IP Library Granted Patent US 11,506,851
Granted Patent B1
US 11,506,851 · App. 16/738,031 · Granted Nov 22, 2022

Cables having buffer elements formed with two-dimensional fillers

Inventors: Bo Xu (Alpharetta, GA); Christopher W. McNutt (Woodstock, GA)
Assignee: Superior Essex International Inc.
G02B6/443H01B7/1875
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Quick Facts
Patent No.
US 11,506,851
App. No.
16/738,031
Granted
Nov 22, 2022
Kind
B1
Abstract

Cables having buffer elements formed with two-dimensional fillers are described. A cable may include at least one optical fiber, and a buffer element may be formed around the at least one optical fiber. The buffer element may be formed from a material that includes a polypropylene-containing polymeric resin, a filler added to the polymeric resin that includes a plurality of two-dimensional particles, and an amphiphilic compatabilizer. A jacket may be formed around the at least one optical fiber and the buffer element.

Claims (16)

1. A cable comprising:

at least one optical fiber; and

a buffer element formed around the at least one optical fiber, the buffer element formed from a material comprising:

a polymeric resin comprising polypropylene;

a filler added to the polymeric resin and comprising a plurality of two-dimensional particles oriented in a longitudinal direction of the buffer element; and

an amphiphilic compatabilizer combined with the polymeric resin and the filler; and

a jacket formed around the at least one optical fiber and the buffer element.

2. The cable of claim 1 , wherein the filler comprises between 0.1 percent and 10.0 percent by weight of the material.

3. The cable of claim 1 , wherein the filler comprises at least one of (i) layered silicates (ii) exfoliated silicate platelets, (iii) nanographene platelets, (iv) graphite oxide, (v) double hydroxide tactoids, (vi) metal oxide nanosheets, or (vii) carbon nanowalls.

4. The cable of claim 1 , wherein the two-dimensional particles comprise layered particles.

5. The cable of claim 1 , wherein the filler comprises a first filler, and wherein the material further comprises a second filler comprising at least one of (i) components in the shape of tubes or (ii) components in the shape of fibers.

6. The cable of claim 1 , wherein the compatabilizer comprises between 0.1 percent and 20.0 percent by weight of the material.

7. The cable of claim 1 , wherein the compatabilizer comprises one of (i) polypropylene grafted maleic anhydride or (ii) polyethylene grafted maleic anhydride.

8. The cable of claim 1 , wherein the polymeric resin comprises a co-polymer of polypropylene and polyethylene.

9. The cable of claim 1 , wherein the polymeric resin comprises nucleated polypropylene.

10. The cable of claim 1 , wherein the buffer element comprises one of (i) a tight-buffer layer or (ii) a loose buffer tube.

Assignments (5)
SECURITY INTEREST Recorded Aug 27, 2025
From: SUPERIOR ESSEX INTERNATIONAL INC.; ESSEX BROWNELL INC.
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 072614/0436 →
CHANGE OF NAME Recorded Apr 17, 2023
From: SUPERIOR ESSEX INTERNATIONAL LP
To: SUPERIOR ESSEX INTERNATIONAL INC.
Reel/Frame 063351/0561 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 13, 2022
From: XU, BO; MCNUTT, CHRISTOPHER W.
To: SUPERIOR ESSEX INTERNATIONAL LP
Reel/Frame 061415/0720 →
SECURITY INTEREST Recorded Oct 1, 2020
From: SUPERIOR ESSEX INTERNATIONAL LP; ESSEX BROWNELL LLC
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 053968/0640 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 9, 2020
From: XU, BO; MCNUTT, CHRISTOPHER W.
To: SUPERIOR ESSEX INTERNATIONAL LP
Reel/Frame 051460/0635 →