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US 10,538,682 B2Granted
Polyolefin compounds for cable coatings
AssigneeDow Global Technologies LLC
InventorDay-Chyuan Lee
Life of this patent
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Abstract
Polymeric compositions comprising a blend of high-density polyethylene (“HDPE”) with ethylene vinyl acetate (“EVA”), and optionally with a carbon black and/or one or more other additives, where the polymeric compositions have certain melt-index and vinyl-acetate-content ranges to improve melt strength and processability. Such polymeric compositions can be employed in manufacturing coated conductors, such as fiber optic cables.
Claims15
A coated conductor comprising:
- (a) a conductor;
- and
- (b) a polymeric composition surrounding at least a portion of said conductor,
- wherein said polymeric composition comprises a high-density polyethylene and an ethylene vinyl acetate,
- wherein said polymeric composition has a vinyl acetate content in the range of from 1.5 to 8 weight percent, based on the combined weight of said high-density polyethylene and said ethylene vinyl acetate,
- wherein said polymeric composition has a melt index (I2) in the range of from 1.3 to 1.9 g/10 minutes or less.
3 more elements
A coated conductor comprising:
- (a) a conductor;
- and
- (b) a polymeric composition at least partially surrounding said conductor, said polymeric composition consisting of:
- (i) a high-density polyethylene,
- (ii) an ethylene vinyl acetate, and
- (iii) optionally one or more additives selected from the group consisting of carbon blacks, carrier resins, flame retardants, processing aids, nucleating agents, foaming agents, crosslinking agents, fillers, pigments or colorants, coupling agents, antioxidants, ultraviolet stabilizers, tackifiers, scorch inhibitors, antistatic agents, slip agents, plasticizers, lubricants, viscosity control agents, anti-blocking agents, surfactants, extender oils, acid scavengers, metal deactivators, and vulcanizing agents,
- wherein said polymeric composition has a vinyl acetate content in the range of from 1.5 to 8 weight percent, based on the combined weight of said high-density polyethylene and said ethylene vinyl acetate,
- wherein said polymeric composition has a melt index (I2) in the range of from 1.3 to 1.9 g/10 minutes or less.
5 more elements
Dependencies are inferred from the claim text.