Manufacture of polyethers from bisphenols and dihalides in the absence of solvent and in the presence of alkali metal carbonate

US4200727A · kind A · utility

Assignee

• BASF SE

Inventors

• Gerd Blinne · Worms, DE
• Claus Cordes

Key dates

• Filing date: Oct 19, 1978
• Grant date: Apr 29, 1980
• Expiry date: Oct 19, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/38
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polyethers are manufactured by polycondensing about equivalent amounts of a bisphenol and of a dihalogen compound in the presence of an anhydrous alkali metal carbonate, in the absence of a solvent or diluent. The polyethers may be used for the manufacture of moldings, fibers, films, adhesives and coating compositions.