Soft, fatigue resistant elastomeric articles

Details Soft, fatigue resistant elastomeric articles Soft, fatigue resistant elastomeric articles

C - Chemistry, Metallurgy

08

L

400/1134, 400/43

C08L 7/00 (2006.01) C08L 23/00 (2006.01) C08L 23/18 (2006.01) C08L 47/00 (2006.01) C08L 75/00 (2006.01)

Patent

CA 1187230

ABSTRACT OF THE DISCLOSURE A soft, fatigue resistant vulcenizate adapted for transmitting load between moving mechanical parts comprising (a) 100 parts by weight of crosslinked elastomer, (b) a fatigue enhancing amount of substantially internally saturated, substantially linear polymer that (i) is made from monomers consisting essentially of isobutylene, (ii) is a strain crystallizable, elastic solid at 20°C and (iii) has a viscosity average molecular weight (Flory) above about 1.3 million, (c) about 5 to 200 parts by weight particulate, the elastomer being crosslinked with (d) a curative in an amount sufficient to crosslink the elastomer, wherein the polymer of (b) is dispersed throughout the elastomer of (a) in a discrete microscopic phase.

386877

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