POLYOLEFIN COMPOUNDS FOR CABLE COATINGS Russian patent published in 2020 - IPC H01B7/18

Abstract RU 2714445 C2

FIELD: chemistry.

SUBSTANCE: invention relates to polymer compositions containing a mixture of high density polyethylene (HDPE) with ethylene vinyl acetate (EVA) and, optionally, soot and/or one or more other additives, wherein said polymer compositions are used as coatings for cables. Coated conductor comprises a conductor and a polymer composition around at least a portion of said conductor. Polymer composition contains high density polyethylene and ethylene vinyl acetate. Content of vinyl acetate in said polymer composition ranges from 1.5 to 8 weight percent based on the total weight of said high-density polyethylene and said ethylene vinyl acetate. Polymer composition has melt flow index (I₂) from 1.3 to 1.9 g/10 minutes, wherein said ethylene vinyl acetate has vinyl acetate content of 18 to 28 weight percent relative to the total weight of said ethylene vinyl acetate.

EFFECT: invention enables to obtain a coating with improved strength and process characteristics.

15 cl, 2 tbl

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RU 2 714 445 C2

Authors

Li Daj-Chuan

Dates

2020-02-17—Published

2016-02-03—Filed