Method of preparing diene-based rubber polymer and method of preparing graft polymer comprising the same
AssigneeLG Chem, Ltd.
InventorsKi Hyun KIM, Young Hwan JEONG
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Abstract
The present disclosure relates to a method of preparing a diene-based rubber polymer, which includes: initiating polymerization of a monomer in the presence of a coordination metal catalyst; and adding a radical initiator when a polymerization conversion rate is 20 to 75% and performing the polymerization of the monomer, wherein the monomer is a diene-based monomer or a diene-based monomer and an aromatic vinyl-based monomer.
Claims13
A method of preparing a diene-based rubber polymer, comprising:
- initiating polymerization of a monomer in the presence of a coordination metal catalyst;
- and
- adding a radical initiator in response to a polymerization conversion rate being 20 to 75% and performing the polymerization of the monomer,
- wherein the monomer is a diene-based monomer or the monomer includes the diene-based monomer and an aromatic vinyl-based monomer.
A diene-based rubber polymer having a microstructure comprising 30 to 75 mol % of a 1,4-cis bond, 15 to 55 mol % of a 1,4-trans bond, and 7 to 16 mol % of a 1,2-bond.
Dependencies are inferred from the claim text.