Method for producing ethylene-carboxylic acid copolymer
AssigneesSK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
InventorsIn Hyoup Song, Hong Chan Kim, Jang Hoon Ock, Jung A Lee, Wan Ju Jeong
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Abstract
In a method of producing an ethylene-carboxylic acid copolymer according to an embodiment of the present invention, a carboxylic acid monomer and a polar co-solvent are introduced separately into a mixing unit or stored together in a supply unit to form a mixture. The mixture and ethylene are injected into a reactor to be copolymerized. Reaction kinetic properties of the carboxylic acid monomer and the polar co-solvent are controlled to suppress a formation of by-products.
Claims15
A method of producing an ethylene-carboxylic acid copolymer, comprising:
- forming a mixture of a carboxylic acid monomer and a polar co-solvent that is an organic solvent;
- and
- injecting the mixture and ethylene into a reactor to copolymerize the mixture and ethylene,
- wherein the forming the mixture of the carboxylic acid monomer and the polar co-solvent includes adjusting a Reaction Progress Index (RPI) defined by Equation 1 in a range from 1.5 to 1.3×107 sec·K to control an amount of a side reaction product of the carboxylic acid monomer and the polar co-solvent:
- RPI
- =
- C
- s
-
- olvent
- C
- m
-
- onomer
-
- t
-
- T
- [
- Equation
-
- 1
- ]
- wherein, in Equation 1, Csolvent and Cmonomer are initial molar concentrations of the carboxylic acid monomer and the polar co-solvent, respectively, t represents a contact time of the carboxylic acid monomer and the polar co-solvent, and T represents an average contact temperature of the carboxylic acid monomer and the polar co-solvent before being reacted with ethylene.
Dependencies are inferred from the claim text.