Polymorphe Form B von 3-(3,5-Di-Tert-Butyl-4-Hydroxyphenyl)-Propionsäure 6-(3,5-Di-Tert-Butyl-4-Hydroxy-Phenyl)-Propionyloxy)-Hexahydro-FURO[3,2-B!furan-3-Yl Ester und Verfahren zu Seiner Herstellung

Details

Veröffentlichungs-Nr.

EP4803524

Anmeldetag

5. Dezember 2025

Veröffentlichung

9. September 2026

Rechtsraum

EP

Abstract

The present disclosure relates to a polymorphic Form B of 3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionic acid 6-[3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionyloxy]-hexahydro-furo[3,2-b]furan-3-yl ester wherein the polymorphic Form B is crystalline, having an X-ray powder diffraction pattern (CuKα) comprising peaks at 2-theta about 8.48, 10.18, 12.28, 12.62, 13.42, 15.14, 16.39, 17.32, 17.76, 18.42, 19.12, 19.74, 20.89, 21.52, 23.58 and 24.73. The present disclosure also relates to a process of preparation of a polymorphic Form B of 3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionic acid 6-[3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionyloxy]-hexahydro-furo[3,2-b]furan-3-yl ester. The polymorphic Form B is used for thermos-oxidative stabilization of polyolefins. The present disclosure also provides a composition for thermo-oxidative stabilization of polyolefins. All the properites such as oxygen induction time (OIT), change in melt flow index (MFR), yellowness index (YI), Change in yellowness index have been improved without compromising the mechanical property.

Anmelder

Firma

Hindustan Petroleum Corporation Limited

Land

🇮🇳 Indien