Title: Polythiol accelerated radiation crosslinking of olefinically unsaturated polymers

Abstract: Improved radiation vulcanization of elastomers is accomplished by incorporating into the elastomer composition a polythiol, bivalent metal oxide and an aliphatic acid. The polythiol is preferably a hydrocarbon thioether thiol and is normally liquid at room temperature with a molecular weight of at least 150, said metal oxide is preferably zinc oxide and said acid is preferably stearic acid; alternatively, the reaction product of said metal oxide and acid can be used e.g., zinc stearate at appropriately increased concentration.

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Inventors: Zapp, Robert L. (Hilton Head Island, SC, US)
Oswald, Alexis A. (Mountainside, NJ, US)

Application Number: 913821
Filing Date: 1978-06-08
Publication_date: 1979-03-13
Assignee:
Primary Class(es): 522/27 522/55, 522/56, 522/127, 525/332.6, 525/346, 525/372, 525/386
Other Classes:
US Patent Ref:

3338810	Aug, 1967	Warner	204/159.
3625925	Dec, 1971	Oswald et al.	204/159.
3662023	May, 1972	Kehr et al.	260/858.
3700574	Oct, 1972	Kehr et al.	204/159.
3725229	Apr, 1973	Kehr et al.	204/159.
3843502	Oct, 1974	Pearson et al.	204/159.
3864229	Feb, 1975	Zapp et al.	204/159.
4094757	Jun, 1978	Zapp et al.	204/159.

Other Refs:
Primary Examiner: Turer, Richard B.
Assistant Examiner:
Attorney: Cohen; Harvey L.