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1)  low unsaturation
低不饱和度
1.
The problems in production of low unsaturation polyether with DMC catalyst were introduced.
介绍了使用DMC催化剂生产低不饱和度聚醚时存在的问题。
2.
The technical progress and future prospect of several new kinds of polyols are introduced,including free-CFC polyetber,polymer polyol,double metal cyanide(DMC)cata- lysts and polyether polyols with high molecular weight and low unsaturation.
介绍了我国聚醚多元醇工业发展的历史和现状,着重阐述了无氟聚醚多元醇、高分子质量低不饱和度聚醚和聚合物聚醚多元醇等新型聚醚多元醇及其双金属氰化物(DMc)催化剂的研究进展和工业应用。
2)  low unsaturated degree
低不饱和度
1.
A process of purifying polyether polyols with high activity and low unsaturated degree was studied.
对高活性低不饱和度聚醚多元醇的精制进行了研究。
3)  low unsaturated polypropylene glycol
低不饱和度聚醚
1.
Polyurethane(PU) elastomers based on low unsaturated polypropylene glycol(TDB), diisocyanate(MDI or TDI)and chain extender(1,4-BDO or MOCA) were prepared.
研究了以不同相对分子质量的低不饱和度聚醚多元醇、二异氰酸酯(MDI,TDI)和扩链剂(1,4 BDO,MOCA)为原料制备PU弹性体的力学性能。
4)  low saturation
低饱和度
1.
Approach to low saturation heavy oil reservoir genesis in Xinhai 27 Block
新海27块低饱和度稠油油藏成因探讨
2.
In recent years, interpretation of complex reservoir with low porosity, low permeability and low saturation is one of the focuses of oil and gas exploration.
“三低”油气藏,即低孔隙度、低渗透率和/或低饱和度为主要特征的复杂油气藏,已经成为国内外油气勘探开发的焦点。
5)  unsaturation ['ʌnsætʃə'reiʃən]
不饱和度
1.
Low unsaturation polyether synthesized by bimetallic cyanide complex catalysts;
双金属氰化物催化剂合成低不饱和度聚醚
2.
High molecular weight polyether polyols with narrow molecular weight distributions and ultra low levels of unsaturation and high average functionality were obtained using the presence of DMC catalyst.
并用高效的DMC双金属催化剂合成出了分子量高、分子量分布窄、不饱和度低的聚醚多元醇产品,聚醚产品中DMC的质量分数小于2×10-6,最低可达1×10-6。
3.
This paper gives the method of judging the hybridization form of central atomic orbital by unsaturation,applications and its laws.
提出了由分子的"不饱和度"判断中心原子轨道杂化方式的方法、应用及规律。
6)  low unsaturated degree polyether polyols
低不饱和度聚醚多元醇
补充资料:低收缩不饱和聚酯树脂
分子式:
CAS号:

性质:含低收缩添加剂(主要是热塑性树脂)的不饱和聚酯树脂。树脂的体积收缩率可由7%~10%缩小至0.2%。常用的低收缩添加剂按其在苯乙烯中的溶解度分为可溶性添加剂,如聚苯乙烯;不溶性添加剂,如聚乙烯、聚丙烯和乳液法生产的聚氯乙烯;溶胀性添加剂,如氯乙烯-醋酸乙烯共聚物其中聚乙烯、聚丙烯和树脂的相容性差,模压流动性欠佳。由低收缩树脂制得的制品,表面光洁、波纹度小,强度好,收缩率低。主要用于制造片状模塑料和团状模塑料,适于模塑精度要求高的结构部件,供电器、汽车、仪表等部门应用。

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