# US 2014/0193628 A1 · Crosslinked, Melt-Shaped Articles and Compositions for Producing Same

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0193628 A1
- Document ID: US20140193628A1
- Status: Published application
- Kind: A1
- Application number: 14/192,319
- Filed: 2014-02-27
- Published: 2014-07-10
- Earliest claimed: 2009-09-16
- Assignees: Union Carbide Chemicals & Plastics Technology Corporation
- Applicants: Union Carbide Chemicals & Plastics Technology LLC
- Inventors: Mohamed Esseghir; Jeffrey M. Cogen; Saurav S. Sengupta
- Web page: https://patentgrep.com/patent/US20140193628A1

## CPC

- B29C 67/24: characterised by the choice of material
- B29C 45/0001: {characterised by the choice of material}
- B29C 45/16: Making multilayered or multicoloured articles {(B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816)}
- B29C 70/88: characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced
- C08F 220/10: Esters
- C08J 3/24: Crosslinking, e.g. vulcanising, of macromolecules (mechanical aspects B29C35/00; crosslinking agents C08K)
- C08J 3/244: {Stepwise homogeneous crosslinking of one polymer with one crosslinking system, e.g. partial curing}
- C08J 3/246: {Intercrosslinking of at least two polymers}
- C08K 5/57: Organo-tin compounds
- C08L 23/04: Homopolymers or copolymers of ethene
- C08L 23/08: Copolymers of ethene (C08L23/16 takes precedence)
- C08L 43/04: Homopolymers or copolymers of monomers containing silicon
- C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
- C08L 83/04: Polysiloxanes
- C08L 83/06: containing silicon bound to oxygen-containing groups (C08L83/12 takes precedence)
- H01B 3/22: hydrocarbons
- H01B 3/307: {Other macromolecular compounds}
- H01B 3/46: silicones
- H01B 7/00: Insulated conductors or cables characterised by their form
- H01B 19/00: Apparatus or processes specially adapted for manufacturing insulators or insulating bodies {(manufacture of porcelain for electric insulation C04B33/26)}
- B29K 2023/06: {PE, i.e. polyethylene}
- B29K 2023/0625: {LLDPE, i.e. linear low density polyethylene}
- B29K 2023/18: {Polymers of hydrocarbons having four or more carbon atoms, e.g. polymers of butylene, e.g. PB, i.e. polybutylene}
- B29K 2105/0014: {Catalysts}
- B29K 2105/0067: {Melt}
- B29K 2105/0085: {Copolymers}
- B29K 2105/0088: {Blends of polymers}
- B29K 2105/24: crosslinked or vulcanised
- B29K 2995/0083: Creep
- B29K 2995/0097: Thickness
- B29L 2009/00: Layered products
- B29L 2031/3462: {Cables}
- C08G 77/16: to hydroxy groups
- C08G 77/442: containing vinyl polymer sequences
- C08J 2383/04: Polysiloxanes
- C08J 2423/04: Homopolymers or copolymers of ethene
- C08L 2203/202: use in electrical wires or wirecoating
- C08L 2207/322: Liquid component is processing oil
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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})
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

Disclosed is a crosslinkable mixture comprising a polyolefin, an alkoxysilane, an organopolysiloxane, a free radical initiator and a liquid polymer modifier. The organopolysiloxane contains two or more hydroxyl end groups. When the crosslinkable mixture is melt-shaped, a unique crosslinked composition is formed. The liquid polymer modifier improves flexibility of the melt-shaped article without decreasing dielectric strength.

## Claims

### Claim at position 1

1-8. (canceled)

### Claim 9

A melt-shaped article comprising:
a crosslinked polyethylene composition;
an organopolysiloxane containing two or more hydroxyl end groups; and
a liquid polymer modifier.

### Claim 10 (depends on 9)

The melt-shaped article of claim 9 comprising polysiloxane linkages between the polymer chains of the polyethylene, the silane linkages having the structure (I)
wherein n=1 to 100,000.

### Claim 11 (depends on 9)

The melt-shaped article of claim 9 wherein the liquid polymer modifier is a phthalate-free hydrogenated C8 to C12 poly-alpha-olefin.

### Claim 12 (depends on 9)

The melt-shaped article of claim 9 having a thickness greater than 0.2 mm.

### Claim 13 (depends on 9)

The melt-shaped article of claim 9 having a thickness greater than 0.5 mm.

### Claim 14 (depends on 9)

The melt-shaped article of claim 9 having a thickness greater than 1.0 mm.

### Claim 15 (depends on 9)

The melt-shaped article of claim 9 having an alternating current breakdown strength (ACBD) greater 34 kV/mm as determined in accordance with ASTM D 149.

### Claim 16 (depends on 9)

The melt-shaped article of claim 9 comprising a first polyethylene crosslinked to a second polyethylene by way of a polysiloxane linkage.

### Claim 17 (depends on 9)

The melt-shaped article of claim 9 wherein the melt shaped article is selected from the group consisting of an insulation layer, a cable coating, and an electric power cable.

### Claim 18 (depends on 9)

The melt-shaped article of claim 9 wherein the article is selected from the group consisting of high voltage cable insulation, medium voltage cable insulation, wire, cable molded elastomeric connectors, cable molded accessories, and molded automotive heat resistant parts.

### Claim 19

A process for forming a melt-shaped article comprising:
(A) forming a crosslinkable mixture comprising:
1. an organopolysiloxane containing two or more functional end groups;
2. a polyolefin;
3. an alkoxysilane;
4. a aeroxide; and
5. a liquid polymer modifier;
(B) melt-shaping the mixture into an article at conditions sufficient to graft the alkoxysilane to the polyolefin and to partially crosslink the silane-grafted polyolefin; and
(C) cooling and continuing the crosslinking of the article.

### Claim 20 (depends on 19)

The process of claim 19 comprising melt-shaping the mixture into a storage article;
introducing the storage article to a second melt-shaping operation; and
melt-shaping the storage article into a finished article.

### Claim 21 (depends on 20)

The process of claim 20 comprising introducing the crosslinking catalyst during or after the second melt-shaping operation.

### Claim 22 (depends on 20)

The process of claim 20 comprising shaping the storage article into pellets.

### Claim 23 (depends on 19)

The process of claim 19 comprising adding the liquid polymer modifier with a crosslinking catalyst to the crosslinkable mixture.

### Claim 24 (depends on 19)

The process of claim 19 comprising extruding the crosslinkable composition over a cable as the cable is drawn through an extrusion die.

### Claim 25 (depends on 19)

The process of claim 19 comprising forming a melt shaped article selected from the group consisting of fibers, ribbons, sheets, tapes, tubes, pipes, weather-stripping, seals, gaskets, hoses, foams, footwear and bellows.