| abstract |
The present invention relates to a mixed acid of dimethyl terephthalate (DMT), dimethyl isophthalate (DMI), or a mixed acid of terephthalic acid (TPA) and isophthalic acid (IPA). ), Mixed diols of ethylene glycol (EG), polyethylene glycol (PEG), or 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetramethylene ether glycol ( Mixed diols of polytetramethylene ether glycol (PTMEG), or ethylene glycol (EG), polyethylene glycol (PEG), 1,4-butanediol (1,4-Butanediol: 1,4-BD) and polytetra The present invention relates to a polyester-based elastomer having a low melting point function in which a mixed diol of methylene ether glycol (PTMEG) is prepared as a diol component (Diol). |