周一聚酯链价格明显下跌，主要是我国的聚酯纤维的需求下降。
Prices were more evidently falling in the polyester chain on Monday, reflecting a new decline in demand for polyester fibers in China.
对含取代氨端基的聚酯类超分散剂的合成方法进行了研究，并为获得适当长度的聚酯链选择了最佳合成条件。
A synthetic method for substituted amino-terminal group polyester hyperdispersants is researched and the optimum conditions for polyester chain with suitable length are chosen.
用聚酯胶的溶剂对所得产品进行溶取试验并且通过红外光谱分析都证明了链交换反应的存在。
The exchange reaction is proved by the experiment of solution of the product in polyester adhesive agent and the analysis of infrared ray analyzer.
在聚酯中引入刚性链段（即将脂肪族聚酯与芳香族、液晶基元共聚合）可改善聚酯的加工性能；
The processability of polyesters could be improved significantly after incorporating stiff chain segment through copolymerization of aliphatic polyester with aromatic liquid crystal element.
介绍了世界乙二醇、精对苯二甲酸、 聚对苯二甲酸乙二酯及其纤维、瓶用树脂等聚酯产业链的生产新动向和需求预测。
The article gives an account of the new production trends and demand forecast of the world's PET industry chain in EG, PTA, PET and its fiber and bottle grade resin.
以聚酯（PEA、PEPA）或聚醚（PTMG）和TDI为原料合成聚氨酯预聚体，用三异丙醇胺 （TIPA）和1，4-丁二醇（BDO）的混合物作扩链剂制备聚氨酯弹性体。
A series of polyurethane (PU) elastomer were synthesized from polyester(PEA, PEPA) or polyether(PTMG), toluene dissocyanate (TDI), mixture of triisopropanolamine(TIPA) and 1,4-butanediol(BDO).
正构烷烃产业链，努力形成聚酯、聚酰胺、塑料、合成橡胶、精细化工等生产和深加工五大产业集群。
It is also dedicated to the development of five industrial clusters of production and deep-processing of polyester, polyamide, plastic, synthetic rubber and fine chemicals.
实验结果表明，改变酸醇比例可以控制聚酯分子量，扩链改性后的产物结晶度下降、力学性能提高、降解性能也得到改善。
Results indicated that changing the proportion between the acid and alcohol could control the molecular weight of the polyesters and the modified poly-(butylenes su…
这些优异性能主要来自于液晶聚酯大分子链的高度刚性。
These superior properties ale related with high chain stiffness of liquid crystalline plastics.
研究和讨论了不同扩链剂、扩链剂的量以及软段分子量对聚酯型聚氨酯弹性体水解稳定性的影响，并引入了参数Q、W。
The effects of different chain extenders, amount of extenders, molecular weights of soft segments on the hydrolysis stability of polyurethane are studied and parameters Q, W are introduced.
在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。
A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process.
在软链段分子量相同时，聚醚为基础的PUU的相分离程度较聚酯为基础的PUU高。
The polyether-based PUU shows the better phase separation than polyester-based with the same molecular weight of soft segment.
用聚酯胶的溶剂对所得产品进行溶取试验并且通过红外光谱分析都证明了链交换反应的存在。
Infrared spectrum analysis can be used to prove the presence of the exchange reaction of chain.
并将谱带的变温行为与液晶转变相关联。结果表明，芳香共聚酯热致性液晶中液晶基元之间的相互作用很强而柔性间隔链之间的相互作用很弱。
The result suggests that the interaction between the mesogenic cores is dominant in forming the mesophase, while the interaction between flexible chain spacers is very weak.
并将谱带的变温行为与液晶转变相关联。结果表明，芳香共聚酯热致性液晶中液晶基元之间的相互作用很强而柔性间隔链之间的相互作用很弱。
The result suggests that the interaction between the mesogenic cores is dominant in forming the mesophase, while the interaction between flexible chain spacers is very weak.
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