Degradable polymeric compositions and articles comprising same
US-2024425683-A1 · Dec 26, 2024 · US
Porous film, battery separator, and battery
US9259900B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9259900-B2 |
| Application number | US-201013388874-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2010 |
| Priority date | Aug 6, 2009 |
| Publication date | Feb 16, 2016 |
| Grant date | Feb 16, 2016 |
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Abstract
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A porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, in which the number of branches per 1000 carbon atoms that constitute the main chain of the polyolefin wax is 15 or less; a porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, and which does not substantially contain a component that melts at a temperature of 60° C. or lower; a laminated porous film which comprises one of the porous films and a heat-resistance porous layer laminated on at least one surface of the porous film; and a separator for batteries, which comprises the porous film or the laminated porous film.
First claim
Opening claim text (preview).
The invention claimed is: 1. A battery separator, comprising a porous film obtained using a resin composition containing an ultrahigh-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3,000 or less, wherein the number of branches per 1,000 carbon atoms constituting the main chain of the polyolefin wax is 15 or less. 2. A battery separator comprising a porous film obtained using a resin composition containing an ultrahigh-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3,000 or less, wherein the film is substantially free from a component which melts at 60° C. or lower. 3. The battery separator according to claim 1 , wherein the resin composition contains the polyolefin wax in an amount of 5 to 50 wt %, provided that the weight of the resin composition is 100%. 4. A battery separator comprising a laminated porous film, wherein a porous heat-resistant layer is laminated on at least one surface of a porous film obtained using a resin composition containing an ultrahigh-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3,000 or less, wherein the number of branches per 1,000 carbon atoms constituting the main chain of the polyolefin wax is 15 or less. 5. A battery comprising the battery separator according to claim 1 . 6. A battery comprising the battery separator according to claim 4 . 7. The battery separator according to claim 2 , wherein the resin composition contains the polyolefin wax in an amount of 5 to 50 wt %, provided that the weight of the resin composition is 100%. 8. A battery separator comprising a laminated porous film, wherein a porous heat-resistant layer is laminated on at least one surface of a porous film obtained using a resin composition containing an ultrahigh-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3,000 or less, wherein the film is substantially free from a component which melts at 60° C. or lower. 9. A battery comprising the battery separator according to claim 2 . 10. A battery comprising the battery separator according to claim 8 .
Assignees
Inventors
Classifications
- C08J5/18Primary
Manufacture of films or sheets · CPC title
comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title
Polyethylene · CPC title
Medical equipment, e.g. bandage, prostheses or catheter · CPC title
Elimination of a polymeric phase · CPC title
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- What does patent US9259900B2 cover?
- A porous film which is produced using a resin composition containing an ultra-high-molecular-weight polyolefin and a polyolefin wax having a weight average molecular weight of 3000 or less, in which the number of branches per 1000 carbon atoms that constitute the main chain of the polyolefin wax is 15 or less; a porous film which is produced using a resin composition containing an ultra-high-mo…
- Who is the assignee on this patent?
- Hasegawa Hirohiko, Shinohara Yasuo, Yashiki Daizaburo, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08J5/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 16 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).