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RUBBER CHEMICALS-PEROXIDES-

AKROCHEM

PEROXIDE COMPARISON-HALF-LIFE and CURE EQUIVALENCY-

Akrochem Chemical Active Benzene Half-Life Temp C *Relative Equal

Product Type Peroxide 10hr 1hr 1min State-of-Cure v. BC-99%

2,5 Tri-85 2,5-dimethyl-2,5- 85% 128 148 195 0.50Di-(t-butylperoxy)

hexyne-32,5 Tri-45 2,5-dimethyl-2,5- 45% 128 148 195 1.15 Di-(t-butylperoxy) hexyne-3

DDPH 2,5-dimethyl-2,5- 100% 125 143 188 0.78Di-(t-butylperoxy)

hexane

DDPH-50 2,5-dimethyl-2,5- 50% 125 143 188 1.55 Di-(t-butylperoxy) hexane

VCP a,a'- bis-(t-butyl 97% 124 142 183 0.62peroxy)diisopropyl

benzene

VC-40C a,a'- bis-(t-butyl 40% 124 142 183 1.55VC-40K peroxy)diisopropyl

benzene

DCP dicumylperoxide 99% 116 134 172 *1.00

DC-40C dicumyl peroxide 40% 116 134 172 2.50DC-40K

TBPB-40 t-butyl 50% 104 124 165 1.30peroxybenzoate

TMC-40 1,1-bis(t-butyl 40% 96 115 147 3.10peroxy)-3,3,5 tri-

methylcyclohexane

DDCBP-50 Di (2,4-Dichloro- 50% 54 72 110 2.80benzoyl) peroxide

t-peroxide cure equivalency

jh 0504