# US 10,767,020 B2 · Catalyst masterbatch

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- Number: US 10,767,020 B2
- Document ID: US10767020B2
- Status: Granted
- Kind: B2
- Application number: 14/388,740
- Filed: 2013-04-24
- Published: 2015-03-05
- Granted: 2020-09-08
- Earliest claimed: 2012-04-27
- Assignees: Borealis AG
- Applicants: Borealis AG
- Inventors: Kristian Dahlén; Perry Nylander
- Web page: https://patentgrep.com/patent/US10767020B2

## CPC

- C08J 3/24: Crosslinking, e.g. vulcanising, of macromolecules (mechanical aspects B29C35/00; crosslinking agents C08K)
- C08J 3/226: {using a polymer as a carrier}
- C08K 5/09: Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08L 23/0869: with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters
- C08L 43/04: Homopolymers or copolymers of monomers containing silicon
- H01B 3/44: vinyl resins; acrylic resins (silicones H01B3/46)
- C08J 2323/08: Copolymers of ethene (C08J2323/16 takes precedence)
- C08J 2343/04: Homopolymers or copolymers of monomers containing silicon
- C08J 2451/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
- C08K 5/42: Sulfonic acids; Derivatives thereof
- C08L 51/06: grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
- C08L 2203/202: use in electrical wires or wirecoating
- C08L 2310/00: Masterbatches
- C08L 2312/08: by silane
- 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})

## Abstract

The present invention relates to a catalyst masterbatch for cross-linking a polyolefin having cross-linkable silicon-containing groups. The catalyst masterbatch includes both of a Brønsted acid and/or Brønsted acid anhydride (A); and a polyolefin (B) containing Brønsted acid and/or Brønsted acid anhydride groups. The invention also encompasses compositions of a polyolefin having cross-linkable silicon-containing groups that include the catalyst masterbatch, use of the catalyst masterbatch in a cross-linking reaction of silicon-containing polyolefins, and a cable layer that includes a polymer made using the catalyst masterbatch.

## Claims

### Claim 1

A catalyst masterbatch for cross-linking a polyolefin comprising cross-linkable silicon-containing groups comprising
a Brønsted acid and/or Brønsted acid anhydride (A); and
a polyolefin (B) containing Brønsted acid anhydride groups,
wherein the Brønsted acid and/or Brønsted acid anhydride (A) are selected from carboxylic acids, carboxylic acid anhydrides, sulphonic acid and/or sulphonic acid anhydrides;
wherein (A) is present in an amount of from 0.5 to 20 wt %, and
wherein (B) is present in an amount of from 15 to 99 wt % based on the total weight of the catalyst masterbatch.

### Claim 2 (depends on 1)

The catalyst masterbatch according to claim 1, wherein component (B) is an ethylene homo- or copolymer or propylene homo- or copolymer.

### Claim 3 (depends on 1)

The catalyst masterbatch according to claim 1, wherein component (B) contains Brønsted acid anhydride groups in a total amount of 0.01 to 20 wt. % based on the total amount of component (B).

### Claim 4 (depends on 1)

The catalyst masterbatch according to claim 1, wherein the catalyst masterbatch contains Brønsted acid groups and/or Brønsted acid anhydride groups in a total amount of 0.2 to 25 wt. % based on the total amount of the catalyst masterbatch.

### Claim 5 (depends on 1)

The catalyst masterbatch according to claim 1, wherein the sulphonic acid comprises the structural element (II)
aromatic organic sulphonic acid comprising the structural element (II)
Ar(SO3H)x (II)
with Ar being an aryl group which may be substituted or non-substituted, and x being at least 1.

### Claim 6 (depends on 5)

The catalyst masterbatch according to claim 5, wherein the sulphonic acid is selected from the following compounds:
(i) an alkylated naphthalene monosulfonic acid substituted with 1 to 4 alkyl groups wherein each alkyl group is a linear or branched alkyl with 5 to 40 carbon atoms with each alkyl group being the same or different and wherein the total number of carbon atoms in the alkyl groups is in the range of 20 to 80 carbon atoms;
(ii) an arylalkyl sulfonic acid wherein the aryl group is phenyl or naphthyl and is substituted with 1 to 4 alkyl groups wherein each alkyl group is a linear or branched alkyl with 5 to 40 carbon atoms with each alkyl group being the same or different and wherein the total number of carbon atoms in the alkyl groups is in the range of 12 to 80;
(iii) an alkylated aryl disulfonic acid selected from the group consisting of the structure (III):
or the structure (IV):
wherein each of R1 and R2 are the same or different and is a linear or branched alkyl group with 6 to 16 carbon atoms, y is 0 to 3, z is 0 to 3 with the proviso that y+z is 1 to 4, n is 0 to 3, X is a divalent moiety selected from the group consisting of
—C(R3)(R4)—, wherein each of R3 and R4 is H or independently a linear or branched alkyl group of 1 to 4 carbon atoms and n is 1;
—C(═O)—, wherein n is 1;
—S—, wherein n is 1 to 3 and
—S(O)2—, wherein n is 1.

### Claim 7 (depends on 6)

The catalyst masterbatch according to claim 6, wherein the sulphonic acid is selected from compounds of group (ii).

### Claim 8 (depends on 7)

The catalyst masterbatch according to claim 7, wherein in the sulphonic acid of group (ii) the aryl group is phenyl and is substituted with 1 to 2 alkyl groups wherein each alkyl group is a linear or branched alkyl with 8 to 25 carbon atoms with each alkyl group being the same or different and wherein the total number of carbon atoms in the alkyl groups is in the range of 12 to 40.

### Claim 9 (depends on 5)

The catalyst masterbatch according to claim 5, wherein the sulphonic acid is selected from the following compounds:
(ii) an arylalkyl sulphonic acid wherein the aryl group is phenyl or naphthyl and is substituted with 1 to 4 alkyl groups wherein each alkyl group is a linear or branched alkyl with 5 to 40 carbon atoms with each alkyl group being the same or different and wherein the total number of carbon atoms in the alkyl groups is in the range of 12 to 80; or
(iv) an alkylated aryl disulphonic acid selected from the group consisting of the structure (III):
or the structure (IV):
wherein each of R1 and R2 are the same or different and is a linear or branched alkyl group with 6 to 16 carbon atoms, y is 0 to 3, z is 0 to 3 with the proviso that y+z is 1 to 4, n is 0 to 3,
X is a divalent moiety selected from the group consisting of —C(R3)(R4)—,
wherein each of R3 and R4 is H or independently a linear or branched alkyl group of 1 to 4 carbon atoms and n is 1;
—C(═O)—, wherein n is 1;
—S—, wherein n is 1 to 3 and
—S(O)2—, wherein n is 1.

### Claim 10 (depends on 1)

A method for cross-linking a polyolefin with cross-linkable silicon-containing groups (C) comprising adding the masterbatch according to claim 1, to the polyolefin (C) to form a polyolefin composition; and treating the polyolefin composition under cross-linking conditions.

### Claim 11 (depends on 1)

A cable layer comprising the catalyst masterbatch according to claim 1.