Abstract:

The industrial scale production for a film⁃grade PE⁃HD resin with a commercial brand of ACP7000F was successfully carried out on a Hostalen ACP industrial installation with a yield of 350 kt·a^-1 using a BCE⁃H200 catalyst. The general performance of the resultant PE⁃HD resin and its film as well as the catalyst was evaluated by melt flow rate， gel permeability chromatography， and mechanical measurements. The experimental results indicated that the BCE⁃H200 catalyst had higher activity， more stable hydrogen response， and excellent copolymerization ability. Compared to the control catalyst， the activity of the BCE⁃H200 catalyst was improved by 87.5 %， resulting in a decrease in the hydrogen consumption by 12.5 % and in the butene⁃1 consumption by 13.1 %. The obtained PE⁃HD resin by using the BCE⁃H200 catalyst shows a large particle size， less fine particles， better mechanical properties， and less gel under a high load. Such performance can meet the production standard. The BCE⁃H200 catalyst can be used to replace the imported catalysts for producing the high⁃performance film⁃grade PE⁃HD resin. In addition， the evaluation on the gel from the control film indicated that the gel was composed of the PE with high molecular weight and low crystallinity.

Key words: high density polyethylene, BCE?H200 catalyst, film resin, gel