# US 10,370,524 B2 · Ethylene/alpha-olefin/nonconjugated polyene based compositions for thermoplastic vulcanizates

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- Number: US 10,370,524 B2
- Document ID: US10370524B2
- Status: Granted
- Kind: B2
- Application number: 14/411,453
- Filed: 2013-03-15
- Published: 2015-07-30
- Granted: 2019-08-06
- Earliest claimed: 2012-06-29
- Assignees: Dow Global Technologies LLC
- Applicants: Dow Global Technologies LLC
- Inventors: Xiaosong Wu; Colin Li Pi Shan
- Web page: https://patentgrep.com/patent/US10370524B2

## CPC

- C08L 9/00: Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L 23/12: Polypropene
- C08L 23/16: Ethylene-propylene or ethylene-propylene-diene copolymers
- C08L 91/00: Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L 2201/02: Flame or fire retardant/resistant
- C08L 2205/02: containing two or more polymers of the same C08L -group
- 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 2207/04: Thermoplastic elastomer
- C08L 2312/04: with phenolic resin
- C08L 2314/06: Metallocene or single site catalysts
- Y10T 428/139: Open-ended, self-supporting conduit, cylinder, or tube-type article
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention provides a composition comprising at least the following components: A) an ethylene/α-olefin/nonconjugated polyene interpolymer that has the following properties: i) a rheology ratio (V0.1/V100 at 190° C.) greater than, or equal to, 35; ii) a weight average molecular weight (Mw) greater than, or equal to, 200,000 g/mol; and iii) a CCDB (Chemical Composition Distribution Breadth) less than 7; B) a thermoplastic polymer; C) a vulcanization agent; and wherein the interpolymer comprises incorporated oil. The invention also provides a composition comprising the following: A) a first composition comprising: a) a first ethylene/α-olefin/nonconjugated polyene interpolymer; b) a second ethylene/α-olefin/nonconjugated polyene interpolymer; and wherein the first composition has the following properties: i) an MWD less than, or equal to, 3.5, ii) a Mooney Viscosity (ML (1+4, 125° C.)) greater than, or equal to, 60, iii) a CCDB from 7 to 15; B) a thermoplastic polymer; C) a vulcanization agent; and wherein the first interpolymer and the second interpolymer comprise incorporated oil.

## Claims

### Claim 1

A composition comprising at least the following components:
A) an EPDM that has the following properties:
i) a rheology ratio (V0.1/V100 at 190° C.) greater than, or equal to, 35;
ii) a weight average molecular weight (Mw) greater than, or equal to, 200,000 g/mol; and
iii) a CCDB (Chemical Composition Distribution Breadth) less than 7;
B) a thermoplastic polymer;
C) a vulcanization agent; and
wherein the interpolymer comprises incorporated oil; and wherein the interpolymer has a peak area, from 21.3 ppm to 21.8 ppm, that is greater than 3 percent of the total integral area from 19.5 ppm to 22.0 ppm, as determined by 13C NMR.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the EPDM has a Mooney Viscosity greater than, or equal to, 60 (ML 1+4, 125° C.).

### Claim 3 (depends on 1)

The composition of claim 1, wherein the EPDM comprises from 55 to 72 weight percent ethylene, based on the weight of the interpolymer.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the EPDM has a MWD less than, or equal to, 3.5.

### Claim 5

A composition comprising the following:
A) a first composition comprising:
a) a first EPDM;
b) a second EPDM; and wherein the first composition has the following properties:
i) an MWD less than, or equal to, 3.5,
ii) a Mooney Viscosity (ML (1+4, 125° C.)) greater than, or equal to, 60,
iii) a CCDB from 7 to 15;
B) a thermoplastic polymer;
C) a vulcanization agent; and
wherein the first interpolymer and the second interpolymer comprise incorporated oil; and
wherein the first composition has a rheology ratio (V0.1/V100 at 190° C.) greater than, or equal to, 35; and wherein the first composition has a peak area, from 21.3 ppm to 21.8 ppm, that is greater than 3 percent of the total integral area from 19.5 ppm to 22.0 ppm, as determined by 13C NMR.

### Claim 6 (depends on 5)

The composition of claim 5, wherein the absolute difference in ethylene content between the first interpolymer and the second interpolymer is from 5 to 10 weight percent.

### Claim 7 (depends on 5)

The composition of claim 5, wherein the first composition has a weight average molecular weight (Mw) greater than, or equal to, 200,000 g/mole.

### Claim 8 (depends on 1)

The composition of claim 1, wherein the thermoplastic polymer of Component B is a propylene-based polymer.

### Claim 9 (depends on 1)

The composition of claim 1, wherein the vulcanization agent of Component C is selected from the group consisting of phenolic resins.

### Claim 10 (depends on 1)

A crosslinked composition formed from the composition of claim 1.

### Claim 11 (depends on 1)

An article comprising at least one component formed from the composition of claim 1.

### Claim 12 (depends on 11)

The article of claim 11, wherein the article is selected from the group consisting of profiles, injection molded parts, gaskets, shoe components and tubes.

### Claim 13 (depends on 1)

The composition of claim 1, wherein the EPDM comprises from 55 to 68 weight percent ethylene, based on the weight of the interpolymer.

### Claim 14 (depends on 1)

The composition of claim 1, wherein the EPDM has a peak area, from 21.3 ppm to 21.8 ppm, greater than, or equal to, 8 percent of the total integral area from 19.5 ppm to 22.0 ppm, as determined by 13C NMR.

### Claim 15 (depends on 1)

The composition of claim 1, wherein the EPDM is present in an amount greater than, or equal to, 40 weight percent, based on the weight of the composition, and the thermoplastic polymer is present in an amount less than, or equal to 50 weight percent, based on the weight of the composition.

### Claim 16 (depends on 1)

The composition of claim 1, wherein the EPDM has a peak area, from 21.3 ppm to 21.8 ppm, greater than, or equal to, 5 percent of the total integral area from 19.5 ppm to 22.0 ppm, as determined by 13C NMR.

### Claim 17 (depends on 5)

The composition of claim 5, wherein the first composition has a peak area, from 21.3 ppm to 21.8 ppm, greater than, or equal to, 5 percent of the total integral area from 19.5 ppm to 22.0 ppm, as determined by 13C NMR.

### Claim 18 (depends on 5)

The composition of claim 5, wherein the first composition has a peak area, from 21.3 ppm to 21.8 ppm, greater than, or equal to, 7 percent of the total integral area from 19.5 ppm to 22.0 ppm, as determined by 13C NMR.