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US 10,502,913 B2Granted
Polymeric compositions for optical fiber cable components
AssigneeDow Global Technologies LLC
InventorsWilliam J. Harris, Mohamed Esseghir, Gangwei Sun
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Abstract
Polymeric compositions comprising a polybutylene terephthalate, an ethylene-based polymer, and a maleated ethylene-based polymer. Optical cable components fabricated from the polymeric composition. Optionally, the polymeric composition can further comprise one or more additives, such as a filler. The optical fiber cable components can be selected from buffer tubes, core tubes, and slotted core tubes, among others.
Claims4
A polymeric composition, comprising:
- 60 weight percent to 70 weight percent of a polybutylene terephthalate;
- 25 weight percent to 40 weight percent of an ethylene-based polymer having a density of at least 0.945 g/cm3;
- and
- 0.5 weight percent to 5 weight percent of a maleated ethylene-based polymer having a density of at least 0.93 g/cm3,
- wherein the polymeric composition exhibits:
- a grease-aged Young's modulus in the range of from 1,000 to 2,400 MPa;
- a notched Izod impact strength at −20° C. of at least 40 J/m;
- and
- a weight increase of less than 2 weight percent when immersed in LT410A optical grease at a depth of 40 mils and maintained at an air temperature of 80° C. for a period of 16 days.
6 more elements
Dependencies are inferred from the claim text.