Curing of butyl rubber

Details Curing of butyl rubber Curing of butyl rubber

C - Chemistry, Metallurgy

08

L

C08L 23/22 (2006.01) C08J 3/24 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2258472

Butyl rubber formulations cured with polycyclic phenol-formaldehyde resins having dimethylene ether bridges and methylene bridges, wherein the molar ratio of dimethylene ether bridges to methylene bridges is less than about 2.5:1, display improved heat ageing characteristics.

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