End group functionalization agents for polydiene
AssigneesIowa State University Research Foundation, Inc., Kumho Petrochemical
InventorsAaron David Sadow, Bradley M. Schmidt, Gwanghoon Kwag, Hanbaek Lee, Dong Eun Kang
Life of this patent
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Abstract
The present invention relates to a modified polymer having the structure of Formula (I) and Formula (IV): wherein A, R1, R2, R3, a, and n are as described herein and wherein R, R′, R″, x, and k are as described herein and methods for preparation thereof. The present invention also relates to a compound having the structure of Formula (II): wherein A, R1, R2, R3, a, and n are as described herein. The present invention also relates to a process for polymerizing unsaturated hydrocarbon monomers.
Claims14
A modified polymer having the structure of Formula (IV):
- wherein
- each indicates a bond with cis and/or trans geometric isomerism;
- is a polymer of formula
- R is H or C1-6 alkyl;
- R′ is selected from the group consisting of H and —NRaRb;
- R″ is H or C1-6 alkyl;
- Ra is H or C1-6 alkyl;
- Rb is H or C1-6 alkyl;
- W is a repeating unit of the polymer;
- m is 1000 to 55000;
- k is 1 or 500;
- and
- x is 0 to 3.
A process for polymerizing unsaturated hydrocarbon monomers, said process comprising:
- providing unsaturated hydrocarbon monomers;
- providing a compound of Formula (V):
- wherein
- R is H or C1-6 alkyl;
- R′ is selected from the group consisting of H, C1-6 alkyl, —OC1-6 alkyl, and —NRaRb,
- R″ is H or C1-6 alkyl;
- Ra is H or C1-6 alkyl;
- Rb is H or C1-6 alkyl;
- and
- x is 0 to 3;
- providing a catalyst selected from the group consisting of:
- (1) a mixture of (A) a compound of Formula M2(HA2)A23;
- (B) a halogen containing compound;
- and (C) an organometallic compound, wherein M2 is a lanthanide metal;
- A2 is C8-20 carboxylate;
- and (2) a compound of Formula (III):
- MC(SiHAlk2)3(R11)2 (III), wherein M is a lanthanide or a transition metal;
- Alk is C1-6 alkyl;
- R11 is halide, bis(oxazolinato), carboxylate, acetyl acetonate, amidate, alkoxide, amide, BR124, AlR124, or alkyl aluminate;
- R12 is independently selected at each occurrence thereof from the group consisting of H, C6F5, phenyl, and C1-6 alkyl;
- and
- polymerizing the unsaturated hydrocarbon monomers in the presence of the catalyst and the compound of Formula (V) under conditions effective to produce the modified polymer.
Dependencies are inferred from the claim text.