US 12,240,970 B2
Polymeric compositions for optical fiber cable components
Karl M. Seven, Auburn, PA (US); Mohamed Esseghir, Lawrenceville, NJ (US); and Jeffrey M. Cogen, Flemington, NJ (US)
Assigned to Dow Global Technologies LLC, Midland, MI (US)
Appl. No. 17/634,402
Filed by Dow Global Technologies LLC, Midland, MI (US)
PCT Filed Nov. 3, 2020, PCT No. PCT/US2020/058634
§ 371(c)(1), (2) Date Feb. 10, 2022,
PCT Pub. No. WO2021/096723, PCT Pub. Date May 20, 2021.
Claims priority of provisional application 62/933,708, filed on Nov. 11, 2019.
Prior Publication US 2022/0298345 A1, Sep. 22, 2022
Int. Cl. C08L 23/26 (2006.01); B29C 48/00 (2019.01); B29C 48/05 (2019.01); C08L 23/06 (2006.01); B29K 23/00 (2006.01)
CPC C08L 23/26 (2013.01) [B29C 48/022 (2019.02); B29C 48/05 (2019.02); C08L 23/06 (2013.01); B29K 2023/065 (2013.01); C08L 2207/062 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method, comprising the steps:
blending a polymeric composition, comprising:
(a) 5 wt % to 45 wt % of a silanol-functionalized polyolefin based on a total weight of the polymeric composition, wherein the silanol-functionalized polyolefin is an ethylene-silane copolymer comprising silane monomer incorporated into a polymer backbone of the ethylene-silane copolymer;
(b) 55 wt % to 90 wt % of a polybutylene terephthalate based on a total weight of the polymeric composition having a melt flow index from 21 g/10 min. to 35 g/10 min. at 250° C. and 2.16 kg;
(c) a condensation catalyst;
(d) 0.5 wt % to 10 wt % of hydroxy terminated poly(dimethylsiloxane) based on a total weight of the polymeric composition;
(e) 0.1 wt % to 10 wt % maleated ethylene-based polymer based on a total weight of the polymeric composition; and
(f) 5 wt % to 25 wt % of a high-density polyethylene in the polymeric composition based on a total weight of the polymeric composition and wherein the high-density polyethylene has a density of from 0.94 g/cc to 0.98 g/cc as measured according to ASTM D792; and
extruding the polymeric composition.