Process for the production of polymers having reactive end groups
Abstract
Abstract An improved process for the production of polymers having halogen end groups from cationically polymerizable monomers, the monomer being polymerized in an inert solvent at a temperature of from +10° to -130° C. using a catalyst system consisting of a metal halide and an organic halide, compounds corresponding to the following general formula being used as organic halides: ##STR1## wherein X represents a halogen atom; R 1 , R 2 , R 3 , represent C 5 -C 10 cycloalkyl, or a C 1 -C 20 straight- or branched-chain alkyl or ##STR2## wherein R 4 and R 5 represent C 5 -C 10 -cycloalkyl or a C 1 -C 20 straight- or branched-chain alkyl; and the organic halide has at least 5 carbon atoms and at most 50 carbon atoms and is in a concentration of from 10 -1 to 10 -6 mols per mol of monomer, while BX 3 , SnX 4 , TiX 4 , SbX 5 or FeX 3 , wherein X is fluorine, chlorine, bromine or iodine, is used as metal halide in from 2 to 500 times molar excess, based on the organic halide.
Inventors
- 👤 Rudiger Musch
- 👤 Oskar Nuyken
- 👤 Stephen D. Pask
- 👤 Axel Vischer
- 👤 Michael Walter
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
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