Polyolefin based elastic compositions, methods of manufacturing thereof and articles comprising the same
US-11230641-B2 · Jan 25, 2022 · US
Synthetic leather
US12502872B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12502872-B2 |
| Application number | US-202118283945-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 9, 2021 |
| Priority date | Apr 9, 2021 |
| Publication date | Dec 23, 2025 |
| Grant date | Dec 23, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present disclosure provides an article. In an embodiment, the article includes (A) a top layer composed of a composition composed of (i) from 51 wt % to 90 wt % of a propylene-based polymer, and (ii) from 10 wt % to 49 wt % of an ethylene/octene multi-block copolymer having hard segments and soft segments. The ethylene/octene multi-block copolymer has a soft segment melt temperature (SS-Tm) less than 2° C. The article also includes (B) a bottom layer composed of a textile.
First claim
Opening claim text (preview).
The invention claimed is: 1 . An article comprising: A. a top layer composed of a composition comprising (i) from 51 wt % to 90 wt % of a propylene-based polymer, and (ii) from 10 wt % to 49 wt % of an ethylene/octene multi-block copolymer having hard segments and soft segments, the ethylene/octene multi-block copolymer having a soft segment melt temperature (SS-Tm) less than 2° C., wherein the ethylene/octene multi-block copolymer comprises from 21 mol % to 35 mol % of octene in the soft segment; and B. a bottom layer comprising a textile. 2 . The article of claim 1 wherein the composition of the top layer has (i) a bally flex resistance value greater than 60,000; and (ii) a Shore A hardness less than 80. 3 . The article of claim 1 wherein the propylene-based polymer is a propylene/ethylene copolymer having a density from 0.85 g/cc to 0.87 g/cc; and a melt flow rate from 5 g/10 min to 30 g/10 min. 4 . The article of claim 1 wherein the composition of the top layer comprises from 10 wt % to 49 wt % of a first ethylene/octene multi-block copolymer having hard segments and soft segments, the first ethylene/octene multi-block copolymer having a soft segment melt temperature (SS-Tm) less than 2° C., wherein the first ethylene/octene multi-block copolymer comprises from 21 mol % to 35 mol % of octene in the soft segment; and a second ethylene/octene multi-block copolymer different than the first ethylene/octene multi-block copolymer, the second ethylene/octene multi-block copolymer having hard segments and soft segments, the second ethylene/octene multi-block copolymer having a soft segment melt temperature (SS-Tm) less than 2° C., wherein the second ethylene/octene multi-block copolymer comprises from 21 mol % to 35 mol % of octene in the soft segment. 5 . The article of claim 1 comprising C. a middle foam layer composed of a composition comprising (i) from 51 wt % to 90 wt % of a propylene-based polymer, and (ii) from 10 wt % to 49 wt % of an ethylene/octene multi-block copolymer having hard segments and soft segments, the ethylene/octene multi-block copolymer having a soft segment melt temperature (SS-Tm) less than 2° C., wherein the ethylene/octene multi-block copolymer in the middle foam layer comprises from 21 mol % to 35 mol % of octene in the soft segment. 6 . The article of claim 5 wherein the propylene-based polymer in the middle foam layer is a propylene/ethylene copolymer having a density from 0.85 g/cc to 0.87 g/cc; and a melt flow rate from 5 g/10 min to 30 g/10 min. 7 . The article of claim 5 wherein the composition of the middle foam layer (C) comprises (ii) from 10 wt % to 49 wt % of a first ethylene/octene multi-block copolymer having hard segments and soft segments, the first ethylene/octene multi-block copolymer having a soft segment melt temperature (SS-Tm) less than 2° C., wherein the first ethylene/octene multi-block copolymer in the middle foam layer comprises from 21 mol % to 35 mol % of octene in the soft segment; and a second ethylene/octene multi-block copolymer different than the first ethylene/octene multi-block copolymer, the second ethylene/octene multi-block copolymer having hard segments and soft segments, the second ethylene/octene multi-block copolymer having a soft segment melt temperature (SS-Tm) less than 2° C., wherein the second ethylene/octene multi-block copolymer in the middle foam layer comprises from 21 mol % to 35 mol % of octene in the soft segment.
Assignees
Inventors
Classifications
Density · CPC title
Flexural strength; Flexion stiffness · CPC title
Hardness · CPC title
having particular thermal properties · CPC title
Resin or rubber layer containing a blend of at least two different polymers · CPC title
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Frequently asked questions
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- What does patent US12502872B2 cover?
- The present disclosure provides an article. In an embodiment, the article includes (A) a top layer composed of a composition composed of (i) from 51 wt % to 90 wt % of a propylene-based polymer, and (ii) from 10 wt % to 49 wt % of an ethylene/octene multi-block copolymer having hard segments and soft segments. The ethylene/octene multi-block copolymer has a soft segment melt temperature (SS-Tm)…
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification B32B27/065. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 23 2025 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).