Modified high cis conjugated diene copolymer and preparing method of the same
AssigneeChi Mei Corporation
InventorsKuei-Lun Cheng, Chih-Cheng Lee, Kuan-Lin Hsieh
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Abstract
A modified conjugated diene copolymer and a preparing method for the same are provided. The method comprising a polymerization step for polymerizing conjugated diene monomers to form a conjugated diene polymer; and a modifying step for reacting the conjugated diene polymer with a modifier to form a modified conjugated diene polymer. The modifier includes a polythiol ester compound, a polythiol alkane compound or a combination thereof, the polythiol ester compound has a chemical formula (I): (Ra)(OC(═O)Rb-SH)x (I). The polythiol alkane compound has a chemical formula (II): HS—(CH2)m—(Rd)nCH2SH (II).
Claims20
A method for preparing a modified conjugated diene polymer, comprising a polymerization step for polymerizing conjugated diene monomers to form a conjugated diene polymer;
- and a modifying step for reacting the conjugated diene polymer with a modifier to form a modified conjugated diene polymer, wherein the modifier includes a polythiol ester compound, a polythiol alkane compound or a combination thereof, the polythiol ester compound has a chemical formula (I):
- (Ra)(OC(═O)Rb-SH)x (I),
- Ra is an aliphatic hydrocarbon compound with 4˜8 carbon atoms, a cyclo aliphatic hydrocarbon compound with 5˜10 carbon atoms, or an aromatic hydrocarbon compound with 6˜9 carbon atoms,
- Rb is an aliphatic hydrocarbon compound with 1˜15 carbon atoms,
- x is an integer of 2˜4,
- the polythiol alkane compound has a chemical formula (II):
- HS—(CH2)m—(Rd)nCH2SH (II),
- m and n are independently an integer of 0˜10,
- Rd has a structural formula (III),
- a is an integer of 0˜10,
- b is an integer of 0˜1.
Dependencies are inferred from the claim text.