# US 10,870,745 B2 · Thermoplastic polyolefin blends including ethylene rich polymers

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- Number: US 10,870,745 B2
- Document ID: US10870745B2
- Status: Granted
- Kind: B2
- Application number: 16/306,120
- Filed: 2017-05-25
- Published: 2019-05-09
- Granted: 2020-12-22
- Earliest claimed: 2016-05-31
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Olaf Henschke; Krischan Jeltsch
- Web page: https://patentgrep.com/patent/US10870745B2

## CPC

- C08L 23/12: Polypropene
- 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 2205/035: containing four or more polymers in a blend
- C08L 2207/02: Heterophasic composition
- C08L 2207/062: HDPE
- 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)

## Abstract

A composition comprising (A) from 40 wt % to 75 wt % of a propylene component including at least one propylene based polymer having a propylene content of at least 50.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 1.0 g/10 min to 100.0 g/10 min (ASTM D-1238 at 230° C., 2.16 kg); (B) from 1 wt % to 40 wt % of an olefin block copolymer; and (C) from 1 wt % to 20 wt % of an ethylene component including at least one ethylene based polymer having an ethylene content of at least 50.0 wt %, based on the total weight of the ethylene based polymer, and a melt index from 0.1 g/10 min to 50.0 g/10 min (ASTM D-1238 at 190° C., 2.16 kg).

## Claims

### Claim 1

A composition comprising:
(A) from 50 wt % to 70 wt %, based on the total weight of the composition, of a propylene component including at least one propylene based polymer having a propylene content of at least 50.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 1.0 g/10 min to 100.0 g/10 min according to ASTM D 1238 at 230°, 2.16 kg;
(B) from 20 wt % to 30 wt %, based on the total weight of the composition, of an olefin block copolymer; and
(C) from 1 wt % to 20 wt %, based on the total weight of the composition, of an ethylene component including at least one ethylene based polymer having an ethylene content of at least 50.0 wt %, based on the total weight of the ethylene based polymer, a melt index from 0.1 g/10 min to 50.0 g/10 min according to ASTM D 1238 at 230°, 2.16 kg, and a density from 0.920 g/cc to 0.965 g/cc.

### Claim 2 (depends on 1)

The composition of claim 1, further comprising (D) from 0.1 wt % to 20 wt % of an additive or filler.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the olefin block copolymer has a density from 0.850 g/cc to 0.890 g/cc according to ASTM D792 and a melt index from 0.1 g/10 min to 10.0 g/10 min according to ASTM D 1238 at 230°, 2.16 kg.

### Claim 4 (depends on 1)

The composition of claim 1, further comprising a melt flow rate of greater than 7.0 g/10 min according to ASTM D 1238 at 230°, 2.16 kg.

### Claim 5 (depends on 1)

The composition of claim 1, further comprising a notched impact of greater than or equal to 69.0 kJ/m2 at −40° C. according to ISO 179-1.

### Claim 6 (depends on 1)

The composition of claim 1, further comprising a flexural modulus from 300 MPa to 500 MPa according to ISO 178.

### Claim 7 (depends on 1)

An article made from the composition of claim 1.