| 1 | Hexanedioic acid, polymer with 1,4-butanediol; | |
| 2 | Density pycnometer method in the determination of polybutylene terephthalate (PBT) and corresponding principle are introduced in the paper. | |
| 3 | Hydroxyl-terminated poly (butylene succinate) was synthesized by melt polycondensation from succinic acid, 1,4-butanediol. | |
| 4 | Bacillus polymyxa and method for preparing optically-pure R, R type 2, 3-butanediol by utilizing same. | |
| 5 | Recently, ARCO chemical company announces, he plans to expand its are in greatly worldwide 1 inside, the production of 4- Ding Erchun. |
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