Reciprocating-plate column reactor for epoxidation of epoxy resins
US-9527950-B2 · Dec 27, 2016 · US
Methods for producing thermosetting epoxy resins
US9416218B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9416218-B2 |
| Application number | US-201013322320-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 27, 2010 |
| Priority date | May 27, 2009 |
| Publication date | Aug 16, 2016 |
| Grant date | Aug 16, 2016 |
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Abstract
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The present application relates to a method for preparing epoxy resins from a mixture of epoxidized phenolic compounds, wherein said epoxidized phenolic compounds are obtained by the epoxidation of natural phenolic compounds selected from the group comprising simple phenol, acid-phenol, coumarin, naphthoquinone, stillbenoid, flavonoid, isoflavanoid, anthocyanin, condensed tannin and hydrolyzable tannin.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for preparing epoxy resins from a mixture of epoxidized phenolic compounds, comprising: epoxidizing natural phenolic compounds in the presence of an oxirane substituted with at least one chlorine or bromine atom, said natural phenolic compounds being polyphenolic compounds selected from the group consisting of naphthoquinones, stillbenoids, flavonoids, isoflavonoids, anthocyanins, condensed tannins and hydrolyzable tannins, in order to obtain a mixture of epoxidized phenolic compounds. 2. The method according to claim 1 , wherein the natural phenolic compounds used for the synthesis of epoxidized phenolic compounds are flavonoid, condensed tannin or hydrolyzable tannin polyphenols. 3. The method according to claim 1 , wherein said natural phenolic compounds are extracted: from wood, or products from forestry, from freshwater or halophilic algae, or from vine, grape, fruit or products from wine growing or wine making. 4. The method according to claim 1 , wherein the natural phenolic compounds are condensed tannins or hydrolyzable tannins, said method comprising prior to the epoxidation step, a step for depolymerization of said natural phenolic compounds in the presence of acid and of nucleophilic reagents. 5. An epoxy resin which is obtained by the method according to claim 1 . 6. The method according to claim 1 , wherein the natural phenolic compounds used for the synthesis of epoxidized phenolic compounds are flavonoid polyphenols. 7. The method according to claim 1 , wherein the natural phenolic compounds used for the synthesis of epoxidized phenolic compounds are condensed tannin polyphenols. 8. The method according to claim 1 , wherein the natural phenolic compounds used for the synthesis of epoxidized phenolic compounds are hydrolyzable tannin polyphenols.
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Classifications
characterised by the preparation process or apparatus used · CPC title
obtained by epoxidation of unsaturated precursor, e.g. polymer or monomer · CPC title
- C08G59/063Primary
with epihalohydrins · CPC title
Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title
Amines · CPC title
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- What does patent US9416218B2 cover?
- The present application relates to a method for preparing epoxy resins from a mixture of epoxidized phenolic compounds, wherein said epoxidized phenolic compounds are obtained by the epoxidation of natural phenolic compounds selected from the group comprising simple phenol, acid-phenol, coumarin, naphthoquinone, stillbenoid, flavonoid, isoflavanoid, anthocyanin, condensed tannin and hydrolyzabl…
- Who is the assignee on this patent?
- Boutevin Bernard, Caillol Sylvain, Burguiere Carine, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification C08G59/063. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 16 2016 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).