# US 11,299,616 B2 · Moisture-cured wire and cable constructions

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- Number: US 11,299,616 B2
- Document ID: US11299616B2
- Status: Granted
- Kind: B2
- Application number: 16/622,273
- Filed: 2018-06-06
- Published: 2020-07-02
- Granted: 2022-04-12
- Earliest claimed: 2017-06-29
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Bharat I. Chaudhary; Manish Talreja; Yichi Zhang; Santosh S. Bawiskar; Peter C. Dreux; Manish K. Mundra; Abhijit Ghosh-Dastidar; Rajen M. Patel; Kalyan Sehanobish; Chieh Ying Heah; Kenneth Hin-Leong Ong
- Web page: https://patentgrep.com/patent/US11299616B2

## CPC

- C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
- C08K 3/2279: {of antimony}
- C08K 5/03: aromatic {, e.g. C6H5-CH2-Cl}
- C08K 5/14: Peroxides
- C08K 5/57: Organo-tin compounds
- C08L 23/06: Polyethylene
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- H01B 3/441: {from alkenes}
- C08F 255/02: on to polymers of olefins having two or three carbon atoms
- C08L 23/0892: with monomers containing atoms other than carbon, hydrogen or oxygen
- C08L 2203/202: use in electrical wires or wirecoating
- C08L 2207/062: HDPE
- C08L 2207/064: VLDPE
- C08L 2207/066: LDPE (radical process)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

Articles made from a moisture-crosslinkable, polymeric composition comprising in weight percent based on the weight of the composition: (A) 10 to 99.99 wt % of a nonpolar ethylenic polymer grafted with silane functionality (Si-g-npPE), the npPE having the following properties before grafting: (1) a vinyl content of 0.2 to 0.7 per 1,000 carbon atoms, (2) a melt index of 1.5 to 7.0 dg/min, (3) a density of 0.913 to 0.965 g/cc, and (4) a molecular weight distribution (Mw/Mn) of equal to or less than 8; (B) 0.01 to 20 wt % of a silanol condensation catalyst; and (C) 0 to 70 wt % of a flame retardant additive; exhibit one or more of desirable (a) silane grafting efficiency; (b) hot creep performance as a cable jacket/insulation after moisture crosslinking; (c) retained dielectric strength after glancing impact as a moisture crosslinked cable construction; and (d) crush resistance as a moisture crosslinked cable construction.

## Claims

### Claim 1

A moisture-crosslinkable, polymeric composition comprising in weight percent (wt %) based on the weight of the composition:
(A) 10 to 99.99 wt % of a nonpolar ethylenic polymer grafted with silane functionality (Si-g-npPE), the npPE having the following properties before grafting:
(1) a vinyl content of 0.2 to 0.7 per 1,000 carbon atoms,
(2) a melt index (MI or I2) of 1.5 to 7.0 decigrams per minute (dg/min),
(3) a density of 0.913 to 0.965 grams per cubic centimeter (g/cc), and
(4) a molecular weight distribution (MWD or Mw/Mn) of equal to or less than (≤)8;
(B) 0.01 to 20 wt % of a silanol condensation catalyst; and
(C) 0 to 70 wt % of a flame retardant additive.

### Claim 2 (depends on 1)

The composition of claim 1 in which nonpolar ethylenic polymer is made in an uncatalyzed process.

### Claim 3 (depends on 2)

The composition of claim 2 in which the nonpolar ethylenic polymer component of the Si-g-npPE is at least one of a high density polyethylene (HDPE); medium density polyethylene (MDPE); linear low density polyethylene (LLDPE); low density polyethylene (LDPE); very low density polyethylene (VLDPE); a homogeneously branched, linear ethylene/α-olefin copolymer; and a homogeneously branched, substantially linear ethylene/α-olefin polymer.

### Claim 4 (depends on 3)

The composition of claim 3 further comprising a silane-grafted ethylene plastomer/elastomer.

