ring opening polymerization

The applications of quaternary ammonium salt and crown ether as phase transfer catalysts for the nucleophilic substitution , anionic ring opening polymerization , and free radical polymerization are introduced .

介绍了季铵盐类及冠醚类相转移催化剂在高聚物的亲核取代反应、阴离子开环聚合反应及自由基聚合反应中的应用。

According to the mechanism of coordinate anionic polymerization , ring opening polymerization of epoxide catalysed by metalloporphyrin affords a polymer having a controlled molecular weight of narrow distribution .

按照阴离子配位机理金属卟啉络合体系在引发环状化合物的开环聚合，形成窄分布，可控分子量聚合物方面具有显著优越性。

Chitosan supported rare earth catalyst for the ring opening polymerization of epichlorohydrin

壳聚糖载体&钇络合催化环氧氯丙烷开环聚合

Ring opening polymerization of tetrahydrofuran with rare earth catalysts

稀土催化四氢呋喃开环聚合

Study on ring opening polymerization of 2 substituted 4 methylene 1,3 dioxolane

2-位取代的4-亚甲基-1,3-二氧环戊烷开环聚合反应研究

Metal-Free Initiator / Catalyst Systems for the Ring Opening Polymerization of Cyclic Ester Monomers

用于环酯单体开环聚合的无金属引发/催化体系

Different molecular weight linear aliphatic polyester PCL were synthesised by ring opening polymerization on the different reaction conditions .

在不同反应条件下采用开环聚合合成具有不同分子量的线性脂肪族聚酯PCL。

Microwave-Assisted Ring Opening Polymerization of Caprolactone and Lactide

己内酯和丙交酯的微波辅助开环聚合反应

By using cadmium acetate as catalyst , polyitaconic anhydride was prepared through ring opening polymerization of itaconic anhydride .

以衣康酸为原料合成了衣康酸酐，并在乙酸镉的催化作用下通过开环聚合得到了聚衣康酸酐。

Ring opening polymerization of ε caprolactone by bis ( aryloxo ) lanthanide (ⅱ) complexes

二（芳氧基）稀土（Ⅱ）配合物催化ε-己内酯开环聚合

Investigation of ring opening polymerization of propylene oxide (ⅱ) average molecular weight and degree of unsaturation of polyols under batch and semicontinuous operating conditions

环氧丙烷开环聚合反应的工程研究（Ⅱ）间歇和半连续操作时聚醚的数均分子量和双键度

Synthesis and Free-radical Ring Opening Polymerization of Macrocyclic Aryl Thioether Ether Ketone ( sulfone ) Oligomers

聚硫醚醚酮（砜）芳香环状低聚物的合成与自由基开环聚合

Secondly , the ring opening polymerization of lactide was carried out in the bulk by initiating with stannous octoate .

并以其为聚合反应的单体，用辛酸亚锡做引发剂，在现有真空条件下，开环聚合生成聚乳酸。

The 1H NMR , 13 C NMR and IR data as well as elementary analyses of the obtained polymers indicated that it underwent double ring opening polymerization .

聚合产物的1HNMR、13cNMR、IR及元素分析数据，均表明发生的是双开环聚合反应。

This work is related with the synthesis and epoxidation of hyperbranched polyesters from the ring opening polymerization of multifunctional acid anhydride and epoxy compounds .

本文研究了以多元酸酐和环氧化合物的开环聚合制备超支化聚酯，通过超支化聚酯的环氧化合成环氧化超支化聚酯的方法。

Compared with the traditional synthetic method through ring opening polymerization of lactide , the direct polycondensation method is simpler and more efficient to produce polylactic acids biodegradable material .

与传统的采用丙交酯单体开环聚合法相比，直接缩合法使合成流程缩短，工艺简化，有利于聚乳酸及其衍生物产品的开发和应用。

Synthesis and Ring Opening Polymerization of Optically Active 4 ( S ) 2 Methy 1 4 Methoxycarbony 1 2 Oxazoline

光学活性4（S）-2-甲基-4-甲氧羰基-2-恶唑啉的合成和开环聚合

At present , the major method to synthesize polyester is the ring opening polymerization ( ROP ) of cyclic ester monomer with the metal alkoxides as initiators .

目前合成聚酯的方法主要是利用金属配合物催化/引发环化酯单体开环聚合。

Study on the preparation of high molecular weight poly ( ferrocenyl dimethylsilane ) through thermal ring opening polymerization and poly ( ferrocenyldimethylsilane ) / tcne charge transfer complex

热开环聚合制备高分子量二茂铁基聚二甲基硅烷及其与四氰基乙烯生成电荷转移络合物的研究

The results showed that products of NCA ring opening polymerization initiated by MPEG-NH 2 were block copolymers . Their block contents and number-average molecular weights were calculated from 1H-NMR .

结果表明，MPEGNH2引发NCA开环聚合得到的是嵌段共聚物，通过1HNMR谱得到共聚物组成及数均分子量；

The ring opening polymerization of aminoacid N-carboxyanhydrides ( NCAs ) was applied to the synthesis of cylindrical polypeptide brushes by using the " grafting from " technique .

本文通过“胺”引发氨基酸酸酐开环聚合机理及“表面接枝”路线合成柱状多肽分子刷。

The ring opening polymerization ( ROP ) of cyclic ester monomers in the presence of various initiator / catalyst systems is a main approach for the preparation of biodegradable aliphatic polyesters .

环酯单体在不同引发/催化体系作用下的开环聚合是制备可生物降解脂肪族聚酯的主要方法。

The synthesis of oxyethylene oxypropylene copolyethers used for quenchant was studied by using anionic ring opening polymerization , diol or triol as the starting agent and KOH as the catalyst .

研究了以KOH为催化剂，二元或三元醇为起始剂，采用阴离子开环聚合合成淬火剂用共聚醚。结果表明：产物的分子量随起始剂和杂质量的减少而增加；

The synthesis technology of silicone microemulsion , the particle diameter of which does not exceed 0.15 micrometers , by means of pre emulsion and then ring opening polymerization of octamethylcyclotetrasiloxane ( D 4 ) is described in this paper .

本文介绍了由八甲基环四硅氧烷（以下简称D4），通过预乳化再开环聚合制得粒径小于0.15μm的有机硅微乳液的合成工艺。

A process of taking sugar and polyols as initiating materials , choosing an optimum prescription , and under a condition with alkaline catalyst , to get a new variety of low cost rigid foam polyether by ring opening polymerization of epoxy propane has been presented in the article .

以糖和多元醇为主要起始剂，选择最佳的配比，在碱性催化剂存在的条件下，由环氧丙烷开环聚合生产低成本的硬泡聚醚新品种。

Ring - Opening Polymerization of Propylene Oxide by Double Metal Cyanide Catalyst at Low Temperature

DMC催化环氧丙烷低温开环聚合

Studies on the ring - opening polymerization of tetrahydrofuran

四氢呋喃开环聚合的研究

Study on Anionic Ring - opening Polymerization of D_4 in Miniemulsion

D4阴离子开环细乳液聚合规律的研究

Cationic ring - opening polymerization of tetrahydrofuran in the presence of promotor and water

四氢呋喃阳离子开环聚合的研究&聚合促进剂及水的影响

Advances in the study on ring opening metathesis polymerization of norbornene and its derivatives

降冰片烯及其衍生物开环易位聚合的研究进展