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US 11,111,358 B2Granted
Stabilizer compounds
AssigneeSolvay Specialty Polymers USA, LLC
InventorsJoel Pollino, Gregory Goschy, Satchit Srinivasan
Life of this patent
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Abstract
A piperidine-based stabilizer compound of formula (I) or (II) that imparts UV, thermal, and/or thermo-oxidative stability to polymer compositions and more specifically to aromatic polymers and polymer compositions thereof.
Claims15
Stabilizer compounds (SC) of formula (I) or formula (II):
- wherein RJ is selected from the group consisting of —H, —CH3, —CH2CH3, —OCH3, and —OCH2CH3, and
- wherein each of RK, equal or different from each other and from RJ, is selected from the group consisting of:
- wherein RL is a monovalent substituent of general formula (Y-I):
- wherein Ri and Rm are the same or different from each other and are independently selected from the group consisting of H,
- and alkyl groups of formula —CH3, —CH2OCH3 and
- and
- wherein Ri is either in an ortho, meta or para position, and
- wherein Rm is either in an ortho or meta position, and
- wherein Q is —SO2—, and
- wherein RN is a divalent substituent selected from the group consisting of general formula (Z-I):
- wherein Ri and Rm are the same or different from each other and are independently selected from the group consisting of —H,
- alkyl groups of formula —CH3, —CH2OCH3 and
- wherein Ri and Rm are independently either in an ortho or meta position, and
- wherein Q is —SO2—.
11 more elements
Dependencies are inferred from the claim text.