# US 10,246,579 B2 · Thermoplastic composition comprising polyethylene, manufacture and use thereof

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- Number: US 10,246,579 B2
- Document ID: US10246579B2
- Status: Granted
- Kind: B2
- Application number: 15/125,301
- Filed: 2015-03-04
- Published: 2017-03-23
- Granted: 2019-04-02
- Earliest claimed: 2014-03-12
- Assignees: Autoneum Management AG
- Applicants: Autoneum Management AG
- Inventors: Pierre Daniere; Santiago Clara; Wilfried Junghans
- Web page: https://patentgrep.com/patent/US10246579B2

## CPC

- C08L 23/06: Polyethylene
- B32B 5/022: {Non-woven fabric}
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- C08K 3/04: Carbon
- C08K 3/22: of metals
- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- C08L 91/00: Compositions of oils, fats or waxes; Compositions of derivatives thereof
- B32B 2250/02: 2 layers
- B32B 2307/102: Insulating
- B32B 2307/56: Damping, energy absorption
- B32B 2605/08: Cars
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L 2205/03: containing three or more polymers in a blend
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

Thermoplastic composition, comprising at least components (i) to (iii): (i) from 10 to 50% by weight of a combination of at least one first ethylene polymer (A) and at least one second ethylene polymer (B), wherein (A) is selected such as to exhibit (a) a density of from 0.87 g/cm3-0.90 g/cm3 as determined according to ASTM D792; (β) a melt flow index of from 0.3 g/10 min-5 g/10 min as determined according to ASTM D1238 (190° C./2.16 kg); (γ) a flexural modulus of from 5 to 60 MPa measured according to ASTM D790; and wherein (B) is selected such as to exhibit (a) a density of from 0.90 g/cm3-0.92 g/cm3 as determined according to ASTM D792; (β) a melt flow index of from 0.3 g/10 min-10 g/10 min as determined according to ASTM D1238 (190° C./2.16 kg); (γ) a flexural modulus which is higher than that of (A); (ii) from 35-90% by weight of inorganic particles as filler; (iii) from 0.05-20% by weight of a liquid (at 23° C.) as a plasticizer for the at least one first ethylene polymer (A) and/or the at least one second ethylene polymer (B); the % by weight of components (i) to (iii) being based on the total weight of the composition.

## Claims

### Claim 1

A thermoplastic composition, comprising:
from 10 to 50% by weight of a combination of at least one first ethylene polymer, at least one second ethylene polymer, and at least one third ethylene polymer,
wherein the first ethylene polymer has the following properties:
a density in the range of 0.87 g/cm3 to 0.90 g/cm3;
a melt flow index in the range of 0.3 g/10 min to 5 g/10 min; and
a flexural modulus in the range of 5 MPa to 60 MPa;
wherein the second ethylene polymer has the following properties:
a density in the range of 0.90 g/cm3 to 0.92 g/cm3;
a melt flow index in the range of 0.3 g/10 min to 10 g/10 min; and
a flexural modulus which is higher than that of the first ethylene polymer; and
wherein the third ethylene polymer has the following properties:
a density in the range of 0.92 g/cm3 to 0.97 g/cm3; and
a melt flow index in the range of 15 g/10 min to 100 g/10 min;
from 35 to about 90% by weight of inorganic particles as filler; and
from 0.05 to 20% by weight of a liquid (at 23° C.) which acts as a plasticizer for at least one of the at least one first ethylene polymer, the at least one second ethylene polymer, and the at least one third ethylene polymer; and
wherein each density is determined according to ASTM D792, each melt flow index is determined according to ASTM D1238, at 190° C. and 2.16 kg, and each flexural modulus is determined according to ASTM D790.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the at least one third polyethylene polymer has one of the following property sets:
a density in the range of 0.92 g/cm3 to 0.95 g/cm3; and a melt flow index in the range of 20 g/10 min to 90 g/10 min; or
a density in the range of 0.925 g/cm3 to 0.935 g/cm3; and a melt flow index in the range of 30 g/10 min to 80 g/10 min.

