Process for the continuous manufacture of vinyl chloride polymers
AssigneeHoechst Aktiengesellschaft
InventorsFranz Botsch, Helmut Kraus
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AssigneeHoechst Aktiengesellschaft
InventorsFranz Botsch, Helmut Kraus
Estimating the term…
A process for the continuous preparation of vinyl chloride polymers containing at least 85 weight percent of polymerized vinyl chloride units in an aqueous emulsion in the presence of at least one water soluble catalyst and 1.5 to 3.5 weight percent (calculated on the monomer(s)) of at least one water soluble salt of an aliphatic, saturated monocarboxylic acid having the formula ##STR1## wherein R.sub.1 and R.sub.2 are equal or different each representing a saturated, branched or unbranched alkyl radical having 1 to 5 carbon atoms or of at least one of said water soluble salt in mixture together with at least one known emulsifier being an organic compound containing sulfonic acid-groups. The resulting polymers show an equally excellent thermostability in mixture with one of a multiplicity of known stabilizers especially of the lead-, tin- or barium/cadmium type.
In a process for the continuous manufacture of homo- or copolymers or graft polymers of vinyl chloride containing at least 85% by weight relative to the total polymer of polymerized vinyl chloride units, in aqueous emulsion, in the presence of at least one water-soluble catalyst, from 1.5 to 3.5% by weight relative to the monomers used of at least one water-soluble emulsifier:
Dependencies are inferred from the claim text.