Thiosynergist, antioxidant composition comprising the same and poly-mer composition comprising the antioxidant composition

EP4766691A2Pending Publication Date: 2026-07-01BASF SE
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Patent Information

Application Number
EP2024769240
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-08-21
Filing Date
2024-08-20
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

Existing thiosynergists are either solids with limited application in liquid antioxidant solutions or have high volatility, which compromises their long-term performance in stabilizing polymers.

Method used

A liquid thiosynergist with the formula (I), where each R is a branched C8 alkyl, is developed. This compound is combined with other antioxidants to form a polymer-stabilizing antioxidant composition, which includes hindered phenol, hindered amine, and phosphite/phosphonite, and is synthesized through a process involving acrylic acid and pentaerythritol reactions.

Benefits of technology

The liquid thiosynergist provides low odor, low volatility, high thermal stability, good solvent solubility, and a synergistic stabilizing effect when combined with other antioxidants, effectively stabilizing a wide range of polymers.

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Abstract

This disclosure relates to a liquid thiosynergist, to an antioxidant composition comprising the same, to a polymer composition comprising the antioxidant composition, to use of the antioxidant composition for stabilizing polymer, and to a process of synthesizing the liquid thiosynergist.
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