Lubricating oil composition for refrigerating machines
US-9644168-B2 · May 9, 2017 · US
Mineral oils containing phenolic antioxidants with improved color stability
US8933004B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8933004-B2 |
| Application number | US-201213978558-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 6, 2012 |
| Priority date | Jan 10, 2011 |
| Publication date | Jan 13, 2015 |
| Grant date | Jan 13, 2015 |
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Abstract
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This invention relates to a mineral oil containing hindered phenolic antioxidants with improved color stability. More particularly, it relates to non-coloring hindered phenolic blend that contains an oxygen scavenger, i.e., dibenzylhydroxyl amine (DBHA) as well as mineral oils containing such a blend.
First claim
Opening claim text (preview).
The invention claimed is: 1. An antioxidant concentrate composition, suitable to prevent oxidation of a mineral oil, comprising: (i) about 0.1 to about 5 wt % of dibenzylhydroxylamine, about 0.1 to about 99.9 wt % of ortho-tert-butylphenol, and 0 to about 99.8 wt % of 2,6-di-tert-butylphenol, all wt % based on the total weight of the antioxidant concentrate composition, or (ii) about 5 to about 20 wt % of dibenzylhydroxylamine and about 80 to about 95 wt % of ortho-tert-butylphe…
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Chemistry & Metallurgy · mapped topic
- C10M133/36Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C10L1/23Primary
Chemistry & Metallurgy · mapped topic
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Frequently asked questions
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- What does patent US8933004B2 cover?
- This invention relates to a mineral oil containing hindered phenolic antioxidants with improved color stability. More particularly, it relates to non-coloring hindered phenolic blend that contains an oxygen scavenger, i.e., dibenzylhydroxyl amine (DBHA) as well as mineral oils containing such a blend.
- Who is the assignee on this patent?
- Liu Bo, Gatto Vince J, Zhao Gangkai, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C10M133/36. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 13 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).