缩聚

• The amount of catalyst can be reduced by selecting nice solvability catalyst , cutting down the remnant carboxyl amount of esterification and elevating polycondensation temperature
  选择溶解性能好的催化剂，降低酯化残存羧基量，提高缩聚温度，可减少催化剂用量。
• Flexible insulating sleeving - part 3 : specification for individual types of sleeving - sheet 213 : heat - shrinkable polyolefin sleeving , not flame retarded , shrink ratio 2 : 1
  绝缘软套管.第3部分:各种型号套管的规范.第213活页:热缩聚烯烃套管.非火焰回缩,热缩比率2 : 1
• The feature and concentration calculations of volatile species are discussed , and modeling methods and running outcome of the model have also been introduced
  文章讨论了预缩聚和终缩聚阶段中副产物小分子的脱出特点及挥发量的计算，最后介绍了建模方法和模型现场运行结果。
• 3 . a kind of novel pu with nonlinear optical conjugated group was synthesized by poiymerization . these polymers were characterized using ft - ir , uv , 1h - nmr and vpo
  采用缩聚的方法合成了一系列含非线性长侧链的聚氨酯，并通过~ 1h - nmr 、 ft - ir 、 uv和vpo等方法对聚合物的结构进行了表征。
• Flexible insulating sleeving - part 3 : specifications for individual types of sleeving ; sheet 214 : heat - shrinkable polyolefin sleeving , not flame retarded , shrink ratio 3 : 1 ; thick and medium wall
  绝缘软套管.第3部分:各种型号套管的规范.第214活页:不耐火的热缩聚烯烃套管.热缩比率3 : 1 .厚和中壁
• In chapter 1 of this paper , simply introduces material polymer materials , organometallic polycondensate , organometallic coordination polymer and organometallic polymeric magnetic materials
  本文第一章简要介绍了材料、高分子材料、金属有机高分子材料、金属有机缩聚高分子、金属有机配位聚合物和金属有机高分子磁性材料。