### Claim 3 (depends on 2)

The composition of claim 2, wherein one of the following conditions applies:
the first ethylene polymer has the following property set:
a density in the range of 0.87 g/cm3 to 0.89 g/cm3,
a melt flow index in the range of 0.5 g/10 min to 3 g/10 min, and
a flexural modulus in the range of 10 MPa to 50 MPa; and
the second ethylene polymer has the following property set:
a density in the range of 0.90 g/cm3 to 0.92 g/cm3, and
a melt flow index in the range of 0.5 g/10 min to 7 g/10 mi; or
the first ethylene polymer has the following property set:
a density in the range of 0.87 g/cm3 to 0.89 g/cm3,
a melt flow index in the range of 0.5 g/10 min to 3 g/10 min, and
a flexural modulus in the range of 10 MPa to 40 MPa; and
the second ethylene polymer has the following property set:
a density in the range of from 0.90 g/cm3 to 0.92 g/cm3, and a melt flow index in the range of from 0.5 g/10 min to 1.5 g/10 min.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the first ethylene polymer is a copolymer of ethylene with 1-butene or 1-octene;
the second ethylene polymer is a linear low density polyethylene (LLDPE); and the third ethylene polymer is a low density polyethylene (LDPE).

### Claim 5 (depends on 1)

The composition of claim 1, wherein the weight of the first ethylene polymer is in the range of from 5 to 30%, the weight of the second ethylene polymer is in the range of from 60 to 90%, and the weight of the third ethylene polymer is in the range of from 1 to 20%, based on the total amount of the respective first, second and third ethylene polymers.

### Claim 6 (depends on 1)

The composition of claim 1, wherein the inorganic particles as filler are selected from the group consisting of: calcium carbonate, calcium sulphate, barium carbonate, barium sulphate, magnesium carbonate, magnesium sulphate, alumina, clay, silica, and mixtures thereof.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the liquid is selected from the group consisting of: paraffinic oil, aromatic oil, naphthenic oils, epoxidized oils, polyesters of a polybasic acid and a polyol, polyethers, polyether esters, monocarboxylic acids having from 7 to 12 carbon atoms, and mixtures thereof.

### Claim 8 (depends on 1)

The composition of claim 1, further comprising:
a component amounting to from 0.01 to 25% by weight, based on the total weight of the composition, selected from the group consisting of: a slip agent, an ignition resistant additive, a stabilizer, a colorant, a pigment, an antioxidant, an antistat, a flow enhancer, a mold release agent, a nucleating agent, and mixtures thereof.

### Claim 9 (depends on 1)

The composition of claim 1, wherein one of the following conditions applies:
the first ethylene polymer has the following property set:
a density in the range of 0.87 g/cm3 to 0.89 g/cm3, a melt flow index in the range of 0.5 g/10 min to 3 g/10 min, and a flexural modulus in the range of 10 MPa to 50 MPa;
and the second ethylene polymer has the following property set:
a density in the range of 0.90 g/cm3 to 0.92 g/cm3, and a melt flow index in the range of 0.5 g/10 min to 7 g/10 min; or
the first ethylene polymer has the following property set: a density in the range of 0.87 g/cm3 to 0.89 g/cm3, a melt flow index in the range of 0.5 g/10 min to 3 g/10 min and a flexural modulus in the range of 10 MPa to 40 MPa; and
the second ethylene polymer has the following property set: a density in the range of from 0.90 g/cm3 to 0.92 g/cm3, and a melt flow index in the range of from 0.5 g/10 min to 1.5 g/10 min.

### Claim 10 (depends on 1)

A layered composite material comprising a barrier layer, wherein the barrier layer comprises the thermoplastic composition of claim 1.

### Claim 11 (depends on 10)

The layered composite material of claim 10 further comprising a spring element layer, wherein the spring element layer comprises a material selected from the group consisting of: foam, fleece, felt, fibers, shoddy, and mixtures thereof.