| http://www.w3.org/ns/prov#value | - The catalysts are a mixture of at least two free-radical peroxidic type materials comprising a primary low-temperature initiator having a 10-hour half-life temperature of between 60??? and 80??? C. and a secondary high-temperature initiator having a 10-hour half-life temperature of between 95??? and 110??? C. Thus, a mixture of benzoyl peroxide and t-butyl perbenzoate which have 10-hour half-life
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