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US 11,702,505 B2Granted
Process for the production of epoxy resins
AssigneeVito NV
InventorsPablo Ortiz, Richard Vendamme
Life of this patent
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Abstract
A process is disclosed for the production of an epoxy resin. This process includes providing lignin, one or more acids and/or esters derived from epoxidized vegetable oil(s), optionally a solvent and optionally a catalyst, to form a reactive mixture. The reactive mixture is mixed and cured in the presence of a curing agent to form the epoxy resin.
Claims20
A process for the production of an epoxy resin, the process comprising the following steps:
- (a) directly mixing lignin and one or a combination of:
- one or more acids derived from epoxidized vegetable oil(s) and one or more esters derived from epoxidized vegetable oil(s) to form a reactive mixture;
- and
- (b) mixing and curing the reactive mixture in the presence of a curing agent to form the epoxy resin;
- wherein an intermediate product is formed during step (a), and the intermediate product is cured in response to the reactive mixture being mixed in the presence of the curing agent in step (b);
- wherein the lignin is selected from one or combinations of:
- fractionated lignin, depolymerized lignin, Kraft lignoboost lignin, a solvent-extracted fraction of depolymerized lignin, and a solvent-extracted fraction of Kraft lignoboost lignin;
- wherein the one or more acids derived from epoxidized vegetable oil(s) are represented by the general formula
- and the one or more esters derived from epoxidized vegetable oil(s) are represented by the general formula
- and
- wherein:
- R is hydrogen or any linear or branched alkyl chain of up to 6 carbon atoms;
- n=7, 9, or 11;
- m=1, 2, or 3;
- o=1 to 14.
12 more elements
A process for the production of an epoxy resin, the process comprising:
- directly mixing a solvent, lignin, and one or a combination of:
- one or more acids derived from epoxidized vegetable oil(s) and one or more esters derived from epoxidized vegetable oil(s) to form a reactive mixture;
- and
- mixing and curing the reactive mixture in the presence of a curing agent to form the epoxy resin;
- wherein the lignin is selected from one or combinations of:
- fractionated lignin, depolymerized lignin, Kraft lionoboost lignin, a solvent-extracted fraction of depolymerized lignin, and a solvent-extracted fraction of Kraft lionoboost lignin;
- wherein the solvent is evaporated during or after mixing and before adding the curing agent, after adding the curing agent and before the curing, or during the curing;
- wherein the one or more acids derived from epoxidized vegetable oil(s) are represented by the general formula
- and the one or more esters derived from epoxidized vegetable oil(s) are represented by the general formula
- and
- wherein:
- R is hydrogen or any linear or branched alkyl chain of up to 6 carbon atoms;
- n=7, 9, or 11;
- m=1, 2, or 3;
- o=1 to 14.
12 more elements
Dependencies are inferred from the claim text.