Industries ss from random copolymers of norbornene type monomers and ethylene polymerizedin a polymer compositions can be obtained by reaction of ring-opened polymers from cyclic abovect-olefin/diene copolymers in the presence of cationic polymerization initiators (Eq.OF CYCLOOLEFINS...
Multiple stage copolymerization reaction methodImproved reaction system in which the reaction is cooled by vaporization of a volatile component, including at least two reaction vessels and a vapor feedback from a downstream reaction vessel to an upstream reaction vessel.SPIEGELMAN, PHILLIP P....
For example, if propagating species A* prefers reaction with monomer B over monomer A and propagating species B* prefers reaction with monomer A over monomer B, then one might expect an alternation of the monomers down the polymer chain (i.e., ABABABABA…). While this may seem unlikely, ...
Reactivity ratio is a traditional parameter quantifying the reaction kinetics in copolymerization, which is important for potentially controlling microstructures of polymers and guiding the copolymerization process. Our recent experiments using tube-NMR technique enable us to in situ monitor the concentration ...
The rate of graftcopolymerizationmarkedly increases with reaction temperature. 反应温度是影响接枝共聚的另一重要因素,增加反应温度可显著加快接枝共聚速度. 互联网 The in situ graftcopolymerizationof starch with D , L - lactide was investigated. 研究了在聚乙二醇(PEG) 存在下,淀粉与丙交酯的原位熔融接枝反应...
(Fig.1). Owing to the strained disulfide bonds of cyclic disulfides33, the copolymerization reaction could be initiated at 120 °C without using any external catalyst. The robustness and sustainability of the reaction are underscored by a green synthesis that is free of solvents, inert gas ...
作者: OF Cycloolefins 摘要: Industries ss from random copolymers of norbornene type monomers and ethylene polymerizedin a polymer compositions can be obtained by reaction of ring-opened polymers from cyclic abovect-olefin/diene copolymers in the presence of cationic polymerization initiators (Eq.收藏...
4) step-reaction polymerization 逐步反应聚合5) step copolymerization 逐步共聚合6) polyaddition [,pɔliə'diʃən] 聚加成反应,逐步加成聚合 (曾用名)补充资料:加聚反应 分子式:CAS号:性质:简称加聚反应。凡含有不饱和键(双键、叁键、共轭双键)的化合物或环状低分子化合物,在催化剂、引发剂或...
The copolymerization reaction is carried out by contacting the mixture of olefin and acetylene with the catalyst at a temperature from 150° C. to 325° C. for sufficient time to obtain a satisfactory amount of reaction product. A preferred temperature is from 250° C. to 300° C., and a...
In contrast to early investigations on radical copolymerization [1], abounding experimental data accumulated during the last two decades has made it possible to establish an unequivocal effect of the reaction medium in at least some monomer systems.doi:10.1080/00222358108080015...