High Flow Automotive Exterior Compounds with Excellent Surface Appearance
US-2019241726-A1 · Aug 8, 2019 · US
Ethylene/alpha-olefin interpolymer compositions with improved long term heat aging performance
US11970602B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11970602-B2 |
| Application number | US-201816969972-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 14, 2018 |
| Priority date | Feb 14, 2018 |
| Publication date | Apr 30, 2024 |
| Grant date | Apr 30, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A first composition comprising a first ethylene/α-olefin/diene interpolymer and a second ethylene/α-olefin interpolymer, and wherein the first composition comprises from 0.1 to 1.0 wt % diene, based on the weight of the first composition, and wherein the first composition comprises from 40 to 70 wt % ethylene, based on the weight of the first composition.
First claim
Opening claim text (preview).
What is claimed is: 1. A first composition comprising from 30 to 40 wt % of a first ethylene/α-olefin/diene interpolymer and from 60 to 70 wt % of a second ethylene/α-olefin interpolymer, and wherein the first composition comprises from 0.1 to 1.0 wt % diene, based on the weight of the first composition, and wherein the first composition comprises from 45 to 65 wt % ethylene, based on the weight of the first composition, and wherein the first ethylene/α-olefin/diene interpolymer has a weight average molecular weight (Mw) from 250,000 to 500,000 g/mole, and a diene content from 0.40 to 0.60 wt % and has a C2 (polymerized ethylene) content from 55 to 80 wt %, based on the weight of the first ethylene/α-olefin/diene interpolymer, and wherein the first composition has a weight average molecular weight (Mw) from 200,000 to 280,000 g/mole, a % crystallinity from 0.5% to 12% and has a “% Peak Area (21.3 to 22.0 ppm)” >5.0%, as determined by 13C NMR and the ratio of the C2 (polymerized ethylene) content of the first composition to the C2 (polymerized ethylene) content in the first ethylene/α-olefin/diene interpolymer is from 0.50 to 1.10; and wherein the ratio of the Mooney Viscosity (ML, 1+4, 125° C.) of the first composition to the Mooney Viscosity (ML, 1+4, 125° C.) of the first ethylene/α-olefin/diene interpolymer is from 0.75 to 1.05. 2. The first composition of claim 1 , wherein the first ethylene/α-olefin/diene interpolymer and the second ethylene/α-olefin interpolymer are each, independently, an EPDM. 3. The first composition of claim 1 , wherein the first composition has a molecular weight distribution (Mw/Mn) from 2.10 to 3.20. 4. The first composition of claim 1 , wherein the first interpolymer and the second interpolymer comprise ≥95 wt % of the total weight of the first composition. 5. A crosslinked composition comprising the first composition of claim 1 . 6. An article comprising at least one component formed from the first composition of claim 1 . 7. A composition comprising the first composition of claim 1 and an additive. 8. The composition of claim 7 , wherein the additive is MgO or ZnO. 9. The composition of claim 7 , wherein the first composition is present in an amount from 26 wt % to 42 wt %, based on the weight of the composition. 10. The composition of claim 7 , wherein the composition, after 1008 hours, at 150° C., in air, retains ≥50% of its original Tensile Strength, and retains ≥35% of its original Elongation at Break. 11. A crosslinked composition comprising the composition of claim 7 . 12. An article comprising at least one component formed from the composition of claim 7 . 13. The composition of claim 1 , wherein the composition, after 1008 hours, at 150° C., in air, retains ≥50% of its original Tensile Strength, and retains ≥35% of its original Elongation at Break.
Assignees
Inventors
Classifications
- C08L23/16Primary
Ethylene-propylene or ethylene-propylene-diene copolymers · CPC title
with non-conjugated dienes, e.g. EPT rubbers · CPC title
containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title
Crosslinking · CPC title
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Frequently asked questions
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- What does patent US11970602B2 cover?
- A first composition comprising a first ethylene/α-olefin/diene interpolymer and a second ethylene/α-olefin interpolymer, and wherein the first composition comprises from 0.1 to 1.0 wt % diene, based on the weight of the first composition, and wherein the first composition comprises from 40 to 70 wt % ethylene, based on the weight of the first composition.
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C08L23/16. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Apr 30 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).