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US 2017/0291997 A1Published application
End-modified conjugated diene polymer and method for preparing the same
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsHanjoung Cho, Jae Young Ko, Min Sung Kwon, Dae Hyung Lee, Eun Kyung Noh, Cheol Min Park, Sang Chul Ji
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Abstract
One aspect of the present invention provides an end-modified conjugated diene polymer represented by Formula 1 below: wherein p is a conjugated diene polymer chain; R1 to R7 are each independently C1-C20 saturated or unsaturated hydrocarbon chains; X is carbon (C), silicon (Si), or nitrogen (N); a is 1 or 2; and n is an integer of 1 to 200, and a method for preparing the same.
Claims4
A method for preparing an end-modified conjugated diene polymer, comprising:
- (a) polymerizing at least one monomer of a conjugated diene monomer and an aromatic vinyl monomer to form a living polymer in the presence of a solvent, a lewis base, and an organometallic compound;
- and
- (b) reacting the living polymer with a compound represented by Formula 2 below:
- to modify an end of the living polymer,
- wherein R1 to R8 are each C1-C20 saturated or unsaturated hydrocarbon chains;
- X is carbon (C), silicon (Si), or nitrogen (N);
- a is 1;
- b, c and d are each integers of 0 to 3 satisfying an equation of b+c+d=3;
- and n is an integer of 1 to 200.
6 more elements
Dependencies are inferred from the claim text.