High pertormance thermoplastic polyether ester elastomer with low degree of hardness and high melting point

[0069] Add 1018.3 parts of dimethyl terephthalate, 708.6 parts of 1,4-butanediol, 1407.1 parts of polytetrahydrofuran ether glycol with a molecular weight of 2000, 2.5 parts of A-1 antioxidant, 2.5 parts of P -1 antioxidant, 4.5 parts of tetrabutyl titanate. The synthesis process is the same as in Comparative Example 1.

[0071] Add 1.25 parts of A-1, 1.25 parts of A-2, 2.5 parts of P-1, and the rest are the same as in Example 1. Comparative example 2:

[0077] Add 1250.9 parts of dimethyl terephthalate, 870.4 parts of 1,4-butanediol, 383.0 parts of polytetrahydrofuran ether diol with a molecular weight of 1000, 765.9 parts of polytetrahydrofuran ether diol with a molecular weight of 2000, and 2.5 parts in a 10L polymerization kettle A-1 antioxidant, 2.5 parts of P-1 antioxidant, 4.5 parts of tetrabutyl titanate. The synthesis process is the same as in Comparative Example 1. The performance comparison is shown in Table 3.

[0078] project

[0079] After using the polyether with an average molecular weight of 1500, all performances are improved.