Polyimide-based binder for power storage device, electrode mixture paste, negative electrode active material layer, negative electrode sheet for power storage device, and power storage device
US-12176543-B2 · Dec 24, 2024 · US
Polyimide compositions and methods
US2016208097A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016208097-A1 |
| Application number | US-201514942043-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 16, 2015 |
| Priority date | Jan 15, 2015 |
| Publication date | Jul 21, 2016 |
| Grant date | — |
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Abstract
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Methods of manufacturing polyimides using a solvent system that is free of N-methylpyrrolidone are provided. Compositions useful in the deposition of polyimide films that are free of N-methylpyrrolidone are also provided.
First claim
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What is claimed is: 1 . A composition comprising one or more polyimide polymers and/or polyamic acid polymers and a solvent mixture comprising dimethylsulfoxide, triethyl phosphate, and gamma-butyrolactone. 2 . The composition of claim 1 wherein the solvent mixture comprises 10 to 80 wt % dimethylsulfoxide, 10 to 80 wt % triethyl phosphate, and 10 to 80 wt % gamma-butyrolactone. 3 . The composition of claim 2 wherein the solvent mixture comprises 20 to 60 wt % dimethylsulfoxide, 20 to 60 wt % triethyl phosphate, and 20 to 60 wt % gamma-butyrolactone. 4 . The composition of claim 3 wherein the solvent mixture comprises 25 to 40 wt % dimethylsulfoxide, 25 to 40 wt % triethyl phosphate, and 20 to 50 wt % gamma-butyrolactone. 5 . The composition of claim 1 wherein the solvent mixture comprises dimethylsulfoxide, triethyl phosphate, and gamma-butyrolactone in a weight ratio of 1/1/0.75-1. 6 . The composition of claim 1 wherein the polyimide polymer and/or polyamic acid polymer is soluble in N-methylpyrrolidone. 7 . The composition of claim 1 wherein the composition is free of N-methylpyrrolidone. 8 . The composition of claim 1 wherein the composition is free of N-alkylpyrrolidone. 9 . The composition of claim 8 wherein the composition is free of dimethylacetamide and dimethylformamide. 10 . A process for preparing polyimide polymers comprising: reacting one or more dianhydride monomers with one or more diamine monomers in a solvent mixture comprising dimethylsulfoxide, triethyl phosphate, and gamma-butyrolactone to form a polyamic acid polymer; and imidizing the polyamic acid polymer to form a polyimide polymer. 11 . The process of claim 10 wherein the solvent mixture comprises 10 to 80 wt % dimethylsulfoxide, 10 to 80 wt % triethyl phosphate, and 10 to 80 wt % gamma-butyrolactone. 12 . The process of claim 10 wherein at least one diamine monomer is an aryl diamine monomer. 13 . The process of claim 10 wherein at least one dianhydride monomer is an aryl dianhydride monomer or an alicyclic dianhydride monomer.
Assignees
Inventors
Classifications
- C08G73/1032Primary
characterised by the solvent(s) used · CPC title
- C08L79/08Primary
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title
from tetracarboxylic acids or derivatives and diamines · CPC title
Manufacture of films or sheets · CPC title
- C08G73/1067Primary
Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound · CPC title
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Frequently asked questions
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- What does patent US2016208097A1 cover?
- Methods of manufacturing polyimides using a solvent system that is free of N-methylpyrrolidone are provided. Compositions useful in the deposition of polyimide films that are free of N-methylpyrrolidone are also provided.
- Who is the assignee on this patent?
- Rohm & Haas Elect Mat, Rohm & Haas
- What technology area does this patent fall under?
- Primary CPC classification C08G73/1032. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 21 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).