Polymer compositions stabilized with organopolysulfides
AssigneeArkema Inc.
InventorsGeorge Charles Fortman, Jonathan Pearce STEHMAN, Stephanie Christina VRAKAS, Kurt WOOD
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Abstract
Organopolysulfides such as organodisulfides, organotrisulfides and/or organotetrasulfides are useful stabilizers for polymer compositions, wherein the tendency of a polymer to degrade when exposed to environmental conditions such as heat, light and oxygen may be ameliorated by the incorporation of one or more of such organopolysulfides, optionally together with one or more additional stabilization additives such as a hindered phenol antioxidant, phosp(on)ite stabilizer or hindered amine light stabilizer.
Claims30
A stabilized polymer composition comprised of at least one polymer and an organopolysulfide stabilizer component comprised of at least one organopolysulfide selected from the group consisting of organodisufides, organotrisulfides, and organotetrasulfides.
The stabilized polymer composition of claim 16, wherein the at least one thiuram polysulfide is a tetraalkyl thiuram disulfide.
A method of stabilizing a polymer, comprising combining the polymer with an organopolysulfide stabilizer component comprised of at least one organopolysulfide selected from the group consisting of organodisulfides, organotrisulfides and organotetrasulfides.
A stabilizer composition comprising i) an orgariopolysulfide stabilizer component comprised of at least one organopolysulfide selected from the group consisting of organodisulfides, organotrisulfides, and organotetrasulfides and ii) one or more additional additives selected from the group consisting of hindered phenol antioxidants, phosph(on)ite stabilizers and hindered amine light stabilizers.
Dependencies are inferred from the claim text.