A New Polybutadiene

Ni Shaoru and Tang XuemingChangchun Institute of Applied Chemistry; Academia Sinica

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A New Polybutadiene

更新时间：2025-12-16

- A New Polybutadiene
- CIESC Journal Issue 1, (1983)
- 作者机构：
  
  中国科学院长春应用化学研究所,中国科学院长春应用化学研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 March 1983，
  
  Published：25 March 1983
- 稿件说明：
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Ni Shaoru and Tang XuemingChangchun Institute of Applied Chemistry, Academia Sinica. A New Polybutadiene[J]. CIESC Journal, 1983, (1).
DOI：

Ni Shaoru and Tang XuemingChangchun Institute of Applied Chemistry, Academia Sinica. A New Polybutadiene[J]. CIESC Journal, 1983, (1). DOI：

摘要

MoCI_4OR与适当烷基铝组成的催化体系

对丁二烯聚合有很高的催化活性.在聚合温度为70℃、催化剂用量Mo/Bd比为5×10~(-5)时

转化率可达80%以上.聚合温度为30—70℃范围内所得聚合物分子量分布宽度指数为1.5—2.0.烯丙基卤等极性添加剂可以调节聚合物分子量和链结构

以烯丙基碘效果最好;随着烯丙基碘用量的增加

聚合物分子量降低

2-链节增多

链结构规整性增加.聚合物基本性能是:1

2-链节含量

88-97%;特性粘数

1.8—6.2(dl/g)玻璃化温度

-10—-27℃;屈服强度

6.5—8.5(kg/cm~2);断裂强度

12—25(kg/cm~2)断裂伸长

1700—2900%.

Abstract

High active catalyst system for polymerization of butadiene may be obtained by combining MoCl4OR and proper aluminum alkyl. The conversion of 80% of butadiene can be achieved with 5×10-5 mole of MoCl4OC8H17 per 1 mole of butadiene at 70℃ in hydrogenated gasoline. The polydispersity of the polymer in the range of 1.5-2.0 is carried out with the temperature of polymerization at 30-70℃. For the purpose of regulating molecular weight and chain structure of the polymer allyl halides (allyl iodide) is satisfactory. With the increase of amount of allyl iodide

the molecular weight of the polymer decreases

the content of 1

2-units increases and the regularity of chain structure of the polymer rises. Some of the physical properties of the polymer are as follows: the content of 1

2-unit

88-97%

limiting viscosity number 1.8-6.2(30℃

toluene)

glass temperature

-27--10℃

tensile yield strength

6.5-8.5 (kg/cm2)

ultimate tensile strength

12-25 (kg/cm2) and elongation at break

1700-2900%.

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