Process for manufacturing polyethylene terephthalate

US9534080B2 · kind B2 · utility

Assignee

• CLARIANT INTERNATIONAL LTD · CH

Inventors

• Ernesto Dongiovanni · Horbourg-Wihr, FR
• Korada Supat · Bang Phra, TH

Key dates

• Filing date: Nov 30, 2013
• Grant date: Jan 3, 2017
• Expiry date: Nov 30, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/5393
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing a polyester resin, said process comprises the steps of and optionally a colour correction additive containing cobalt ions;