α-蒎烯和间戊二烯共聚工艺

Copolymerization Technology of α-Pinene and 1,3-Pentadiene

研究了共聚反应条件对α-蒎烯(α-P)和间戊二烯(PD)共聚产物的影响,确定最佳反应条件为:反应时间2 h,原料比例n(α-P)∶n(PD)=1∶2,反应温度15℃,溶剂甲苯,催化剂AlCl3用量为单体总质量1%,获得产物树脂的收率为72.3%,软化点为121.3℃,色度为4,相对分子质量为1549,相对分子质量分布为1.92。其热稳定性和粘结相容性好。

The technology to prepare copolymeric resins was described by use of α-pinene （c-P） and 1,3-pentadiene（PD） as monomers and Louis acid as the catalyst.The effect of reaction temperature,reaction time,catalyst concentration,ratio of α-pinene to 1,3-pentadiene on copolymerization was discussed.The optimized reaction condition is as follows：reaction temperature 15 ℃,reaction time 2 h,solvent toluene,m （catalyst） ∶ m （α-P and PD） =1％,n （α-P） ∶ n （PD） =1 ∶ 2.The product yield,softening point,Chroma,Mn,and relative molecular mass distribution（MWD） are 72.5％,121.3 ℃,4,1549,and 1.92,respectively.The product has good thermal stability and adhesion compatibility.