Lignin-based bonding resin
AssigneeStora Enso OYJ
InventorsAshar Zafar, Sara Fäldt, Huynh Tram Anh Pham
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Abstract
The present invention relates to a bonding resin comprising lignin and plasticizer. The invention also relates to a method for producing the bonding resin as well as the use of the bonding resin. The bonding resin is useful for example in the manufacture of laminates, mineral wool insulation and wood products such as plywood, oriented strandboard (OSB), laminated veneer lumber (LVL), medium density fiberboards (MDF), high density fiberboards (HDF), parquet flooring, curved plywood, veneered particleboards, veneered MDF or particle boards. The bonding resin is also useful for example in composites, molding compounds and foundry applications.
Claims11
A bonding resin comprising:
- an aqueous solution comprising:
- lignin, and ammonia, or an organic base, or both, and
- a plasticizer,
- wherein the lignin has not been chemically modified and
- wherein a weight ratio between the plasticizer and the lignin, calculated on basis of dry weight of each component, is from 0.1:10 to 10:1.
A method for preparing a bonding resin, the method comprising:
- mixing an aqueous solution of lignin and ammonia, or an organic base, or both with a plasticizer to form a bonding resin,
- wherein the lignin has not been chemically modified and
- wherein a weight ratio between the plasticizer and the lignin, calculated on a basis of dry weight of each component, is from 0.1:10 to 10:1.
Dependencies are inferred from the claim text.