Method For Preparing A Lignosulfonate Polymer

• Main Authors: BISCHOF, Sabrina, ORTNER, Andreas, GUEBITZ, Georg, NYANHONGO, Gibson Stephen
• Format: Patent
• Language: English
• Published: 23.06.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AGRICULTURE; ANIMAL HUSBANDRY; BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS; ENZYMOLOGY; FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE; FISHING; FORESTRY; GENERAL PROCESSES OF COMPOUNDING; HORTICULTURE; HUMAN NECESSITIES; HUNTING; METALLURGY; MICROBIOLOGY; MUTATION OR GENETIC ENGINEERING; ORGANIC MACROMOLECULAR COMPOUNDS; SPIRITS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRAPPING; VINEGAR; WATERING; WINE; WORKING-UP

A method is provided for preparing a water-insoluble lignosulfonate polymer from a first solution containing lignosulfonate precursors, which involvesa) separating the lignosulfonate precursors from the first solution and providing a second solution with at least 5 wt % of lignosulfonate precursors obtained from the first solution, wherein the separating comprises filtering out components with a predefined particle diameter and separating low-molecular weight components including salts and low-molecular organic compounds,b) adding a radical-forming enzyme and gas to the second solution, wherein the gas comprises oxygen, andc) polymerizing the lignosulfonate precursors of the resultant solution of b).Other related aspects are described and claimed.