COMPOSITE CATALYST FOR PRODUCING POLYETHYLENE, METHOD FOR PRODUCTION THEREOF AND METHOD OF PRODUCING POLYETHYLENE Russian patent published in 2012 - IPC C08F4/02 C08F2/00 C08F10/02 B01J37/25 

FIELD: chemistry.

SUBSTANCE: invention relates to a composite catalyst for producing polyethylene, a method of producing said catalyst, as well as a method of producing polyethylene with wide molecular weight distribution using said composite catalyst. The composite catalyst consists of: (a) a first catalyst deposited on a substrate; (b) a polymer layer coating the first catalyst deposited on a substrate; and (c) a second catalyst deposited inside or on the polymer layer. The first and second catalysts are identical or different and are independently selected from a group consisting of Ziegler-Natta catalysts, chromium-based catalysts, metallocene catalysts, non-metallocene concentric catalysts and precursors thereof. The polymer carries polar functional groups. Content of the polymer ranges from 1 to 50 wt % of the total weight of the composite catalyst.

EFFECT: obtaining a composite catalyst which can be used in production of polyethylene with wide molecular weight distribution.

34 cl, 4 tbl, 3 ex