RECOVERY OF HIGH VALUE POLYCARBONATE FROM POLYCARBONATE WASTES

• Main Author: IDEL, KARSTEN
• Format: Patent
• Language: English; German
• Published: 23.07.1980
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The present invention relates to a process for the recovery of aromatic, high-molecular weight, thermoplastic polycarbonates from polycarbonate scrap, it being possible for the polycarbonate scrap to be either in the pure form as transparent naturally-occurring material, or mixed together with organic and, especially, inorganic dyestuffs and/or other additives, or in the form of a blend with other thermoplastic materials.