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US 2022/0033620 A1Published application
Composition
AssigneeSi Group USA (Usaa), LLC
InventorsJonathan HILL, Maurice POWER
Life of this patent
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Abstract
The present invention provides a stabilising composition, comprising: a) a first phenolic antioxidant comprising one or more phenolic compounds having the structure of formula (I): wherein R1 is a linear or branched alkyl group having from 12 to 20 carbon atoms; and b) one or more second phenolic antioxidants independently selected from: a mono-hydroxybenzene having lower steric hindrance than the first phenolic antioxidant; a di-hydroxybenzene; and/or a tri-hydroxybenzene.
Claims15
A stabilizing composition, comprising:
- a) a first phenolic antioxidant comprising one or more phenolic compounds having the structure of formula (I):
- wherein R1 is a linear or branched alkyl group having from 12 to 20 carbon atoms;
- and
- b) one or more second phenolic antioxidants independently selected from the group consisting of:
- a mono-hydroxybenzene selected from the group consisting of α-tocopherol;
- 4,4′-thiobis(2-t-butyl-5-methylphenol), 2,2′-thiobis(6-t-butyl-4-methylphenol), 2,2′-methylenebis(6-t-butyl-4-methylphenol), 4,4′-butylidenebis[2-t-butyl-5-methylphenol], 2,2′-methylenebis(6-nonyl-p-cresol) and phenol, 4-methyl-, reaction products with dicyclopentadiene and isobutylene;
- a di-hydroxybenzene selected from the group consisting of 4-tert-butylcatechol, 2,5-di-tert-amyl-hydroquinone, benzene-1,2-diol, benzene-1,3-diol, and benzene-1,4-diol;
- and
- a tri-hydroxybenzene selected from the group consisting of benzene-1,2,3-triol, propyl 3,4,5-trihydroxybenzoate;
- and benzene-1,2,4-triol,
- wherein the stabilizing composition does not contain a benzofuranone-based booster component and does not contain an amine-containing antioxidant.
8 more elements
Dependencies are inferred from the claim text.