Thermocurable compositions

US5296567A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Dieter Baumann · Greven, DE
• Werner Margotte · Lupsingen, CH
• Beat Muller · Marly, CH

Key dates

• Filing date: Apr 6, 1992
• Grant date: Mar 22, 1994
• Expiry date: Apr 6, 2012

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01B3/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present document describes the use of an inhibitor for cationic polymerization as an additive to a thermocurable composition based on at least one cationically polymerizable organic material and an initiator for cationic polymerization in the form of an onium compound or a compound of the formula (I) EQU [M.sup.+n (L).sub.x ].sup.n+ nX.sup.- (I), in which n is 2 or 3, M is a metal cation selected from the group comprising Zn.sup.2+, Mg.sup.2+, Fe.sup.2+, Co.sup.2+, Ni.sup.2+, Cr.sup.2+, Ru.sup.2+, Mn.sup.2+, Sn.sup.2+, VO.sup.2+, Fe.sup.3+, Al.sup.3+ and Co.sup.3+, X.sup.- is an anion selected from the group comprising PF.sub.6.sup.-, AsF.sub.6.sup.-, SbF.sub.6.sup.-, BiF.sub.6.sup.-, derivatives of these anions in which at least one fluorine atom has been replaced by a hydroxyl group, and CF.sub.3 SO.sub.3.sup.-, or in which up to 50% of the anions X.sup.-, based on the total amount of anions, may be any desired anions, L is water or an organic .sigma.-donor ligand which contains, as bonding sites, one or more functional radicals selected from the group comprising --CO--, --CO--O--, --O--CO--O-- and --O-- and forms .sigma.-bonds with the central atom via the oxygen atom or ato…