Rapid curing epoxy repair composition and use thereof
US-2024360306-A1 · Oct 31, 2024 · US
Fiber reinforced composite
US9580593B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9580593-B2 |
| Application number | US-201414890068-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 15, 2014 |
| Priority date | May 17, 2013 |
| Publication date | Feb 28, 2017 |
| Grant date | Feb 28, 2017 |
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- Title
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- Abstract
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Abstract
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The present invention relates to a fiber reinforced composite comprising a reinforcing constituent of fibers embedded in a resin matrix, wherein the resin matrix comprises epoxy resin crosslinked with aminated lignin. The invention further relates to a method for the production of a fiber reinforced composite.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fiber reinforced composite comprising a reinforcing constituent of fibers embedded in a resin matrix, characterized in that the resin matrix comprises epoxy resin crosslinked with aminated lignin, and contains less than 5 weight-% of lignin based carbohydrates, wherein the aminated lignin is lignin that has been subjected to an amination reaction with polyamine. 2. The fiber reinforced composite of claim 1 , wherein the resin matrix contains less than 1.5 weight-% of lignin based carbohydrates. 3. The fiber reinforced composite of claim 2 , wherein the resin matrix further comprises unmodified lignin crosslinked with aminated lignin. 4. The fiber reinforced composite of claim 2 , wherein the weight ratio of aminated lignin to epoxy resin is 1:10 to 3:2. 5. The fiber reinforced composite of claim 2 , wherein the weight ratio of aminated lignin to epoxy resin is 1:6 to 1:1. 6. The fiber reinforced composite of claim 1 , wherein the resin matrix further comprises unmodified lignin crosslinked with aminated lignin. 7. The fiber reinforced composite of claim 6 , wherein the weight ratio of unmodified lignin to epoxy resin is 1:20 to 1:1. 8. The fiber reinforced composite of claim 6 , wherein the weight ratio of aminated lignin to epoxy resin is 1:10 to 3:2. 9. The fiber reinforced composite of claim 6 , wherein the weight ratio of unmodified lignin to epoxy resin is 1:10 to 2:3. 10. The fiber reinforced composite of claim 6 , wherein the weight ratio of aminated lignin to epoxy resin is 1:6 to 1:1. 11. The fiber reinforced composite of claim 1 , wherein the weight ratio of aminated lignin to epoxy resin is 1:10 to 3:2. 12. A fiber reinforced composite comprising a reinforcing constituent of fibers embedded in a resin matrix produced by a method comprising the steps of (a) forming a resin matrix by mixing epoxy resin and aminated lignin containing less than 5 weight-% of carbohydrates and mixing the resin matrix with fibers; and (b) heating the composition formed in step a) at a temperature of 40-180° C. for crosslinking epoxy resin and aminated lignin, wherein the aminated lignin is lignin that has been subjected to an amination reaction with polyamine.
Assignees
Inventors
Classifications
Glass · CPC title
- C08L63/00Primary
Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title
Lignin · CPC title
containing two or more polymers of the same C08L -group · CPC title
Lignocellulosic material, e.g. wood, straw or bagasse {(manufacture of articles made from lignocellulosic material by dry processes B27N)} · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9580593B2 cover?
- The present invention relates to a fiber reinforced composite comprising a reinforcing constituent of fibers embedded in a resin matrix, wherein the resin matrix comprises epoxy resin crosslinked with aminated lignin. The invention further relates to a method for the production of a fiber reinforced composite.
- Who is the assignee on this patent?
- Upm Kymmene Corp
- What technology area does this patent fall under?
- Primary CPC classification C08L63/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 28 2017 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).