摘要:
The invention relates to a method for treating lignin, wherein the method comprises the following steps: a) dissolving lignin into an aqueous composition, which contains a compound selected from the class of phenols, while keeping the temperature of the composition at 0-16° C.; and b) allowing the composition to react while keeping the temperature of the composition at 60-100° C. and the pH of the composition at a pH valise of 6-14. The invention relates further to a method for producing a binder composition and to different applications thereof.
摘要:
The present invention relates to a method for fractionating lignin, wherein the method comprises the following steps: (i) dissolving lignin into a mixture containing organic solvent and water; and (ii) ultrafiltrating the mixture formed in step (i) through one or more filtration membranes for producing a predetermined number of lignin fractions, wherein each fraction contains lignin with a molecular weight within a predetermined range. The present invention further relates to a lignin fraction and to the uses thereof.
摘要:
The present invention relates to a method for increasing the reactivity of lignin, wherein the method comprises the following steps: a) forming, under heating at a temperature of 30 - 70 °C, an aqueous dispersion comprising alkali and lignin, wherein the alkali comprises a hydroxide of an alkali metal; and b) heating the dispersion formed in step a) at a temperature of 50 - 95 °C for producing alkalated lignin.
摘要:
The present invention relates to a method for producing a binder composition, wherein the method comprises the following steps: (i) forming an aqueous composition comprising reactant components including lignin molecules of 11-60 lignin units, lignin molecules of 1-10 lignin units, polymerizable substance and crosslinking agent in the presence of a catalyst; and (ii) cooking the composition at a temperature of 60-95° C. for polymerizing the reactant components until a binder composition with a predetermined viscosity value is formed.
摘要:
The present invention relates to feed composition for modulating animal digestive tract microbiota wherein the modulating comprises adding an extract of birch bark to animal feed. The invention further relates to the use of the birch bark extract for enhancement of animal performance and gastrointestinal health, for a preventing gastrointestinal disorders of animals, for enhancing nutrient absorption in upper and lower digestive tract, for changing microbial population and/or its metabolism, for decreasing adverse environmental effects and/or for decreasing the formation and/or absorption of harmful substances in the animal digestive tract.