Eco-friendly cobalt polymer accelerator

Pergan GmbH launched at JEC Europe 2013 its Pergaquick CP, a reportedly nontoxic and nonhazardous cobalt polymer accelerator product line, as an alternative to cobalt octoate.

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Pergan GmbH (Bocholt, Germany, and Marshall, Texas) launched at JEC Europe 2013 its Pergaquick CP, a reportedly nontoxic and nonhazardous cobalt polymer accelerator product line, as an alternative to cobalt octoate (cobalt 2-ethylhexanoate), which has been classified as a carcinogenic chemical. Pergan says the new accelerators are based on a “forward-looking cobalt polymer.” The cobalt can be bound into a high-molecular-weight matrix called cobalt polymer. This decreases its bioavailability yet safeguards its curing performance. Moreover, cobalt polymer is exempt from registration, according to REACH, the European chemical regulatory agency. Even when REACH eventually addresses polymers, Pergan sees Pergaquick CP products as a long-term solution. According to Pergan’s six-month study, the new polymer accelerators can be replaced 1:1 (metal-to-resin ratio) in comparison to classic cobalt accelerators (the Pergaquick C product line). Several hundred curing tests have been done with ketone peroxides (MEKP, AHP, CUHP) and several common unsaturated polyester and vinyl ester resins. The dosage will be the same as that of comparable classic products. The exception is CP40, with a maximum of 4 percent cobalt, which must be converted by a factor of 2.5 because Pergaquick C100 has 10 percent cobalt.