# US 10,308,829 B2 · Moisture-and peroxide-crosslinkable polymeric compositions

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- Number: US 10,308,829 B2
- Document ID: US10308829B2
- Status: Granted
- Kind: B2
- Application number: 15/028,967
- Filed: 2014-11-10
- Published: 2016-09-01
- Granted: 2019-06-04
- Earliest claimed: 2013-11-25
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Bharat I. Chaudhary
- Web page: https://patentgrep.com/patent/US10308829B2

## CPC

- C09D 123/26: modified by chemical after-treatment
- C08F 110/02: Ethene
- C08K 5/14: Peroxides
- H01B 3/441: {from alkenes}
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- 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})

## Abstract

Crosslinkable polymeric compositions comprising a polyolefin having hydrolyzable silane groups, an organic peroxide, and optionally a silanol condensation catalyst. Such crosslinkable polymeric compositions are crosslinkable via a combination of peroxide crosslinking and moisture curing. Such crosslinkable polymeric compositions can be employed in the production of various articles of manufacture, such as coated conductors.

## Claims

### Claim 1

A crosslinkable polymeric composition, comprising:
(a) a polyolefin having hydrolyzable silane groups;
(b) an organic peroxide; and
(c) a silanol condensation catalyst, which is a sulfonic acid or a blocked sulfonic acid;
wherein said polyolefin having hydrolyzable silane groups is present in an amount in the range of from 96 to 99.49 weight percent based on the entire weight of components (a) through (c); wherein said organic peroxide is present in an amount in the range of from 0.5 to 3 weight percent based on the entire weight of components (a) through (c); wherein said silanol condensation catalyst is present in an amount in the range of from 0.01 to 1 weight percent based on the entire weight of components (a) through (c); wherein said crosslinkable polymeric composition further comprises d) up to 5 parts per hundred of one or more additives selected from the group consisting of cure boosters, scorch retardants, tree retardants, heat and light stabilizers, fillers, pigments, and antioxidants, based on 100 weight parts of said polyolefin.

### Claim 2 (depends on 1)

The crosslinkable polymeric composition of claim 1, wherein said polyolefin having hydrolyzable silane groups is selected from the group consisting of (i) an interpolymer of ethylene and a hydrolyzable silane, (ii) an interpolymer of ethylene, one or more C3 or higher α-olefins and/or unsaturated esters, and a hydrolyzable silane, (iii) a homopolymer of ethylene having a hydrolyzable silane grafted to its backbone, and (iv) an interpolymer of ethylene and one or more C3 or higher α-olefins and/or unsaturated esters, such interpolymer having a hydrolyzable silane grafted to its backbone.

### Claim 3 (depends on 1)

A crosslinked polymeric composition prepared from the crosslinkable polymeric composition of claim 1, wherein said crosslinked polymeric composition has a scorch time at 140° C. of at least 10 minutes; wherein said crosslinked polymeric composition has a maximum torque (MH)—minimum torque (ML) at 182° C. of at least 0.2 lb-in; wherein said crosslinked polymeric composition has a gel content of at least 40 percent.

### Claim 4 (depends on 3)

A coated conductor, comprising:
(a) a conductor; and
(b) at least a portion of said crosslinked polymeric composition of claim 3 surrounding at least a portion of said conductor.

### Claim 5

A process for producing a crosslinked polymeric composition, said process comprising:
(1) forming a crosslinkable polymeric composition comprising (a) a polyolefin having hydrolyzable silane groups, (b) an organic peroxide, and (c) a silanol condensation catalyst, which is a sulfonic acid or a blocked sulfonic acid, wherein said polyolefin having hydrolyzable silane groups is present in an amount in the range of from 96 to 99.49 weight percent based on the entire weight of components (a) through (c); wherein said organic peroxide is present in an amount in the range of from 0.5 to 3 weight percent based on the entire weight of components (a) through (c); wherein said silanol condensation catalyst is present in an amount in the range of from 0.01 to 1 weight percent based on the entire weight of components (a) through (c); wherein said crosslinkable polymeric composition further comprises d) up to 5 parts per hundred of one or more additives selected from the group consisting of cure boosters, scorch retardants, tree retardants, heat and light stabilizers, fillers, pigments, and antioxidants, based on 100 weight parts of said polyolefin;
(2) subjecting said crosslinkable polymeric composition to conditions sufficient to induce crosslinking in at least a portion of said crosslinkable polymeric composition via said organic peroxide; and
(3) subjecting said crosslinkable polymeric composition to conditions sufficient to induce crosslinking in at least a portion of said crosslinkable polymeric composition via said hydrolyzable silane groups and said silanol condensation catalyst, thereby producing said crosslinked polymeric composition.

### Claim 6 (depends on 5)

The process of claim 5, wherein said conditions sufficient to induce crosslinking via said organic peroxide include subjecting said crosslinkable polymeric composition to an elevated temperature of at least 90° C.

### Claim 7 (depends on 5)

The process of claim 5, wherein said conditions sufficient to induce crosslinking via said hydrolyzable silane groups and said silanol condensation catalyst include contacting at least a portion of said crosslinkable polymeric composition with water, wherein said water is either generated in situ or provided from an external environment.

### Claim 8 (depends on 5)

The process of claim 5, wherein said crosslinked polymeric composition has a scorch time at 140° C. of greater than 10 minutes; wherein said crosslinked polymeric composition has a maximum torque (MH) minimum torque (ML) at 182° C. of greater than 0.2 lb-in; wherein said crosslinked polymeric composition has a gel content of greater than 40 percent.