Method for Producing Silane-Modified Copolymers

• Main Authors: DUETSCH MICHAEL, MACK HELMUT, MARC LAURENT
• Format: Patent
• Language: English
• Published: 12.08.2010
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; 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; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention relates to a process for the preparation of a polymeric mixture, comprising a first polymerization step in which substantially monomer M is reacted by atom transfer radical polymerization in a mixture which contains a transition metal salt, a ligand having at least two chelating sites, an atom transfer radical polymerization initiator, a reducing agent and monomer M, and a second polymerization step in which monomer S substituted by silyl groups is added to the mixture obtained from the first polymerization step, so that monomer S substituted by silyl groups is reacted by atom transfer radical polymerization in the mixture obtained from the first polymerization step. The polymeric mixture obtained is used as a binder additive for sealants.