Binder compositions comprising lignin derivatives

摘要

The present disclosure provides an adhesive composition comprising derivatives of native lignin and an isocyanate-based binder such as methylene diphenyl diisocyanate. The present compositions may further comprise formaldehyde-based resins such as PF, UF, and MF. While not wishing to be bound by theory, it is believed that incorporating derivatives of native lignin in isocyanate compositions will reduce incidence of pre-curing.

主权项

1. A binder composition comprising liquid methylene diphenyl diisocyanate (MDI) and a derivative of native lignin, wherein the binder composition does not have any other liquid solvent, the derivative of native lignin has a phenolic hydroxyl content of from about 2 mmol/g to about 8 mmol/g and a polydispersity of from about 1 to about 5, wherein the composition is a homogeneous and stable liquid MDI-lignin composition.