2) cyclic oligomer
环状低聚物
1.
Three amorphous aromatic polyether sulfone(ketone)s with different structures underwent a cyclo-de~po~ly~meri~zation reaction using CsF as the catalyst in dipolar aprotic solvents such as DMAc and DMF to afford corresponding cyclic oligomer products.
几种线性高分子量的无定型聚芳醚砜 (酮 )在非质子极性溶剂二甲基乙酰胺 (DMAc)和二甲基甲酰胺 (DMF)中 ,以氟化铯 (CsF)为催化剂进行解聚成环 ,所得环状低聚物由凝胶渗透色谱 (GPC)、高效液相色谱 (HPLC)和激光质谱 (MALDI TOF MS)确认 ,其中酚酞聚醚砜 (PES C)和酚酞聚醚酮 (PEK C)的解聚成环率分别高达 86。
3) Cyclic oligomers
环状低聚物
1.
Cyclic oligomers of poly(trimethylene terephthalate)(PTT) were prepared by reaction of 1,3 propanediol with terephthaloyl chloride(TPC) under diluted conditions and separated from the linear products by silica gel column.
探索了由对苯二甲酰氯和 1 ,3-丙二醇在“假高稀”条件下合成聚 (对苯二甲酸 -1 ,3-丙二酯 ) ( PTT)环状低聚物的可行性 。
2.
In view of several hazards of cyclic oligomers in PET,several characterization of cyclic oligomers were reviewed.
鉴于环状低聚物的诸多危害,归纳了PET中环状低聚物的表征方法,具体介绍了低聚物的分离方法及其性能的研究方法,重点总结了目前减少环状低聚物含量的一些新的措施和方法,以期为今后的相关研究提供参考,并提出应该建立工业上简便易行的环状低聚物含量检测方法。
4) triazine oligomer
三嗪环低聚物
1.
A phosphorus-containing triazine oligomer was synthesized from triethyl phosphite,cyanuric chloride,pentaerythritol and morpholine through three steps.
以亚磷酸三乙酯、三聚氰氯、季戊四醇和吗啉为原料,经3步反应合成了含磷三嗪环低聚物,考察了反应条件对中间体及产物收率的影响,对中间体及产物的结构和热性能进行了表征。
5) cyclodextrin oligomer
环糊精低聚物
6) PMPT
三嗪环低聚物(PMPT)
1.
Flame retarded PP ( FR-PP) was prepared and the effects of the content of APP/PER/PMPT ( phosphoruscontaining triazine oligomer) on the mechanical property, thermal degradation and LOI of FR-PP were discussed.
利用自制的三嗪环低聚物(PMPT)及复合阻燃剂制备阻燃聚丙烯材料,研究复合阻燃剂APP/PER/PMPT用量对阻燃PP力学性能、热分解性能的影响,并初步推测阻燃剂PMPT的阻燃机理。
补充资料:环低聚物
分子式:
分子量:
CAS号:
性质:又称环低聚体。分子成环状的低聚物。例如乙炔在压力下,以氯化镍等作催化剂,生成环辛烯。
分子量:
CAS号:
性质:又称环低聚体。分子成环状的低聚物。例如乙炔在压力下,以氯化镍等作催化剂,生成环辛烯。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条