Degradation of poly(diacetylenes)

US4640960A · kind A · utility

Assignee

• BASF SE

Inventors

• Reinhold J. Leyrer · Schifferstadt, DE
• Gerhard Wegner · Mainz, DE
• Michael Mueller · Dresden, DE

Key dates

• Filing date: Nov 27, 1984
• Grant date: Feb 3, 1987
• Expiry date: Nov 27, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Molecular degradation of poly(diacetylenes), in particular with production of poly(diacetylenes) having selected molecular weights, is carried out by a process in which the poly(diacetylenes), for example in solution or as solid or liquid layers, are present as a homogeneous mixture with sensitizers or sensitizer systems which can be activated chemically, those which can be activated by heat and/or those which can be activated by actinic light, and degradation of the poly(diacetylenes) is induced, in particular via free radical reactions, by appropriate activation of these sensitizers or sensitizer systems.