A series of bridged ligand 4,4′-methylene-bis [2,6-dialkyl-N-(2-phenylmethylene)-anil] was efficiently synthesized by the condensation reaction of 4,4′-methylene-bis(2,6-disubstituted aniline) and salicyl aldehyde.T...A series of bridged ligand 4,4′-methylene-bis [2,6-dialkyl-N-(2-phenylmethylene)-anil] was efficiently synthesized by the condensation reaction of 4,4′-methylene-bis(2,6-disubstituted aniline) and salicyl aldehyde.They easily coordinated with Ni (Ⅱ) to form the title complexes,which were characterized by IR spectroscopy and elemental analysis.The complexes show good activities for vinyl polymerization of norbornene with methylalumoxane (MAO) as co-catalyst.The variations of complexes and catalytic parameters were investigated along with viscosimetric measurement of resultant polynorbornenes.展开更多
用新型铑-钌双金属催化剂制备了氢化丁腈橡胶(HNBR),分析了产物基本性能,并与国外同类产品进行了对比。结果表明,HNBR的相对分子质量较基础胶有所提高;与德国Bayer公司的Ther-ban A 3406和日本Zeon公司的Zetpol 2000 L相比,其物理机械...用新型铑-钌双金属催化剂制备了氢化丁腈橡胶(HNBR),分析了产物基本性能,并与国外同类产品进行了对比。结果表明,HNBR的相对分子质量较基础胶有所提高;与德国Bayer公司的Ther-ban A 3406和日本Zeon公司的Zetpol 2000 L相比,其物理机械性能和耐油性能基本相当,在通常的剪切速率范围内的流变性能也相近。展开更多
文摘A series of bridged ligand 4,4′-methylene-bis [2,6-dialkyl-N-(2-phenylmethylene)-anil] was efficiently synthesized by the condensation reaction of 4,4′-methylene-bis(2,6-disubstituted aniline) and salicyl aldehyde.They easily coordinated with Ni (Ⅱ) to form the title complexes,which were characterized by IR spectroscopy and elemental analysis.The complexes show good activities for vinyl polymerization of norbornene with methylalumoxane (MAO) as co-catalyst.The variations of complexes and catalytic parameters were investigated along with viscosimetric measurement of resultant polynorbornenes.
文摘用新型铑-钌双金属催化剂制备了氢化丁腈橡胶(HNBR),分析了产物基本性能,并与国外同类产品进行了对比。结果表明,HNBR的相对分子质量较基础胶有所提高;与德国Bayer公司的Ther-ban A 3406和日本Zeon公司的Zetpol 2000 L相比,其物理机械性能和耐油性能基本相当,在通常的剪切速率范围内的流变性能也相近。
