Lupersol hexane

Method A Agitated Glass Ampoule. The bench scale apparatus developed for these runs consisted of a 12 mm O.D. glass ampoule suspended in a fluidized bed heater (Figure 1). Approximately 1 g of polypropylene pellets (Himont) were placed in the ampoule and preheated for 2 min. at 220°C. A 29 cm long screw with a pitch of 1 mm and a diameter of 6 mm driven at approximately 160 rpm was inserted into the ampoule. The appropriate amount of free-radical initiator, 2,5-dimethyl-2,5-bis(t-butyl peroxy) hexane (Lupersol 101, Lucidol), required for a 0.04 wt% initiator concentration was then injected into the sample... 

UnstabUized PP (Profax 6501, Himont) and LDPE (DYNH-1, Union Carbide). P-1 2,5-dimethyl-2,5-bis-(t-butylperoxy)hexane (Lupersol 101, Atochem) phenolic antioxidant (Cyanox 2246, American Cyanamid). 

Lupersol 10. See t-Butyl peroxyneodecanoate Lupersol 101. See 2,5-Dimethyl-2,5-di (t-butylperoxy) hexane Lupersol 230. See n-Butyl-4,4-bis (t-butyl peroxy) valerate Lupersol 575. See t-Amylperoxy 2-ethylhexanoate... 

Dimethyl-2,5-di (t-butylperoxy) hexane Esperal 120 Lupersol 101 Perhexa 25B Perhexa 25B-40 Polyvel CR-5 Polyvel CR-5P Polyvel CR-10 Polyvel CR-25 Trigonox 101 Varox DBPH Varox DBPH-50 Varox DBPH-50-HP 78-66-0... 

Polysiloxanes. Siloxane rubbers are readily cured by heating in the presence of an appropriate peroxide and the technology is well-established (26). Indeed, this crosslinking chemistry has recently been extended into ceramic applications (27). Vinyl-substituted siloxanes were found to be very effective binders for SiC powder. With only about 1 wt% 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane (Lupersol 101), the [(MeSiOi 5)o.5o(PhSiOi 5)0.25 (CH2=CHMe2SiOo.5)o.25] polysiloxane cured to an infusible solid after one hour at 180 C (27). Subsequent pyrolysis gave P-SiC, and dense ceramic monoliths could be prepared using these polymer systems as SiC binders. 

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