DEFOAMING AGENT AND LUBRICATING OIL COMPOSITION

A defoaming agent including a polymer, the polymer including: a repeating unit represented by the following general formula (1); and a repeating unit represented by the following general formula (3):wherein in the general formula (1), X1 is a repeating unit obtainable by polymerization of a first et...

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Bibliographische Detailangaben
Hauptverfasser:	Takagi, Akira, Tatsumi, Go, Matsuki, Shingo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FUELS INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS LUBRICANTS LUBRICATING COMPOSITIONS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Beschreibung
Zusammenfassung:	A defoaming agent including a polymer, the polymer including: a repeating unit represented by the following general formula (1); and a repeating unit represented by the following general formula (3):wherein in the general formula (1), X1 is a repeating unit obtainable by polymerization of a first ethylenic unsaturated group; Y1 is a side chain including a linear or branched polysiloxane structure, the polysiloxane structure having a polymerization degree of 5 to 300; and Z1 is a linking group linking the repeating unit X1 and the side chain Y1;wherein in the general formula (3), X2 is a repeating unit obtainable by polymerization of a second ethylenic unsaturated group, Y2 is a C1-30 hydrocarbyl side chain; and Z2 is a linking group linking the repeating unit X2 and the side chain Y2.