초록 ▼

A novel resin for binding composite lignocellulosic, cellulosic and non-cellulosic products is disclosed. The resin is comprised of one or more isocyanates, one or more saccharides, one or more polyols, and water. Preferaby, the saccharide is a polysaccharide comprised of corn syrup. Preferably, the

A novel resin for binding composite lignocellulosic, cellulosic and non-cellulosic products is disclosed. The resin is comprised of one or more isocyanates, one or more saccharides, one or more polyols, and water. Preferaby, the saccharide is a polysaccharide comprised of corn syrup. Preferably, the isocyanate is a polyisocyanate and the polyol is an ethylene glycol. Also disclosed are methods for preparing and applying the resin as well as the products prepared from the resin.

대표청구항 ▼

1. A resin for binding lignocellulosic products comprising:a. one or more saccharides;c. one or more isocyanates;b. one or more isocyanates;d. water, wherein the one or more polyols comprise 1,2-propylene glycol. 2. The resin of claim 1 wherein the one or more saccharides are present at a concentrat

1. A resin for binding lignocellulosic products comprising:a. one or more saccharides;c. one or more isocyanates;b. one or more isocyanates;d. water, wherein the one or more polyols comprise 1,2-propylene glycol. 2. The resin of claim 1 wherein the one or more saccharides are present at a concentration of between about 25 and about 65 weight percent of the resin, the one or more isocyanates are present at a concentration of between about 1 and about 30 weight percent of the resin, and the one or more polyols are present at a concentration of between about 1 and about 10 weight percent of the resin. 3. The resin of claim 1 wherein the one or more saccharides are present at a concentration of between about 50 and about 65 weight percent of the resin, the one or more isocyanates are present at a concentration of between about 5 and about 20 weight percent of the resin, and the one or more polyols are present at a concentration of between about 3 and about 5 weight percent of the resin. 4. The resin of claim 1 wherein the one or more saccharides comprise a polysaccharide. 5. The resin of claim 4 wherein the polysaccharide comprises corn syrup. 6. The resin of claim 1 wherein the one or more isocyanates comprise a polyisocyanate. 7. The resin of claim 6 wherein the polyisocyanate comprises a diphenylmethane diisocyanate. 8. The resin of claim 6 wherein the polyisocyanate is present at a concentration of about 7.5 weight percent of the resin or less. 9. A method for preparing an aqueous resin for binding lignocellulosic products comprisinga. mixing one or more saccharides with one or more isocyanates; andb. then mixing the one or more saccharides and the one or more isocyanates with water. 10. The method of claim 9 wherein the one or more saccharides comprise a polysaccharide. 11. The method of claim 10 wherein the polysaccharide comprises corn syrup. 12. The method of claim 9 further comprising mixing the one or more isocyanates with one or more polyols prior to step (a), wherein the one or more polyols comprise a polyol selected from the group consisting of ethylene glycol; 1,2-propylene glycol; 1,3-propylene glycol; hexane 1,6-diol; 2 methyl-1,3-propanediol; glycerol; mannitol; sorbitol; diethylene glycol; triethylene glycol; polyethylene glycols; polypropylene glycols; and butylene, dibutylene, and polybutylene glycols. 13. A composite product prepared from a resin comprising:a. one or more saccharides;b. one or more isocyanates;c. one or more polyols; andd. water,wherein the one or more polyols comprise a polyol selected from the group consisting of ethylene glycol; 1,2-propylene glycol; 1,3-propylene glycol; hexane 1,6-diol; 2 methyl-1,3-propanediol; glycerol; mannitol; sorbitol; diethylene glycol; triethylene glycol; polyethylene glycols; polypropylene glycols; and butylene, dibutylene, and polybutylene glycols, and wherein the composite product is a composite wood product. 14. The composite wood product of claim 13 wherein the one or more saccharides are present at a concentration of between about 25 and about 65 weight percent of the resin, the one or more isocyanates are present at a concentration of between about 1 and about 30 weight percent of the resin, and the one or more polyols are present at a concentration of between about 1 and about 10 weight percent of the resin. 15. The composite wood product of claim 13 wherein the one or more saccharides are present at a concentration of between about 50 and about 65 weight percent of the resin, the one or more isocyanates are present at a concentration of between about 5 and about 20 weight percent of the resin, and the one or more polyols are present at a concentration of between about 3 and about 5 weight percent of the resin. 16. The composite wood product of claim 13 wherein the one or more saccharides comprise a polysaccharide. 17. The composite wood product of claim 16 wherein the polysaccharide comprises corn syrup. 18. A composite product prepared from a resin comp rising:a. one or more saccharides;b. one or more isocyanates;c. one or more polyols; andd. water,wherein the composite product is a composite wood product and wherein the one or more polyols comprise 1,2-propylene glycol. 19. The composite wood product of claim 13 wherein the one or more isocyanates comprise a polyisocyanate. 20. The composite wood product of claim 19 wherein the polyisocyanate comprises a diphenylmethane diisocyanate. 21. The composite wood product of claim 19 wherein the polyisocyanate is present at a concentration of about 7.5 weight percent of the rosin or less. 22. The composite wood product of claim 13 wherein the composite wood product comprises a particleboard. 23. The composite wood product of claim 13 wherein the composite wood product comprises a medium density fiberboard. 24. A method for preparing a composite product, comprising: preparing a binder comprisinga. one or more saccharides;b. one or more isocyanates;c. one or more polyols; andd. water,wherein the one or more polyols comprise a polyol selected from the group consisting of ethylene glycol; 1,2-propylene glycol; 1,3-propylene glycol; hexane 1,6-diol, 2 methyl-1,3-propanediol; glycerol; mannitol; sorbitol; diethylene glycol; triethylene glycol; polyethylene glycols; polypropylene glycols; and butylene, dibutylene, and polybutylene glycols; and applying the resin to particulate to form the composite product. 25. The method of claim 24 wherein the particulate comprises lignocellulosic material. 26. The method of claim 24 wherein the particulate comprises polyurethane, plastic, organic polymer systems, or metal. 27. The method of claim 25 wherein the composite product is plywood, oriented strand board, particleboard, or medium density fiberboard.