Fast curing high glass transition temperature epoxy resin system
US-2016347903-A1 · Dec 1, 2016 · US
Fast curing high glass transition temperature epoxy resin system
US10308757B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10308757-B2 |
| Application number | US-201515325254-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 3, 2015 |
| Priority date | Nov 11, 2014 |
| Publication date | Jun 4, 2019 |
| Grant date | Jun 4, 2019 |
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Abstract
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A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.
First claim
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The invention claimed is: 1. A cured fiber-reinforced composite made in a process comprising introducing a curable reaction mixture into a mold containing reinforcing fibers and curing the curable reaction mixture at a temperature of 100 to 150° C. until the curable reaction mixture cures and attains a glass transition temperature of at least 150° C. and demolding the resulting cured fiber-reinforced composite at a demold time of 240 seconds or less, wherein the curable reaction systems comprises 1) an epoxy component having two or more epoxy resins, wherein at least 5% by weight of the epoxy resins is a 1,4-cyclohexanedimethanol diglycidyl ether having an epoxy equivalent weight of up to about 140 and at least one other epoxy resin is an epoxy novolac resin having an epoxy equivalent weight of about 156 to 300; and 2) a hardener component comprising triethylene tetraamine wherein at least 40% of the weight of the triethylene tetraamine is a linear triethylene tetraamine having the chemical structure H 2 N—CH 2 —CH 2 —NH—CH 2 —CH 2 —NH—CH 2 —CH 2 —NH 2 . 2. The cured fiber-reinforced composite of claim 1 , wherein the hardener component comprises over 90 wt % of triethylenetetraamine and the rest being 1,4-diazabicyclo[2,2,2]octane, based on the total weight of the hardener component.
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Frequently asked questions
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- What does patent US10308757B2 cover?
- A two-component curable epoxy resin system having an epoxy component containing a unique combination of two or more epoxy resins with at least one of the epoxy resins being an epoxy novolac type resin. The composite made from such resin system exhibits high glass transition temperature.
- Who is the assignee on this patent?
- Dow Global Technologies Llc
- What technology area does this patent fall under?
- Primary CPC classification C08G59/24. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 04 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).