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US-12140831-B2 · Nov 12, 2024 · US
Preparation of poly amidoimides
US10920019B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10920019-B2 |
| Application number | US-201615762979-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 2, 2016 |
| Priority date | Sep 25, 2015 |
| Publication date | Feb 16, 2021 |
| Grant date | Feb 16, 2021 |
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- Title
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- Abstract
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Abstract
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A liquid composition comprising (a) a solvent or solvent mixture containing at least 50% by weight, based on the total amount of solvents, of a dioxabicycloalkane derivative, (b) an aromatic tricarboxylic acid anhydride, and (c) an aromatic diisocyanate, can be used as coating composition for metal surfaces.
First claim
Opening claim text (preview).
What is claimed is: 1. A liquid composition comprising (a) a solvent or solvent mixture containing at least 50% by weight, based on the total amount of solvents, of a dioxabicycloalkane derivative, (b) an aromatic tricarboxylic acid anhydride, and (c) an aromatic diisocyanate. 2. A composition according to claim 1 comprising as component (a) a derivative of 2,8-dioxabicyclo[3.2.1]octane or 6,8-dioxabicyclo[3.2.1]octane. 3. A composition according to claim 1 comprising as component (a) 6,8-dioxabicyclo[3.2.1]octan-4-one. 4. A composition according to claim 1 comprising as component (a) a solvent or solvent mixture containing 90-100% by weight of a dioxabicycloalkane derivative. 5. A composition according to claim 1 containing as component (b) trimellitic acid anhydride. 6. A composition according to claim 1 containing as component (c) 4,4′-diisocyanatodiphenylmethane. 7. A composition according to claim 1 wherein the amount of component (a) is 60-95% by weight, based on the total composition, and the total amount of components (b)+(c) is 5-40% by weight, based on the total composition. 8. A composition according to claim 2 containing as component (b) trimellitic acid anhydride. 9. A composition according to claim 3 containing as component (b) trimellitic acid anhydride. 10. A composition according to claim 4 containing as component (b) trimellitic acid anhydride. 11. A composition according to claim 2 containing as component (c) 4,4′-diisocyanatodiphenylmethane. 12. A composition according to claim 3 containing as component (c) 4,4′-diisocyanatodiphenylmethane. 13. A composition according to claim 4 containing as component (c) 4,4′-diisocyanatodiphenylmethane. 14. A composition according to claim 5 containing as component (c) 4,4′-diisocyanatodiphenylmethane.
Assignees
Inventors
Classifications
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors · CPC title
- C08G73/14Primary
Polyamide-imides · CPC title
Wholly aromatic polyimides, i.e. having both tetracarboxylic and diamino moieties aromatically bound · CPC title
from tetracarboxylic acids or derivatives and diisocyanates · CPC title
containing only one alkylene bisphenyl group · CPC title
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Frequently asked questions
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- What does patent US10920019B2 cover?
- A liquid composition comprising (a) a solvent or solvent mixture containing at least 50% by weight, based on the total amount of solvents, of a dioxabicycloalkane derivative, (b) an aromatic tricarboxylic acid anhydride, and (c) an aromatic diisocyanate, can be used as coating composition for metal surfaces.
- Who is the assignee on this patent?
- Huntsman Int Llc
- What technology area does this patent fall under?
- Primary CPC classification C08G73/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 16 2021 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).