Catalysts and initiators for polymerization

Details Catalysts and initiators for polymerization Catalysts and initiators for polymerization

C - Chemistry, Metallurgy

08

F

C08F 4/00 (2006.01) C07F 5/02 (2006.01) C08G 59/68 (2006.01) C08G 85/00 (2006.01)

Patent

CA 2166535

Salts having a cationic portion of either a mono-, polyvalent metal center, onium salts or organometallic salts and a nonnucleophilic anion are useful as catalysts and initiators that may be photochemically or thermally-activated, and polymerizable compositions containing such catalysts and initiator salts and at least one of a cationic or free-radical addition polymerizable monomers, or catalyzed step-growth polymerizable monomers.

L'invention concerne des sels ayant une partie cationique constituée par un centre métallique monovalent ou polyvalent, des sels d'onium ou des sels organométalliques, dans lesquels l'anion est non nucléophile; ces sels sont utiles comme catalyseurs ou initiateurs qui peuvent être activés photochimiquement ou thermiquement. L'invention concerne également des compositions polymérisables contenant de tels sels catalyseurs et initiateurs et au moins un monomère polymérisable par addition suivant un mécanisme cationique ou radicalaire, ou un monomère polymérisable suivant un mécanisme de condensation.

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