Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1976-08-13
1978-01-03
Marquis, Melvyn I.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 285B, 260 4243, 260 4244, 260 4245, 260 4575W, 260 4575R, 260 4585B, 260 4595H, C08L 9100
Patent
active
040665909
ABSTRACT:
In an exemplary embodiment a high temperature and oil resistant elastomer composition includes the peroxide-induced reaction product of, by weight, 100 parts ethylene-propylene-diene rubber, about 20 parts of a suitable crosslinking monomer, about 8 parts of a chlorinated organic material such as Chlorowax LV, about 10 parts of a suitable hindered phenolic antioxidant 10 to 15 parts zinc oxide and 5 to 8 parts magnesium oxide. The elastomer formulation may optionally contain suitable reinforcing and/or semireinforcing fillers and processing oils. A similar ethylene-propylene rubber formulation may be prepared. The resulting elastomer formulations have remarkable oil resistance and retain a significant elongation even after aging at 177.degree. C. (350.degree. F.) for 168 hours.
REFERENCES:
patent: 3882065 (1975-05-01), Snow, Jr. et al.
patent: 3988227 (1976-10-01), Eldred
Nordel Formulated for Maximum Heat Resistance, Elastomer Supplier Formulation, one page.
Hercules Peroxide Cured EPDM Formulations, one page.
Abu-Isa Ismat A.
Eldred Roger J.
Iobst Stanley A.
General Motors Corporation
Grove George A.
Marquis Melvyn I.
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