A Highly Efficient Aromatic Amine Ligand/Copper(I) Chloride Catalyst System for the Synthesis of Poly(2,6-dimethyl-1,4-phenylene ether)

Polymers

Young Jun Kim¹  Joong-In Kim²  Yong Tae Kim³  Min Jae Shin⁴  Kisoo Kim⁴ 

[1] D Business Labs, 74 Simin-daero, Dongan-gu, Anyang-si, Gyunggi-do 14080, Korea;;Hyosung R&SAMSUNG SDI, SDI-dong, Maetan-dong 130, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16678, Korea;School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 16419, Korea;

关键词: rate of polymerization;    aromatic amine ligand;    highly effective catalyst;    copper(I) chloride;    poly(2,6-dimethyl-1,4-phenylene ether);    3,3′,5,5′-tetramethyl-4,4′diphenoquinone;   

DOI  :  10.3390/polym10040350

来源: DOAJ

【 摘 要 】

Highly active catalyst systems for polymerizing 2,6-dimethylphenol were studied by using aromatic amine ligands and copper(I) chloride. The aromatic amine ligands employed were pyridine, 1-methylimidazole, 2-aminopyridine, 3-aminopyridine, and 4-aminopyridine. A mixture of chloroform and methanol (9:1, v/v) was used as a polymerization solvent. All experiments were performed with oxygen uptake measurement apparatus, while the reaction rate for each aromatic amine ligand-Cu catalyst system and the amount of by-product, 3,3′,5,5′-Tetramethyl-4,4′diphenoquinone (DPQ), were measured to determine the efficiency of the catalyst systems. The 4-aminopyridine/Cu (I) catalyst system was found to be extremely efficient in poly(2,6-dimethyl-1,4-phenylene ether) (PPE) synthesis; it had the fastest reaction rate of 6.98 × 10−4 mol/L·s and the lowest DPQ production. The relatively high basicity of 4-aminopyridne and the less steric hindrance arising from a coordination of Cu and 4-aminopyridine in this catalyst are responsible for the fast polymerization rate. When 2-aminoprydine (an isomer of 4-aminopyridine) was used as a ligand, however, no polymerization occurred probably due to steric hindrance.

【 授权许可】

Unknown