Elastomeric compound
AssigneeVeyance Technologies, Inc.
InventorsDouglas Bruce Wood, Thomas George Burrowes
Life of this patent
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Abstract
An elastomeric compound comprises 20-80 parts per hundred cross-linkable materials of liquid elastomer. The liquid elastomer has a complex dynamic viscosity less than 5 McP (5,000 N*s/m2) at a temperature between 20° C. and the maximum flow temperature TF, and the elastomeric compound the elastomeric material has a complex dynamic viscosity of less than 5 McP (5,000 N*s/m2) for at least 2 minutes at a maximum flow temperature TF.
Claims20
A method for preparing a vulcanizable elastomer composition comprising the steps of:
- (1) mixing a cross-linkable functionalized polyethylene with at least one cross-linkable liquid elastomer to form a non-reactive extrudant, wherein the mixing occurs at a temperature in the range of 10° F. above or below the melt point of the cross-linkable functionalized polyethylene, and wherein the non-reactive extrudant contains from 20 to 80 parts per hundred of the cross-linkable liquid elastomer, (2) extruding the non-reactive extrudant, and (3) mixing the extrudent with at least one curing agent, wherein the mixing is sufficient to form the vulcanizable elastomer, and wherein the vulcanizable elastomer has a complex dynamic viscosity of less than 5 McP (5,000 N*s/m2) for at least 2 minutes at a maximum flow temperature.
The method of claim I wherein the cross-linkable liquid elastomer is selected from the group consisting of polybutadiene rubber, nitrile rubber, hydrogenated nitrile rubber, styrene-butadiene rubber, neoprene rubber, butyl rubber, polyisoprene rubber, propylene rubber, carboxylated nitrile rubber, and EP(D)M rubber.
Dependencies are inferred from the claim text.