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US 12,122,882 B2Granted
Multi-part lignin-based resin system for decorative laminates
AssigneeWilsonart LLC
InventorPhilippe Wloczysiak
Life of this patent
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Abstract
A method for making a multi-part resin system includes forming a lignin-formaldehyde resin, forming a phenol-formaldehyde resin, and mixing the lignin-formaldehyde resin and the phenol-formaldehyde to form the multi-part resin system.
Claims18
A method for making a multi-part resin system used in the manufacture of decorative laminates, comprising:
- forming a lignin-formaldehyde resin consisting essentially of water, lignin, alkali, and formaldehyde;
- forming a phenol-formaldehyde resin;
- mixing the lignin-formaldehyde resin and the phenol-formaldehyde resin to form the multi-part resin system;
- diluting the multi-part resin system with methanol and/or water such that it has a viscosity from approximately 20 cps to approximately 70 cps and adjusting the pH to between 8.5 and 9.5.
1 more element
A multi-part resin system, comprising:
- a lignin-formaldehyde resin consisting essentially of water, lignin, alkali, and formaldehyde;
- and
- a phenolic resin.
A method for making a decorative laminate, comprising:
- preparing a decorative sheet impregnated;
- preparing at least one core layer sheet impregnated, wherein preparing the at least one core layer sheet includes making a multi-part resin system and impregnating the at least one core layer sheet with the multi-part resin system, wherein making the multi-part resin system includes forming a lignin-formaldehyde resin consisting essentially of water, lignin, alkali, and formaldehyde;
- forming a phenol-formaldehyde;
- mixing the lignin-formaldehyde resin and the phenol-formaldehyde to form the multi-part resin system, and diluting the multi-part resin system with methanol and/or water such that it has a viscosity from approximately 20 cps to approximately 70 cps and adjusting the pH to between 8.5 and 9.5;
- pressing and heating the decorative sheet and the at least one core layer sheet to form a decorative laminate.
2 more elements
Dependencies are inferred from the claim text.