Method of manufacturing ethylene-vinyl acetate copolymer
AssigneeThe Nippon Synthetic Chemical Industry Co., Ltd.
InventorYoshiharu Nagao
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Abstract
A method of manufacturing an ethylene-vinyl acetate copolymer is provided which suppresses the formation of scale and gelled product. In a continuous polymerization of ethylene and vinyl acetate in a polymerizing vessel with a cooling jacket and/or coil, the heat transfer area of the jacket and/or coil and the polymerizing calorific value per hour satisfy the following formula: A<Q/2000 wherein A is the heat transfer area (m2) and Q is the calorific value (kcal/hr) for polymerization.
Claims4
A method of manufacturing an ethylene-vinyl acetate copolymer which comprises carrying out continuous polymerization of ethylene and vinyl acetate in a polymerizing vessel with a jacket and/or a coil for cooling, wherein the heat transfer area of the jacket and/or coil and the polymerizing calorific value per hour satisfy the following formula:
- A<Q/2000
- wherein A is the heat transfer area (m2) and Q is the calorific value (kcal/hr) for polymerization.
Dependencies are inferred from the claim text.