Process for the bromination of a chloro-substituted polybutadiene

• Main Authors: LAAS, HANS JOSEF, NACHTKAMP, KLAUS, KOENIGSHOFEN, HEINRICH, LUCAS, HEINZ WERNER
• Format: Patent
• Language: English; French; German
• Published: 27.10.1993
• Edition: 5
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; DYES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS; USE OF MATERIALS AS ADHESIVES

Bromiertes chlorsubstituiertes Poly-1,3-butadien wird hergestellt, indem man einen wäßrigen chlorsubstituierten Poly-1,3-butadienlatex bei einem pH-Wert <7 und einer Temperatur von 20 bis 95°C in wäßriger Phase mit einem Bromierungsmittel in Gegenwart eines radikalbildenden Katalysators und/oder unter Belichtung umsetzt, gewünschtenfalls das bromierte Reaktionsprodukt anschließend aus der erhaltenen wäßrigen Dispersion ausfällt und von der wäßrigen Flüssigkeit abtrennt.