公开(公告)号：DE2740209A1

公开(公告)日：1979-03-08

申请号：DE2740209

申请日：1977-09-07

Applicant: BASF AG

Inventor： DEUSCHEL WALTER DIPL CHEM DR ,  DIKOW HERMANN DIPL CHEM DR ,  HAUSZ ALFRED FRIEDRICH DIPL CH ,  OSCHMANN WERNER DIPL CHEM DR ,  SCHAEDLER HUGO DIPL CHEM DR

IPC: C08F2/18 ,  C08F14/06

Abstract: Vinyl chloride is polymerised opt. with is not >30 wt.% of other copolymerisable monomers, in presence of free-radical catalysts, dispersing agents, polymerisation additives, and sorbitan esters. The esters used are liq. at room temp., their acid gps. are derived from branched-chain satd. carboxylic acids, and they have a hydro-lipophile equilibrium value 7 (pref. 3-7). Vinyl chloride is pref. polymerised in a closed system. In such a system polymer solids, e.g. sorbitan mono-palmitate, are not readily introduced. Certain solvents, e.g. toluene, are retained by the polymer; PVC contg. entrained polymer is not suitable for packaging. The method overcomes the problems of solvent retention.