Epoxy resin composition, prepreg, and carbon fiber-reinforced composite material
US-2016152785-A1 · Jun 2, 2016 · US
Amino benzoates or benzamides as curing agents for epoxy resins
US10040897B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10040897-B2 |
| Application number | US-201515110927-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 6, 2015 |
| Priority date | Feb 6, 2014 |
| Publication date | Aug 7, 2018 |
| Grant date | Aug 7, 2018 |
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- Title
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Abstract
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Amino benzoates have been found to be useful curing agents for epoxy resins particularly para amino benzoates containing at least two primary amine groups and at least two carboxyl moieties, the amino benzoates are particularly useful as curatives in prepregs.
First claim
Opening claim text (preview).
The invention claimed is: 1. An epoxy resin formulation which consists of a difunctional epoxy resin or a trifunctional epoxy resin and a sufficient amount of a curing agent to provide onset of curing of said epoxy resin formulation in the range of temperatures from 152° C. to 175° C. said curing agent being selected from the group consisting of an amino benzoate or amino benzamide having the following formulas: and counterparts in which the amino group is in the meta position; 2. An epoxy resin formulation according to claim 1 wherein said epoxy resin formulation consists of said difunctional epoxy resin and said curing agent. 3. An epoxy resin formulation according to claim 1 wherein said epoxy resin formulation consists of said trifunctional epoxy resin and said curing agent.
Assignees
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Classifications
Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title
Fibres or whiskers · CPC title
- C08G59/5033Primary
aromatic · CPC title
Amino amides> · CPC title
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Frequently asked questions
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- What does patent US10040897B2 cover?
- Amino benzoates have been found to be useful curing agents for epoxy resins particularly para amino benzoates containing at least two primary amine groups and at least two carboxyl moieties, the amino benzoates are particularly useful as curatives in prepregs.
- Who is the assignee on this patent?
- Hexcel Composites Ltd, Hexcel Corp, Hexcel Composites
- What technology area does this patent fall under?
- Primary CPC classification C08G59/5033. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 07 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).