VERFAHREN ZUR HERSTELLUNG EINES FEINTEILIGEN VINYLCHLORID-PFROPFCOPOLYMERISATS UND VERWENDUNG FUER DEN EINSATZ ALS VISKOSITAETSERNIEDRIGER UND MATTIERUNGSMITTEL

摘要

The invention concerns the preparation, by suspension polymerization, of a fine-particulate vinyl chloride graft copolymerizate with a mean particle size of 20-30 mu m, the graft monomer being polymerized in the presence of 1.0-5.0 % by wt. of an optionally cross-linked alkyl acrylate polymer and using cellulose ether with a methoxy content of 15-25 % and a hydroxypropyl content of 3-10 % and with a viscosity of 30-150 mPa<.>s determined in accordance with ASTM D 2363. The product of the polymerization process is particularly suitable for use as a viscosity-lowering agent for plastisols and as a delustering agent for thermoplastic resins and plastisols.