Curable resin composition, cured product thereof, prepreg, and fiber-reinforced composite material
US-2015152259-A1 · Jun 4, 2015 · US
Epoxy systems employing triethylaminetetraamine and tin catalysts
US10023687B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10023687-B2 |
| Application number | US-201515308940-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 14, 2015 |
| Priority date | Jul 17, 2014 |
| Publication date | Jul 17, 2018 |
| Grant date | Jul 17, 2018 |
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- Title
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Abstract
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The invention relates to curable epoxy resin systems comprising polyethylene tetraamine and a tin catalyst as hardening agents, and optionally comprising 1,4-diaza[2.2.2]bicyclo octane. The invention also relates to articles made therefrom, including composites such as carbon fiber reinforced composites. The curable epoxy resins have rapid demold times and/or high glass temperature.
First claim
Opening claim text (preview).
The invention claimed is: 1. A curable resin system comprising: a) an epoxy component comprising a liquid epoxy resin wherein at least 80 weight percent of the liquid epoxy resin is one or more polyglycidyl ethers of a polyphenol having an epoxy equivalent weight of up to 250; and b) a hardener component comprising a tin (IV) catalyst comprising dimethyltin dineodecanoate in an amount of 0.01 to 3.0 wt % based on weight of the hardener component and 80 to 99.99 wt % of a polyethylene tetraamine mixture, based on weight of the hardener component. 2. The curable resin system of claim 1 , wherein the hardener component further comprises 1,4-diazabicyclo[2.2.2]octane, in an amount up to 15 wt %, based on weight of the hardener component. 3. The curable resin system of claim 1 comprising 10 to 20 parts by weight of the hardener component for every 100 parts by weight of the epoxy component. 4. The curable resin system of claim 1 further comprising a filler component. 5. The curable resin system of claim 1 having a demold time at least 15% shorter than the demold time of a comparative resin system that is identical to the curable resin system but comprises no tin catalyst. 6. The curable resin system of claim 1 having a demold time at least 15% shorter than the demold time of a comparative resin system that is identical to the curable resin system but comprises no tin catalyst or 1,4-diazabicyclo[2.2.2]octane. 7. A cured resin product obtained by curing the curable resin system of claim 1 . 8. The cured resin product of claim 7 , which is a fiber composite article. 9. The cured resin product of claim 7 , which is obtained by resin transfer molding.
Assignees
Inventors
Classifications
characterised by the catalysts used · CPC title
- C08G59/502Primary
Polyalkylene polyamines · CPC title
containing nitrogen · CPC title
predominantly of synthetic material (working of plastics or substances in a plastic state B29) · CPC title
Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title
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Frequently asked questions
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- What does patent US10023687B2 cover?
- The invention relates to curable epoxy resin systems comprising polyethylene tetraamine and a tin catalyst as hardening agents, and optionally comprising 1,4-diaza[2.2.2]bicyclo octane. The invention also relates to articles made therefrom, including composites such as carbon fiber reinforced composites. The curable epoxy resins have rapid demold times and/or high glass temperature.
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C08G59/502. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 17 2018 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).