Nouryon Butanox HBO-50 Methyl ethyl ketone peroxide in dimethyl phthalate 1338-23-4

Butanox HBO-50

Methyl ethyl ketone peroxide in dimethyl phthalate

CAS No. 1338-23-4

Physical form: liquid

Butanox® HBO-50 is a fast gelling MEKP.


Butanox® HBO-50 is a methyl ethyl ketone peroxide (MEKP) for curing unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures. The curing system Butanox® HBO-50/Cobalt Accelerator is particularly suitable for curing laminated resins and lacquers when a faster gelation and initial cure rate than Butanox® M-50 is required. In addition, in contrast to curing benzoyl peroxide/amine accelerators, light-resistant parts can be manufactured.

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