Coupling of distillative purification with a partial condenser for pre-purification of isophoronediamine
US-2017298003-A1 · Oct 19, 2017 · US
Hardener composition including 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine
US10173979B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10173979-B2 |
| Application number | US-201715832047-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 5, 2017 |
| Priority date | Jun 10, 2016 |
| Publication date | Jan 8, 2019 |
| Grant date | Jan 8, 2019 |
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- Title
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- Abstract
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Abstract
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The present invention relates to 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine, which can be used as hardener in epoxide applications.
First claim
Opening claim text (preview).
The invention claimed is: 1. A hardener in epoxy resin composition, the hardener comprising 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine of formula 1 2. The hardener of claim 1 wherein the epoxy resin composition is a prepolymer comprising two or more epoxy groups per molecule. 3. The hardener of claim 1 wherein the epoxy resin composition is selected from the group consisting of polyepoxides based on bisphenol A diglycidyl ether, polyepoxides based on bisphenol F diglycidyl ether, and cycloaliphatic epoxy resin. 4. The hardener of claim 1 wherein the epoxy resin composition comprises bisphenol A diglycidyl ether. 5. The hardener of claim 1 wherein the epoxy resin composition comprises bisphenol F diglycidyl ether. 6. A composition comprising a) a hardener comprising 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine of formula 1 and b) an epoxy resin composition. 7. The composition of claim 6 wherein the epoxy resin composition is a prepolymer comprising two or more epoxy groups per molecule. 8. The composition of claim 6 wherein the epoxy resin composition is selected from the group consisting of polyepoxides based on bisphenol A diglycidyl ether, polyepoxides based on bisphenol F diglycidyl ether, and cycloaliphatic epoxy resin. 9. The composition of claim 6 wherein the epoxy resin composition comprises bisphenol A diglycidyl ether. 10. The composition of claim 6 wherein the epoxy resin composition comprises bisphenol F diglycidyl ether. 11. The composition of claim 6 wherein the epoxy resin comprises a mixture of bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.
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Classifications
having one nitrogen atom in the ring · CPC title
- C07D211/26Primary
with hydrocarbon radicals, substituted by nitrogen atoms · CPC title
with hydrocarbon radicals, substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals · CPC title
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Frequently asked questions
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- What does patent US10173979B2 cover?
- The present invention relates to 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine, which can be used as hardener in epoxide applications.
- Who is the assignee on this patent?
- Evonik Degussa Gmbh
- What technology area does this patent fall under?
- Primary CPC classification C07D211/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 08 2019 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).