Process for preparing solid polyvinyl ester resins
AssigneeWacker Polymer Systems GmbH & Co. KG
InventorsPeter Tschirner, Andreas Lumpp, Robert Singer, Guenter Braunsperger
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Abstract
The invention relates to a process for preparing solid polyvinyl ester resins using a bulk or solution polymerization process in the presence of a chain transfer agent, wherein one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms are polymerized in the presence of a compound selected from the group consisting of monovalent aliphatic alcohols having 1 to 6 carbon atoms, esters of aliphatic monocarboxylic acids and aliphatic alcohols each having 1 to 4 carbon atoms, or aliphatic ketones having 3 to 6 carbon atoms.
Claims16
In a process for preparing solid polyvinyl ester resins employing a bulk or solution polymerization process in the presence of a chain transfer agent, the improvement comprising polymerizing one or more vinyl esters of unbranched or branched alkyl carboxylic acids having 1 to 15 carbon atoms and optionally further unsaturated copolymerizable comonomers in the presence of one or more chain transfer agents selected from the group consisting of monovalent C1-6 aliphatic alcohols, esters of C1-4 aliphatic monocarboxylic acids with C1-4 aliphatic alcohols, and C3-6 aliphatic ketones.
Dependencies are inferred from the claim text.