NEW CATALYTIC SYSTEMS FOR THE FIXATION OF CO_2 Ⅲ.INFLUENCE OF ADDITIVES AND REACTION MEDIUM ON THE C

• 作 者: 陈仙海 张一烽 沈之荃
• 机 构: Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027,Department of Po
• 出 处: Chinese Journal of Polymer Science
• 发表日期: 1994年01期
• 关键词: copolymer dioxide carbonyl coincidence anionic polar Al i-Bu moderate anhydride

Copolymerization of carbon dioxide with epichlorohydrin was successfully carried out by usingNd(P_(204))_3-Al(i-Bu)_3 as catalyst (P_(204))=(RO)_2 POO--,R=CH_3 (CH_2),CH(C_2H_5) CH_2--). Addi-tion of carbonyl compounds into the catalyst decreased the carbon dioxide content of the copoly-mer to some extent. Compared to nonpolar solvents, ethereal and moderate polar solvents werefavourable to obtaining higher carbon dioxide content copolymer. The coincidence of these resultswith the assumed copolymerization scheme clearly indicated that the copolymerization proceeds via coordinate anionic mechanism.

Copolymerization of carbon dioxide with epichlorohydrin was successfully carried out by using Nd (P_ (204)) _3-Al (i-Bu) _3 as catalyst (P_ (204)) = (RO) _2 POO-, R = CH_3 , CH (C_2H_5) CH_2--). Addi-tion of carbonyl compounds into the catalyst decreased the carbon dioxide content of the copoly-mer to some extent. Compared to nonpolar solvents, ethereal and moderate polar solvents were capable to acquiring higher carbon dioxide content copolymer. The coincidence of these results with the assumed copolymerization scheme clearly indicated that the copolymerization exists via the coordinate anionic mechanism.