IP Library › Granted Patent US 9,911,447
Granted Patent B2
US 9,911,447 · App. 14/764,600 · Granted Mar 6, 2018

Fluoropolyether compound, and lubricant and magnetic disc comprising same

Inventor: Ryosuke Sagata (Hyogo, JP)
Assignee: MORESCO CORPORATION
G11B5/725C07C43/23C08G65/34C10M105/54C10M107/38C10M2211/0425C10M2213/0606C10N2230/10C10N2230/74C10N2240/204C10N2250/121
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Quick Facts
Patent No.
US 9,911,447
App. No.
14/764,600
Granted
Mar 6, 2018
Kind
B2
Abstract

A compound of the formula (1), lubricant containing the compound and magnetic disk R 1 —C 6 H 4 O—CH 2 CH(OH)CH 2 OCH 2 —R 2 —CH 2 —O—CH 2 CH(OH)CH 2 —OC 6 H 4 —R 1   (1) wherein R 1 is alkoxyl having 1 to 4 carbon atoms, amino or amido, R 2 is —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — or —CF 2 CF 2 CF 2 O(CF 2 CF 2 CF 2 CF 2 O) n CF 2 CF 2 CF 2 —, z is a real number of 1 to 15, n is a real number of 0 to 4.

Claims (14)

1. A compound of the formula (1)

R 1 —C 6 H 4 O—CH 2 CH(OH)CH 2 OCH 2 —R 2 —CH 2 —O—CH 2 CH(OH)CH 2 —OC 6 H 4 —R 1   (1)

wherein R 1 is alkoxyl having 1 to 4 carbon atoms, amino or amido, R 2 is —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — or —CF 2 CF 2 CF 2 O(CF 2 CF 2 CF 2 CF 2 O) n CF 2 CF 2 CF 2 —, z is a real number of 1 to 15, n is a real number of 0 to 4.

2. A compound as defined in claim 1 wherein z is a real number of 1 to 10.

3. A compound as defined in claim 1 wherein R 2 is —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 —, z is a real number of 1 to 15.

4. A compound as defined in claim 1 wherein R 2 is —CF 2 CF 2 CF 2 O(CF 2 CF 2 CF 2 CF 2 O) n CF 2 CF 2 CF 2 —, n is a real number of 0 to 4.

5. A lubricant containing a compound of the formula (1)

R 1 —C 6 H 4 O—CH 2 CH(OH)CH 2 OCH 2 —R 2 —CH 2 —O—CH 2 CH(OH)CH 2 —OC 6 H 4 —R 1   (1)

wherein R 1 is alkoxyl having 1 to 4 carbon atoms, amino or amido, R 2 is —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — or —CF 2 CF 2 CF 2 O(CF 2 CF 2 CF 2 CF 2 O) n CF 2 CF 2 CF 2 —, z is a real number of 1 to 15, n is a real number of 0 to 4.

6. A lubricant as defined in claim 5 wherein z is a real number of 1 to 10.

7. A magnetic disk comprising at least a recording layer and a protective layer formed over a substrate, and a lubricating layer formed over the resulting surface, the lubricating layer containing a compound of the formula (1)

R 1 —C 6 H 4 O—CH 2 CH(OH)CH 2 OCH 2 —R 2 —CH 2 —O—CH 2 CH(OH)CH 2 —OC 6 H 4 —R 1   (1)

wherein R 1 is alkoxyl having 1 to 4 carbon atoms, amino or amido, R 2 is —CF 2 CF 2 O(CF 2 CF 2 CF 2 O) z CF 2 CF 2 — or —CF 2 CF 2 CF 2 O(CF 2 CF 2 CF 2 CF 2 O) n CF 2 CF 2 CF 2 —, z is a real number of 1 to 15, n is a real number of 0 to 4.

8. A magnetic disk as defined in claim 7 wherein z is a real number of 1 to 10.

Assignments (2)
RELEASE OF SECURITY INTEREST Recorded Jul 31, 2018
From: SILICON VALLEY BANK
To: ACLIMA, INC.
Reel/Frame 046514/0494 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 21, 2015
From: SAGATA, RYOSUKE
To: MORESCO CORPORATION
Reel/Frame 036390/0271 →
Priority Claims (1)
JP 2013-254202 · Dec 9, 2013 · national
Continuity (1)
Related Publication 20150371672A1 · Dec 24, 2015