Stabilized poly(alkylene terephthalate) molding materials

US4229553A · kind A · utility

Assignee

• BASF SE

Inventors

• Hans-Josef Sterzel · Schifferstadt, DE
• Rolf Wurmb
• Franz Schmidt · Mannheim, DE
• Erhard Seiler · Ludwigshafen, DE

Key dates

• Filing date: Jul 12, 1979
• Grant date: Oct 21, 1980
• Expiry date: Jul 12, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L67/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Poly(alkylene terephthalate) molding materials which contain, as the stabilizer, a diepoxide of molecular weight from 200 to 2,000, and a catalyst which is an alkali metal salt of a chelating agent possessing one or more --N(CH.sub.2 --COO.sup.-).sub.2 groups in the molecule. Preferred catalysts are trisodium nitrilotriacetate and tetrasodium ethylenediaminetetraacetate. The molding materials may be used for the manufacture of moldings, films, monofilaments and fibers.