1) block polycondensation
嵌段缩聚
2) block copolycondensation
嵌段共缩聚
1.
In this paper, the novel photosensitive prepolymers were synthesized by the block copolycondensation of unsaturated polyester with epoxy resin.
提出了一种由不饱和聚酯和环氧树脂嵌段共缩聚,合成一类新型光敏预聚物的方法。
2.
the first step is to prepare the unsaturated polyesters having certain molecular weight and terminated by carboxyl; the second step is to prepare prepolymers by block copolycondensation of the above polyesters with epoxy resin.
提出了一种由不饱和聚酯和环氧树脂嵌段共缩聚 ,合成一类新型光敏预聚物的方法。
3) block copolymerization
嵌段共聚
1.
Dibromomethylbenzene has been successfully used as new difunctional initiator in the atom transfer radical block copolymerization of styrene(St) and ethyl methacrylate(EMA) or butyl methacrylate(BMA), methyl methacrylate(MMA) and BMA.
合成了对二溴甲基苯作为原子转移自由基聚合的双官能团引发剂 ,以对二溴甲基苯 /溴化亚铜 /联吡啶 (摩尔比 1/ 2 / 4 )为引发体系 ,进行极性单体甲基丙烯酸酯和非极性单体苯乙烯及不同的甲基丙烯酸酯之间的原子转移自由基嵌段共聚 ,得到了实测分子量与设计分子量相近 ,分子量分布小于 1。
2.
In this paper, block copolymerization of ethylene oxide and propylene oxide, properties and application of copolyethers were discussed.
本文主要叙述环氧丙烷(PO)与环氧乙烷(EO)的嵌段共聚方法及其主要产品的性能和一些用途,重点介绍了Pluronic多元醇及REP、RPE及无规聚醚的合成,提出了发展聚醚型非离子表面活性剂的建议,供开发、生产、使用聚醚的单位、工厂参考。
3.
The characterization of the tri-block copolymerization products was carried out using viscometry,gel permeation chromatography,FT-IR and 1HNMR.
以LiOH为引发剂、DMF为促进剂,D4、P4、V4为单体,采用阴离子开环聚合方法,合成了特定分子结构的高分子量三元嵌段共聚硅橡胶。
4) block polyether
嵌段聚醚
1.
Synthesis of block polyether demulsifiers and demulsification rule;
嵌段聚醚破乳剂的合成及破乳规律
5) Block copolyether
嵌段聚醚
1.
Compared with random copolyethers,the wetting ability,emulsifying power,foam disappearing rate and solidifying temperature of block copolyethers BPE with PO block connecting to butoxyl group increase respectively by 30 times,1 time,4 times and 36 ℃,meanwhile the cloud point,surface tension,foaming ability and heat stability decrease by 32 5 ℃,8 2 mN/m,1 5 times and 55% .
与无规聚醚相比 ,PO嵌段与丁氧基相连的全嵌段聚醚BPE的润湿速度、乳化力、泡沫消失速度和凝固点分别提高 30倍、1倍、4倍和 36℃ ,浊点、表面张力、形成泡沫高度和热稳定性分别降低 32 5℃、8 2mN/m、1 5倍和 5 5 %。
2.
A EO/PO block copolyether surfactant DC218 was synthesized by the sequential addition first of propylene oxide and then ethylene oxide to propylene glycol initiator in the presence of a new type of catalyst.
以丙二醇为起始剂 ,在新型乙氧基化催化剂存在下合成出 EO/PO嵌段聚醚型表面活性剂。
补充资料:聚丙烯/苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物共混物
分子式:
CAS号:
性质: 系由聚丙烯为主,以苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物(SEBS)作冲击改性剂组成的共混物,具有较高的冲击强度和低温韧性,由于SEES不饱和程度低于SBS,因此耐老化性较好,可用于户外使用的制品,其制法同PP/SBS。
CAS号:
性质: 系由聚丙烯为主,以苯乙烯-乙烯-丁烯-苯乙烯嵌段共聚物(SEBS)作冲击改性剂组成的共混物,具有较高的冲击强度和低温韧性,由于SEES不饱和程度低于SBS,因此耐老化性较好,可用于户外使用的制品,其制法同PP/SBS。
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