METHOD FOR PRODUCING ACID-MODIFIED POLYOLEFIN RESIN AQUEOUS DISPERSION

• Main Authors: NISHIMURA YURIKO, SHIBA YOSHITO
• Format: Patent
• Language: English; Japanese
• Published: 25.10.2018
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a method for producing an acid-modified polyolefin resin aqueous dispersion that can complete desolvation in a short time, in a desolvation step for an organic solvent contained in an aqueous dispersion of an acid-modified polyolefin resin, and can reduce the occurrence of scum in a treatment tank.SOLUTION: A method for producing an acid-modified polyolefin resin aqueous dispersion contains the following Step 1 and Step 2. Step (1): from an acid-modified polyolefin resin, an organic solvent, and water as the raw materials, a dispersion of the acid-modified polyolefin resin is obtained. Step (2): in the presence of a silicone-based antifoaming agent, the organic solvent is removed.SELECTED DRAWING: None 【課題】酸変性ポリオレフィン樹脂の水性分散体に含有される有機溶剤の脱溶剤処理工程において、短時間で脱溶剤することができ、また処理槽のスカム発生量を低減することができる、酸変性ポリオレフィン樹脂水性分散体の製造方法を提供する。【解決手段】下記工程１と工程２とを含むことを特徴とする酸変性ポリオレフィン樹脂水性分散体の製造方法。（１）酸変性ポリオレフィン樹脂、有機溶剤、および水を原料として酸変性ポリオレフィン樹脂の分散体を得る工程１（２）シリコーン系消泡剤の存在下で、有機溶剤を除去する工程２【選択図】なし