DEFOAMING AGENT COMPOSITION

To provide a silicone-based defoaming agent having excellent defoaming property and finish appearance when being obliquely viewed.SOLUTION: A defoaming agent composition includes polyoxyalkylene modified silicone A, a nonionic surfactant except the compound A and a silicone oil having a viscosity of...

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Bibliographische Detailangaben
Hauptverfasser:	HARA YUSUKE, FUJII MOTOTAKA, MURAOKA TOSHIHIDE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide a silicone-based defoaming agent having excellent defoaming property and finish appearance when being obliquely viewed.SOLUTION: A defoaming agent composition includes polyoxyalkylene modified silicone A, a nonionic surfactant except the compound A and a silicone oil having a viscosity of 10-100,000 mm2/s at 25°C. The compound A consists of a reactant of a silicone modifier X having formula (1) and hydrogen organopolysiloxane having a specific formula. MH and ML calculated from a chromatogram obtained by the gel permeation chromatography measurement of the silicone modifier X having the formula (1) are satisfied with formula (2). R1O-(AO1)a-[(AO2)b/(EO)c]-R2...(1) 0.20≤ML/MH≤0.60...(2)SELECTED DRAWING: Figure 1 【課題】優れた消泡性および斜めから見た際の仕上がり外観が良好であるシリコーン系消泡剤の提供。【解決手段】消泡剤組成物は、ポリオキシアルキレン変性シリコーンＡ、化合物Ａ以外の非イオン界面活性剤、および２５℃における粘度が１０〜１００，０００ｍｍ２／ｓのシリコーンオイルを含有し、化合物Ａは式（１）のシリコーン変性剤Ｘと特定の式のハイドロジェンオルガノポリシロキサンの反応物からなり、式（１）のシリコーン変性剤Ｘのゲル浸透クロマトグラフィー測定により求められるクロマトグラムから算出されるＭＨとＭＬとが式（２）の関係を満足する、ポリオキシアルキレン変性シリコーンであることを特徴とする消泡剤組成物。Ｒ１Ｏ−（ＡＯ１）ａ−［（ＡＯ２）ｂ／（ＥＯ）ｃ］−Ｒ２・・・（１）０．２０≦ＭＬ／ＭＨ≦０．６０・・・（２）【選択図】図１