Development of Condensative Chain Polymerization in Biphase

受控结构的聚合物和材料的合成是工业和学术研究中当前的利益。在聚合物条件下，如何，聚合物的聚合物具有确定的分子重量和狭窄的分子重量分布没有被合成，因为聚合物条件过程在步骤增长反应指示器中。我们已经提出了一种方法，以实现受控的多饱和度的形成，该方法将多饱和度的所有相关要求置于一个像启动者一样的活聚合度。我们称之为“聚合”的“聚合链聚合”。成功的条件性链聚合化是一个重要的事情，它可以防止单体的反应，每个人都以正常的步骤聚合化。这将是一条通往条件链聚合物的吸引力路径，这将是一条通往相变转移催化剂（PTC） ... More merizations。因此，单体在水中或固体不会与每个其他单体和单体转移到有机溶剂中反应，PTC将与启动剂和/或聚合物和组在有机溶剂中反应。在水中二氯甲烷中的钾4-溴甲基-2-n-octyloxybenzoate 1的多条件下，分子权重由1/启动剂的饲料速率控制，但分子权重分布是宽的。在多条件1与18冠-6或丙酮中的四戊二胺碘化胺中，具有确定的分子权重和窄分子权重分布的聚合物（My D2 wie D2/My D2 n wie D2 < 1.3）被发现。The molecular weights increased in proportion to conversion， and the M-D2were less than 1.3 over the whole conversion range。The Ratios of end group to initiator agreed with the features of living polymerizations of vinyl monomers and cyclic monomers。顺便说一下，一个过程的聚合条件不是在一个步骤聚合物化指示器中，而是在一个链聚合物指示器中。Less（低）

Synthesis of polymers and materials of controlled architectures is of current interest in both industrial and academic research. In polycondensation, however, polymers of having a defined molecular weight and a narrow molecular weight distribution have not been synthesized, because polycondensation proceeds in a step-growth reaction manner. We have proposed that one of approaches to controlled polycondensation with the formation of that fulfill all of the above-mentioned requirements to make polycondensation proceed in a chain-growth reaction manner from an initiator like living polymerizations. We call this type polycondensation "Condensative Chain Polymerization" according to the recent IUPAC recommendations. An important thing for successful condensative chain polymerizations is to prevent the reaction of monomer with each other leading to ordinary step polycondensations. It occurred to us that the phase transfer catalyst (PTC) would be an attractive route to condensative chain poly … More merizations. Thus, monomer in water or as solid does not react with each other and the monomer transferred to organic solvent with PTC would react with an initiator and/or the polymer and group in organic solvent.In the polycondensation of potassium 4-bromomethyl-2-n-octyloxybenzoate 1 in water dichloromethane, the molecular weights were controlled by the feed ratios of 1/initiator, but the molecular weight distributions were broad. In the polycondensation 1 with 18-crown-6 or tetrabutylammonium iodide in acetone, polyesters with a defined molecular weight and a narrow molecular weight distribution(MィイD2wィエD2/MィイD2nィエD2 < 1.3) were obtained. The molecular weights increased in proportion to conversion, and the MィイD2wィエD2/MィイD2nィエD2 ratios were less than 1.3 over the whole conversion range. The ratios of end group to initiator agreed with the features of living polymerizations of vinyl monomers and cyclic monomers. Consequently, the polycondensation of 1 proceeds not in a step polymerization manner but in a chain polymerization manner. Less