METHOD FOR INCREASING THE REACTIVITY OF LIGNIN

• Main Authors: SUVI PIETARINEN, OKKO RINGENA, VALKONEN SANNA
• Format: Patent
• Language: English; Japanese
• Published: 04.07.2019
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES

To provide a method for increasing the reactivity of lignin.SOLUTION: The method comprises the following steps: a) forming, under heating at a temperature of 71-94°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 the step a) at a temperature of 50-95°C for producing alkalated lignin.SELECTED DRAWING: None 【課題】リグニンの反応性を増加させる方法の提供。【解決手段】以下のステップを含む。ａ）７１〜９４℃の温度での加熱下で、アルカリおよびリグニンを含む水性分散物を形成するステップであって、ここでアルカリはアルカリ金属の水酸化物を含む、ステップ、およびｂ）アルカリ化リグニンを生成するために、ステップａ）で形成された分散物を５０〜９５℃の温度で加熱するステップ。【選択図】なし