Patent ID: 7252784

Claim:
A cyclic ketone peroxide formulation comprising: one or more crystallizing cyclic ketone peroxides; one or more co-crystallizing compounds selected from the group consisting of non-heteroatom-containing hydrocarbons, ester phosphates, dicyclohexylphthalate, methylpalmitate, α-naphtylacetate, β-naphtylacetate, phenylbenzoate, ethyl diphenylacetate, dimethyloxalate, trimethylene carbonate, pentamethylene carbonate, hexamethylene carbonate, methylacetyl salicilate, dimethyl phenylmalonate, methyl p-vinylbenzoate, methylhydrogen succinate, and mixtures thereof, in an amount of 0.1% to 10% by weight of the formulation and which solidify in said cyclic ketone peroxide formulation at a temperature above the crystallization temperature of the crystallizing cyclic ketone peroxide; and one or more conventional phlegmatizers.