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1. Triethylsilane reacts with alkyl and aryllithium compounds in diethyl ether to give tetrasubstituted silanes.2. No reaction occurs between triethylsilane and propyllithium or butylsodium in low-boiling petroleum ether.3. Triethylsilane and ethanol in the presence of lithium ethoxide give ethoxytriethylsilane.4. Ethyldichlorosilane has been prepared by direct action of ethyl chloride on copper silicon.

Figure 1.Cure rate of Luperco 230.XL and Di-Cup at 300°F. allowed-for example, for a peroxide with a half life of 5 minutes at 300°F ., rubber would be fully cured in 30 to 40 minutes. At higher temperatures, correspondingly less time would be required to reach optimum cure.Figure 1 illustrates cure curves for Luperco 230-XL and dicumyl peroxide for ethylene-propylene rubber. At 300°F. Luperco 230-XL attains optimum cure in about 20 minutes, while dicumyl peroxide requires about 45 minutes. This permits shorter cure cycles or lessens the heat requirements of cure equipment without sacrificing time. The resulting cures have low residual odor in both sulfur and sulfur-free systems.Work is in progress on the use of Luperco 230-XL in ethvlenepropvlene terpolymer (EPT) rubbers. Preliminary data indicate that Luperco 230-XL produces faster cures with better compression set than found with conventional cure systems.Luperco 230-XL has a wide operating temperature range, curing equally well at 300°F. for 20 minutes, 340°F. for 6 minutes, and 400°F. for 1 minute or less.