The present invention generally relates to a dielectric composition which is a poly-α-olefin or poly(co-ethylene-α-ol-efin) having a backbone weight average molecular weight less than 10,000 daltons. The dielectric composition uses a metal-ligand complex as a precatalyst and exhibits a hyperbranched structure that enables low viscosity, and therefore good flow characteristics, combined with high fire point due to ability to increase molecular weight via branching rather than backbone growth. Other desirable properties include lowered pour point due to crystallization disruption, and desirable thermal oxidative stability.
本发明通常涉及一种介电组合物,其为具有骨架重量平均分子量小于10,000道尔顿的聚α-烯烃或聚(共聚
乙烯-α-烯烃)。该介电组合物使用
金属
配体复合物作为前催化剂,并表现出超支化结构,从而实现低粘度和良好的流动特性,同时由于能够通过支链而不是骨架生长来增加分子量,因此具有高的防火点。其他理想的特性包括由于结晶破坏而降低了浇注点,并具有理想的热氧化稳定性。