Water soluble film, packets employing the film, and methods of making and using same
US-2016280869-A1 · Sep 29, 2016 · US
Composition, porous polymer membrane and hydrophilic agent
US2016145369A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016145369-A1 |
| Application number | US-201414898386-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 25, 2014 |
| Priority date | Jun 26, 2013 |
| Publication date | May 26, 2016 |
| Grant date | — |
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- Title
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Abstract
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The present invention aims to provide a composition having excellent hydrophilicity, water permeability, mechanical strength, chemical durability, and low-fouling property, and capable of producing a porous polymer membrane from which a hydrophilic agent is less likely to be eluted. The composition of the present invention includes a vinylidene fluoride resin and a copolymer (A) including a vinyl alcohol unit and a fluoromonomer unit.
First claim
Opening claim text (preview).
1 . A composition comprising a vinylidene fluoride resin, and a copolymer (A) including a vinyl alcohol unit and a fluoromonomer unit, wherein a ratio by mass between the vinylidene fluoride resin and the copolymer (A) is 70/30 to 99/1. 2 . The composition according to claim 1 , wherein the copolymer (A) satisfies a ratio by mole between the vinyl alcohol unit and the fluoromonomer unit (vinyl alcohol unit/fluoromonomer unit) of 25 to 75/75 to 25. 3 . (canceled) 4 . A porous polymer membrane comprising the composition according to claim 1 . 5 . The porous polymer membrane according to claim 4 , which is produced by nonsolvent-induced phase separation, thermally induced phase separation, or combination of both. 6 . The porous polymer membrane according to claim 4 , which is a flat membrane or a hollow fiber membrane. 7 . The porous polymer membrane according to claim 4 , which is intended to be used in water treatment. 8 . A hydrophilic agent for a porous membrane that is formed from a vinylidene fluoride resin, the hydrophilic agent comprising: a copolymer (A) including a vinyl alcohol unit and a fluoromonomer unit, wherein the porous membrane comprises a composition, the composition comprises the vinylidene fluoride resin and the copolymer (A), a ratio by mass between the vinylidene fluoride resin and the copolymer (A) is 70/30 to 99/1.
Assignees
Inventors
Classifications
Hollow fibre membranes (manufacture of hollow fibres D01D5/24, D01F1/08) · CPC title
Homopolymers or copolymers or vinylidene fluoride · CPC title
Homopolymers or copolymers or tetrafluoroethene · CPC title
with non-fluorinated comonomers · CPC title
Polyvinylidene fluoride · CPC title
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- What does patent US2016145369A1 cover?
- The present invention aims to provide a composition having excellent hydrophilicity, water permeability, mechanical strength, chemical durability, and low-fouling property, and capable of producing a porous polymer membrane from which a hydrophilic agent is less likely to be eluted. The composition of the present invention includes a vinylidene fluoride resin and a copolymer (A) including a vin…
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08F216/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 26 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).