The properties of low molecule dimeric dibasic acid polyamide resin were improved by chemical modified in mass polymerization.
用本体聚合的方法，通过化学改性，使低分子二聚酸聚酰胺树脂的性能得到大幅度提高。
The molecular weight distribution of the product provided by the present invention is narrower than the product provided by the mass polymerization.
本发明所得产品的分子量分布较本体聚合所得者狭窄。
Ultra high relative molecular mass cross-linked alkene polymer was synthesized by bulk polymerization using metal complex as catalyst and 1, 5-hexadiene as cross-linking agent.
以金属配合物为催化剂、1,5 -己二烯为交联剂，采用本体聚合法合成了交联超高相对分子质量烯烃类聚合物(简称交联聚合物)。
Polytetrahydrofuran (PTHF) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst.
以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃(PTHF)。
Polytetrahydrofuran (PTHF) with narrow molecular mass distribution was prepared by cationic ring-opening polymerization of tetrahydrofuran using H_2SO_4 · SO_3-HClO_4 system as a catalyst.
以发烟硫酸-高氯酸为催化剂，通过四氢呋喃的阳离子开环聚合合成了窄分子量分布的聚四氢呋喃(PTHF)。
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