Patent ID: 11879050
Assignee: SI GROUP, INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 16:
17. A polymeric composition comprising:
a polyolefin; and
an antidegradant blend, consisting essentially of:
a. a phenolic antioxidant;
b. an organic phosphite antioxidant;
c. a hydrated metal hypophosphite; and
(d) optionally one or more components selected from the group consisting of sulphur-containing antioxidants or reducing agents, aminic antioxidants or reducing agents, hydroxylamines or precursors thereof, lactone radical scavengers, acrylate radical scavengers, clarifiers, antiblocks, UV absorbers, processing aids, and chelating agents,

wherein the antidegradant blend is absent any metal carboxylate and absent any buffering agent having the capacity to buffer in aqueous solution at a pH range from 4 to 8.