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US 2003/0158345 A1Published application
Method for preparing transparent blcok copolymer resin, copolymer prepared thereby, and usage thereof
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsSam-Min Kim, Jong-Geun Kim, Jong-Hyun Park
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Abstract
The present invention relates to a method for preparing a copolymer containing a combined linear and nonlinear block, that is, mikto block, a copolymer prepared from the method, and usages of the copolymer. More particularly, the present invention provides a novel method for preparing a multi-component copolymer by polymerization using a multifunctional compound and one charge of an initiator, and a copolymer having a mikto block including different types of terminal blocks.
Claims84
A method for preparing a transparent block copolymer resin comprising:
- polymerizing under solution polymerization conditions at least one vinyl aromatic monomer and at least one conjugated diene monomer in a ratio of 55 to 95 weight % vinyl aromatic monomer and 45 to 5 weight % conjugated diene monomer, wherein the polymerizing is conducted using a charge sequence of the following order:
- (a) a vinyl aromatic monomer, a polar organic compound, polymerization solvent and an anionic initiator to prepare an anionic polymer block;
- (b) a multifunctional compound and a conjugated diene monomer being added to the anionic polymer block to prepare a mikto block of polymer having a combined linear and nonlinear structure;
- (c) a conjugated diene monomer;
- (d) a vinyl aromatic monomer;
- and
- (e) a multifunctional coupling agent.
4 more elements
A method for preparing a transparent block copolymer resin comprising:
- polymerizing under solution polymerization conditions at least one vinyl aromatic monomer and at least one conjugated diene monomer in a ratio of 55 to 95 wt. % vinyl aromatic monomer and 45 to 5 wt. % conjugated diene monomer, wherein the polymerizing is conducted using a charge sequence of the following order:
- (a) a vinyl aromatic monomer, a polar organic compound, polymerization solvent and an anionic initiator to prepare an anionic polymer block;
- (b) a multifunctional compound and a conjugated diene monomer being added to the anionic polymer block to prepare a mikto block of polymer having a combined linear and nonlinear structure;
- (c) a conjugated diene monomer and a vinyl aromatic monomer being added in a simultaneous or instantaneously sequential manner;
- and
- (d) a multifunctional coupling agent.
3 more elements
A method for preparing a transparent block copolymer resin comprising:
- polymerizing under solution polymerization conditions at least one vinyl aromatic monomer and at least one conjugated diene monomer in a ratio of 55 to 95 wt. % vinyl aromatic monomer and 45 to 5 wt. % conjugated diene monomer, wherein the polymerizing is conducted using a charge sequence of the following order:
- (a) a vinyl aromatic monomer, a polar organic compound, polymerization solvent and an anionic initiator to prepare an anionic polymer block;
- (b) a multifunctional compound and a conjugated diene monomer being added to the anionic polymer block to prepare a mikto block of polymer having a combined linear and nonlinear structure;
- (c) a conjugated diene monomer and a vinyl aromatic monomer being added in a simultaneous or sequential manner;
- (d) a conjugated diene monomer and a vinyl aromatic monomer being added in a simultaneous or instantaneously sequential manner;
- and
- (e) a multifunctional coupling agent.
4 more elements
A method for preparing a transparent block copolymer resin comprising:
- polymerizing under solution polymerization conditions at least one vinyl aromatic monomer and at least one conjugated diene monomer in a ratio of 55 to 95 wt. % vinyl aromatic monomer and 45 to 5 wt. % conjugated diene monomer, wherein the polymerizing is conducted using a charge sequence of the following order:
- (a) a vinyl aromatic monomer, a polar organic compound, a polymerization solvent and an anionic initiator to prepare an anionic polymer block;
- (b) a multifunctional compound and a conjugated diene monomer being added to the anionic polymer block to prepare a mikto block of polymer having a combined linear and nonlinear structure;
- (c) a conjugated diene monomer;
- (d) a vinyl aromatic monomer;
- (e) a conjugated diene monomer;
- (f) a vinyl aromatic monomer;
- and
- (g) a multifunctional coupling agent.
6 more elements
A method for preparing a transparent block copolymer resin comprising:
- polymerizing under solution polymerization conditions at least one vinyl aromatic monomer and at least one conjugated diene monomer in a ratio of 55 to 95 wt. % vinyl aromatic monomer and 45 to 5 wt. % conjugated diene monomer, wherein the polymerizing is conducted using a charge sequence of the following order:
- (a) a vinyl aromatic monomer, a polar organic compound, a polymerization solvent and an anionic initiator to prepare an anionic polymer block;
- (b) a multifunctional compound and a conjugated diene monomer being added to the anionic polymer block to prepare a mikto block of polymer having a combined linear and nonlinear structure;
- (c) a conjugated diene monomer and a vinyl aromatic monomer being added in a simultaneous or instantaneously sequential manner;
- (d) a conjugated diene monomer;
- (e) a vinyl aromatic monomer;
- and
- (f) a multifunctional coupling agent.
5 more elements
A method for preparing a transparent block copolymer resin comprising:
- polymerizing under solution polymerization conditions at least one vinyl aromatic monomer and at least one conjugated diene monomer in a ratio of 55 to 95 wt. % vinyl aromatic monomer and 45 to 5 wt. % conjugated diene monomer, wherein the polymerizing is conducted using a charge sequence of the following order:
- (a) a vinyl aromatic monomer, a polar organic compound, a polymerization solvent and an anionic initiator to prepare an anionic polymer block;
- (b) a multifunctional compound and a conjugated diene monomer being added to the anionic polymer block to prepare a mikto block of polymer having a combined linear and nonlinear structure;
- (c) a conjugated diene monomer;
- (d) a vinyl aromatic monomer;
- (e) a conjugated diene monomer and a vinyl aromatic monomer being added in a simultaneous or instantaneously sequential manner;
- and
- (f) a multifunctional coupling agent.
5 more elements
Dependencies are inferred from the claim text.