Method for producing polyalkylene arylates

US6281283A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Heitz · Ludwigshafen am Rhein, DE
• Martin Klatt · Bad Dürkheim, DE

Key dates

• Filing date: Sep 7, 2000
• Grant date: Aug 28, 2001
• Expiry date: Sep 7, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2367/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A continuous process for the preparation of polyalkylene arylates A) containing lubricants and nucleating agents, in which an aromatic dicarboxylic acid or esters or ester-forming derivatives thereof are esterified or transesterified with a molar excess of an aliphatic dihydroxy compound and the (trans)esterification product obtained is polycondensed, wherein when at least 80% of the desired viscosity number has been reached, lubricants B) and nucleating agents C) are added to the polymer melt and the melt is optionally post-condensed and then discharged, cooled and granulated.