Stabilized polyketone polymer compositions
AssigneeShell Oil Company
InventorCarlton E. Ash
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Abstract
It is herein disclosed a process for stabilizing freshly prepared polyketone polymer comprising contacting the polymer with a sufficient quantity of a stabilizing agent such as a polyaromatic or hydroaromatic compound. The inventive process results in stabilized polyketone polymers having and exhibiting improved thermal oxidative stability properties. It is also disclosed a stabilized polymer composition comprising a major amount of a polyketone polymer and a minor amount of a polyaromatic or hydroaromatic compound.
Claims10
A stabilized polymer blend comprising a major amount of a linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon and in an amount sufficient to inhibit the polymer's thermal oxidative degradation a stabilizing agent selected from the group consisting of polyaromatic, polynuclear aromatic, and hydroaromatic compounds of the formula ##STR4## wherein R is an aromatic and/or nonaromatic carbon ring assembly containing 1-20 rings with at least 3 carbon atoms per ring;
- the rings may be bonded to each other in such a way that no carbon atoms are in common between rings and/or carbon atoms are shared between rings, R may be identically or nonidentically repeated around the benzene ring shown, n is 1-6, and may be bonded to the benzene ring with the sharing and or nonsharing of carbon atoms, Y is hydrogen and/or alkyl substituents containing 1-6 carbon atoms, m is 0-5, and p is 2 or greater.
Dependencies are inferred from the claim text.