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Cyclophosphazene compound, lubricant comprising same, and magnetic disk
US8936859B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8936859-B2 |
| Application number | US-201113641508-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2011 |
| Priority date | Apr 26, 2010 |
| Publication date | Jan 20, 2015 |
| Grant date | Jan 20, 2015 |
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Abstract
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A cyclophosphazene compound of the formula (I), and lubricants and magnetic disks using the compound wherein n is 2, 3 or 4, m is an integer of 1 to 12, R is C 1-4 fluoroalkyl and Rf is —CF 2 O(CF 2 CF 2 O) x (CF 2 O) y CF 2 — or —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 4000 to a fluoropolyether of the formula HOCH 2 —Rf—CH 2 OH including said Rf, the fluoropolyether having a molecular weight distribution (PD) of 1.0 to 1.5.
First claim
Opening claim text (preview).
The invention claimed is: 1. A compound represented by formula (I): wherein n is 2, 3 or 4, m is 2, R is C 1-4 fluoroalkyl and Rf is —CF 2 O(CF 2 CF 2 O) x (CF 2 O) y CF 2 — or —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — in which x, y and z are each 0 or a positive real number to give a number average molecular weight of 500 to 4000 to a fluoropolyether of the formula HOCH 2…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Cross-Sectional Technologies · mapped topic
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- What does patent US8936859B2 cover?
- A cyclophosphazene compound of the formula (I), and lubricants and magnetic disks using the compound wherein n is 2, 3 or 4, m is an integer of 1 to 12, R is C 1-4 fluoroalkyl and Rf is —CF 2 O(CF 2 CF 2 O) x (CF 2 O) y CF 2 — or —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — in which x, y and z are each 0 or a positive real number to give a number average molecular we…
- Who is the assignee on this patent?
- Shimizu Tsuyoshi, Kobayashi Nagayoshi, Moresco Corp
- What technology area does this patent fall under?
- Primary CPC classification C07F9/65815. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 20 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).