LUBRICANT COMPOSITION AND LUBRICANT DEFOAMING METHOD

PROBLEM TO BE SOLVED: To provide a lubricant composition which can suppress decrease in defoaming performance even in long-term storage, and can maintain lubricant defoaming performance for the long term even in a lubrication environment where high centrifugal force acts on lubricant.SOLUTION: A lub...

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Bibliographic Details
Main Authors TATSUMI GO, TAKAGI AKIRA
Format Patent
LanguageEnglish
Japanese
Published 23.02.2017
Subjects
CHEMISTRY
FUELS
LUBRICANTS
LUBRICATING COMPOSITIONS
METALLURGY
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
TECHNICAL GASES CONTAINING CARBON MONOXIDE
USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION
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Summary:PROBLEM TO BE SOLVED: To provide a lubricant composition which can suppress decrease in defoaming performance even in long-term storage, and can maintain lubricant defoaming performance for the long term even in a lubrication environment where high centrifugal force acts on lubricant.SOLUTION: A lubricant composition comprises: lubricant base oil; (A) a first antifoaming agent obtained by, in (a) polymerization solvent, solution-polymerizing (b) one or more antifoaming agent monomer, in coexistence with (c) polymer soluble in the polymerization solvent; and (B) a second antifoaming agent that is a silicone-based antifoaming agent.SELECTED DRAWING: None 【課題】長期間の貯蔵においても消泡性能の低下を抑制すること、及び、潤滑油に対して高い遠心作用が働く潤滑環境下においても、潤滑油の消泡性能を長期間にわたって維持することが可能な、潤滑油組成物を提供する。【解決手段】潤滑油基油と；（Ａ）（ａ）重合溶媒中、（ｂ）一種以上の消泡剤モノマーを、（ｃ）重合溶媒に可溶なポリマーの共存下で溶液重合することにより得られる、第１の消泡剤と；（Ｂ）シリコーン系消泡剤である、第２の消泡剤とを含有する、潤滑油組成物。【選択図】なし
Bibliography:Application Number: JP20160159030