Hydraulic fluid composition
US-2015376541-A1 · Dec 31, 2015 · US
Lubricating composition
US2016257904A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016257904-A1 |
| Application number | US-201615059695-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 3, 2016 |
| Priority date | Mar 5, 2015 |
| Publication date | Sep 8, 2016 |
| Grant date | — |
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- Title
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Abstract
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The present invention provides the use of a lubricating composition for improving anti-foaming properties, in particular as determined according to ASTM D892, wherein the lubricating composition comprises (i) a base oil comprising Fischer-Tropsch derived base oil and (ii) from 0.0001 to 10 wt % of an anti-foam agent.
First claim
Opening claim text (preview).
I claim: 1 . Use of a lubricating composition for improving anti-foaming properties, in particular as determined according to ASTM D892, wherein the lubricating composition comprises (i) a base oil comprising a Fischer-Tropsch derived base oil and (ii) from 0.0001 to 10 wt % of an anti-foam agent. 2 . Use according to claim 1 wherein the anti-foam agent is selected from silicone anti-foam agents, non-silicone anti-foam agents and mixtures thereof. 3 . Use according to claim 2 wherein the silicone anti-foam agents are selected from silicone oils. 4 . Use according to claim 3 wherein the silicone oils are selected from polyalkylsiloxanes (e.g., polydimethylsiloxane), polyarylsiloxanes, polyalkoxysiloxanes, polyaryloxysiloxanes, fluorinated polysiloxanes (e.g., trifluoropropylmethylsilicone), and mixtures thereof. 5 . Use according to claim 1 , wherein the anti-foam agent comprises silica particulates. 6 . Use according to claim 2 wherein the non-silicone anti-foam agents are selected from polymethacrylates. 7 . Use according to claim 1 wherein the Fischer-Tropsch derived base oil has a kinematic viscosity at 100° C. of from 1 mm 2 /s to 35 mm 2 /s. 8 . Use according to claim 1 wherein the base oil comprises more than 50 wt %, preferably more than 60 wt %, more preferably more than 70 wt %, even more preferably more than 80 wt %, most preferably more than 90 wt % of Fischer-Tropsch derived base oil. 9 . Method for improving anti-foaming properties of a lubricating composition, in particular as determined according to ASTM D892, wherein the method comprises providing a lubricating composition which comprises (i) a base oil comprising a Fischer-Tropsch derived base oil and (ii) 0.0001 to 10 wt % of an anti-foam agent. 10 . A lubricating oil composition comprising (i) a base oil comprising a Fischer-Tropsch derived base oil; and (ii) from 0.0001 to 10 wt % of an anti-foam agent.
Assignees
Inventors
Classifications
Silica · CPC title
Viscosity; Viscosity index · CPC title
Particles related characteristics · CPC title
Siloxanes with specific structure · CPC title
Acrylate; Methacrylate · CPC title
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Frequently asked questions
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- What does patent US2016257904A1 cover?
- The present invention provides the use of a lubricating composition for improving anti-foaming properties, in particular as determined according to ASTM D892, wherein the lubricating composition comprises (i) a base oil comprising Fischer-Tropsch derived base oil and (ii) from 0.0001 to 10 wt % of an anti-foam agent.
- Who is the assignee on this patent?
- Shell Oil Co
- What technology area does this patent fall under?
- Primary CPC classification C10M169/041. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Sep 08 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).