Hochhitzebeständiges Polyesterharz und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4768517

Anmeldetag

23. August 2024

Veröffentlichung

27. Februar 2025

Rechtsraum

EP

Abstract

The present invention relates to a highly heat-resistant polyester resin and a preparation method therefor. Specifically, according to one embodiment of the present invention, when the highly heat-resistant polyester resin is immersed in water at 90°C for seven days, the value, being greater than 0.05 and less than 0.5, of relation 1 (ΔH/Tg ) of the glass transition temperature (Tg) and the amount of change of haze (ΔH) before and after immersion is satisfied, and thus high heat-resistance, which prevents shape deformation even if used in a microwave oven or the like, can be ensured without deterioration of properties such as transparency or mechanical properties.

Anmelder

Firma

SK Chemicals Co., Ltd.

Land

🇰🇷 Südkorea