Polymerization method using ultraviolet light

US4105519A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Horst Pennewiss · Darmstadt, DE
• Hermann Plainer · Reinheim, DE
• Peter Quis · Darmstadt, DE
• Hans Trabitzsch · Seeheim-Jugenheim, DE
• Juergen Masanek · Pfungstadt, DE
• Juergen Jakob · Lorsch, DE

Key dates

• Filing date: Oct 5, 1976
• Grant date: Aug 8, 1978
• Expiry date: Oct 5, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/117
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for polymerizing or copolymerizing water-soluble monomers, in a layer thickness between 2 and 100 mm, and at a temperature between 0.degree. C. and 100.degree. C., by irradiation with ultraviolet light in the presence of atmospheric oxygen, wherein the material to be polymerized contains at least 1 ppm of a water-soluble anthraquinone unsubstituted in the 1,4,5, and 8-positions and at least 10 ppm of dissolved chloride ions.