| 摘要 |
High-molecular weight polyhexamethylene adipates with molecular weights greater than 10 000, preferably greater than 30 000, and a viscosity of 100 DEG C of at least 300 poise, preferably exceeding 6000, are produced by polymerisation carried out with a ratio of diol/acid in the range 0.990-1.03, preferably in the range 1.001 to 1.01. |
