Lignin-based resins for oil-resistance paper packaging
AssigneeUniversity of Tennessee Research Foundation
InventorsShahaboddin Saedi, Siqun Wang
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Abstract
Resole resin compositions were made from a reaction of a lignin, an aldehyde, and a strong base, which is free of formaldehyde and free of per- and poly-fluoroalkyl substances. The aldehyde is one or more of a straight or branched chain dialdehyde, a phenolic aldehyde, and a furanic aldehyde. The resole resin is coated on a paper substrate to produce an oil resistant paper product suitable for food packaging, tableware, oil-resistant liners, and the like. Methods of making the resole resin composition and the paper products are also described herein.
Claims20
A resole resin composition comprising:
- a reaction product of a lignin, an aldehyde, and a strong base, wherein said composition is free of formaldehyde and is free of per- and poly-fluoroalkyl substances;
- wherein the aldehyde is one or more of a straight or branched chain dialdehyde, a phenolic aldehyde, and a furanic aldehyde.
A method of preparing a resin, comprising:
- mixing a lignin with an aldehyde under alkaline conditions before or while heating to between 80° C. and 90° C.;
- and
- isolating the resulting resin.
Dependencies are inferred from the claim text.