### Claim 5 (depends on 1)

The composition of claim 1 in which the silane-containing component of the Si-g-npPE is derived from a compound of the formula:
in which R′ is a hydrogen atom or methyl group; x and y are 0 or 1 with the proviso that when x is 1, y is 1; n is an integer from 1 to 12 inclusive, and each R″ independently is a hydrolyzable organic group having from 1 to 12 carbon atoms with the proviso that not more than one of the three R″ groups is an alkyl.

### Claim 6

A moisture-crosslinkable, polymeric composition comprising in weight percent based on the weight of the composition:
(A) 4.00 to 99.67 wt % of a nonpolar ethylenic polymer (npPE) having:
(1) a vinyl content of 0.2 to 0.7 per 1,000 carbon atoms,
(2) an I2 of 1.5 to 7.0 dg/min,
(3) a density of 0.913 to 0.965 g/cc, and
(4) MWD of equal to or less than (≤)8;
(B) 0.3 to 5 wt % of an alkoxysilane;
(C) 0.01 to 20 wt % of a silanol condensation catalyst;
(D) 0.02 to 1.0 wt % peroxide initiator; and
(E) 0 to 70 wt % of a flame retardant additive.

### Claim 7 (depends on 6)

The composition of claim 6 in which nonpolar ethylenic polymer is made in an uncatalyzed process.

### Claim 8 (depends on 6)

The composition of claim 6 in which the npPE is at least one of a high density polyethylene (HDPE); medium density polyethylene (MDPE); linear low density polyethylene (LLDPE); low density polyethylene (LDPE); very low density polyethylene (VLDPE); a homogeneously branched, linear ethylene/α-olefin copolymer; and a homogeneously branched, substantially linear ethylene/α-olefin polymer.

### Claim 9 (depends on 8)

The composition of claim 8 further comprising an ethylene plastomer/elastomer.

### Claim 10 (depends on 9)

The composition of claim 9 in which the silane-containing compound is of the formula:
in which R′ is a hydrogen atom or methyl group; x and y are 0 or 1 with the proviso that when x is 1, y is 1; n is an integer from 1 to 12 inclusive, and each R″ independently is a hydrolyzable organic group having from 1 to 12 carbon atoms with the proviso that not more than one of the three R″ groups is an alkyl.

### Claim 11 (depends on 10)

The composition of claim 10 in which the flame retardant additive is a halogenated flame retardant is at least one of perchloropentacyclodecane; a Diels-Alder adduct of hexachlorocyclopentadiene with maleic anhydride; hexabromobenzene; pentabromoethylbenzene 2,4,6-tribromophenol; tribromophenyl allyl ether; ethylene-1,2-bis(pentabromophenyl); octaobromodiphenyl; poly(pentabromobenzyl)acrylate; pentabromodiphenyl ether; octabromodiphenyl ether; decabromodiphenyl ether; tetrachlorobisphenol A; tetrabromobisphenol A; bis(dibromopropyl)ether of tetrabromobisphenol A; tetrachlorophthalic anhydride; tetrabromophthalic anhydride; hexachloroendomethylenetetrahydrophthalic acid; ethylene-bis(tetrabromophthatmide); and hexabromocyclododecane.

### Claim 12 (depends on 11)

The composition of claim 11 further comprising an inorganic antimony flame retardant.

### Claim 13

The composition of 10 in which the flame retardant additive is halogen-free.

### Claim 14 (depends on 6)

The composition of claim 6 in which the silanol condensation catalyst is at least one of an organic titanate and complexes or carboxylates of lead, cobalt, iron, nickel, zinc and tin.

### Claim 15 (depends on 6)

An article made from a composition of claim 6 in which the article has an ACBD value of ≥20% after a glancing impact as measured by the UL 2556 Section 7.14, Edition Number: 4, Edition Date: Dec. 15, 2015 glancing impact test.

### Claim 16 (depends on 15)

The article of claim 15 as a wire or cable coating.