Flame retardant resin
AssigneePurdue Research Foundation
InventorsJeffrey Paul Youngblood, Matthew Korey, John Alan Howarter, Natalie Burgos
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Abstract
The present disclosure provides to a novel flame retardant resin, wherein the resin is a reaction product of an epoxy material, a curing agent, and a partially esterified tannic acid of formula I, wherein TA represents a tannic acid moiety, R1 represents an optionally substituted C1-C6 straight or branched alkyl, an optionally substituted C3-C6 cyclic ring, an optionally substituted phenyl group, or any combination thereof, and n is 2-10.
Claims9
A flame retardant resin, wherein the resin is a reaction product of an epoxy material, a curing agent, and a partially esterified tannic acid of formula I,
- wherein TA represents a tannic acid moiety, R1 represents an optionally substituted C1-C6 straight or branched alkyl, an optionally substituted C3-C6 cyclic ring, an optionally substituted phenyl group, or any combination thereof, n is 2-10;
- and
- wherein the partially esterified tannic acid refers to that about 8-40% of free hydroxy groups on the phenolic ring of the tannic acid (TA) are esterified.
A method of using a partially esterified tannic acid as a flame retardant additive in preparing a flame retardant resin, wherein the method comprises:
- providing a partially esterified tannic acid of formula I;
- providing an epoxy material;
- mixing the partially esterified tannic acid and the epoxy material;
- and
- curing the mixture of the partially esterified tannic acid and the epoxy material with a curing agent to provide a flame retardant resin;
- wherein TA represents a tannic acid moiety, R1 represents an optionally substituted C1-C6 straight or branched alkyl, an optionally substituted C3-C6 cyclic ring, an optionally substituted phenyl group, or any combination thereof, n is 2-10;
- and
- wherein the partially esterified tannic acid refers to that about 8-40% of free hydroxy groups on the phenolic ring of the tannic acid (TA) are esterified.
Dependencies are inferred from the claim text.