic polymerization

US6162881A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Lothar Schön · Neunkirchen, DE
• Wolfgang Rogler · Erlangen, DE
• Volker Muhrer · Fürth, DE
• Manfred Fedtke · Merseburg, DE
• Andreas Palinsky · Garbsen, DE

Key dates

• Filing date: Jun 26, 1998
• Grant date: Dec 19, 2000
• Expiry date: Jun 26, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03F7/0045
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

New initiators which are suitable for cationic polymerization have the following structure: ##STR1## such that following apply: R.sup.1 and R.sup.2 are alkyl or cycloalkyl or they, together with the S atom, form a heterocyclic ring, PA1 R.sup.3 is H or alkyl, PA1 R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are H, alkyl, or alkoxy, PA1 X.sup.-- is a non-nucleophilic anion. PA1 Reaction resin mixtures with initiators of this type contain, in addition to a cationically polymerizable monomer and/or oligomer, 0.01 to 10% by mass of the initiator.