Rubber compositions comprising a polymeric amine co-activator
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United States of America Patent
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Jan 17, 1995
Grant Date -
N/A
app pub date -
Jan 18, 1994
filing date -
Jan 18, 1994
priority date (Note) -
Expired
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Abstract
Vulcanizable rubber compositions are disclosed which contain co-activator of vulcanization which is a polymeric amine, that is, a hydrocarbon polymer with pendent alkyl amine groups. The co-activators impart increased rates of vulcanization with little decrease in scorch delay and very little increase in the modulus of the cured compositions. No increase in heat build-up or decrease in flex-fatigue life is shown. Typical polymers forming the backbone of the co-activators include EPDM rubber and polymers from butadiene or isoprene, with optional co-monomers.
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