19-08-2021 дата публикации
Номер: US20210253968A1
The invention provides a fullerene compound; a lubricant that is for a magnetic recording medium and that contains the fullerene compound; and a magnetic recording medium. The fullerene compound is an ionic liquid that is represented by general formula (1) and is formed from a Bronsted acid (HX) and a Bronsted base ([RR)N—]—R); wherein one of the Brønsted acid and the Broønsted base contains a group having a fullerene; and the other contains a perfluoroalkyl chain. 2. The fullerene compound according to claim 1 , a fullerene skeleton, and', 'a sulfonic acid group or a carboxylic acid group; and, 'wherein the Bronsted acid, in a molecule, comprises'}the Bronsted base comprises a perfluoropolyether chain.3. The fullerene compound according to claim 1 , wherein the Bronsted acid claim 1 , in a molecule claim 1 , comprisesa perfluoropolyether chain, anda sulfonic acid group or a carboxylic acid group; andthe Bronsted base comprises a fullerene skeleton.4. The fullerene compound according to claim 1 , wherein the Bronsted acid is a compound represented by formula (6) claim 1 , (7) claim 1 , or (8); the Bronsted base is a compound represented by formula (10) or (11) claim 1 , C(OH)(OSOH)(6){'sub': 'n', 'wherein Crepresents a fullerene which is a base structure of polyhydroxylated fullerene hydrogen sulfate ester;'}x is a number in the range of 10 to 30;y is a number in the range of 5 to 10; and{'sub': n', '60', '70', '76', '78', '80', '82', '84, 'claim-text': [{'chemistry': {'@id': 'CHEM-US-00031', '@num': '00031', 'img': {'@id': 'EMI-C00031', '@he': '120.23mm', '@wi': '69.85mm', '@file': 'US20210253968A1-20210819-C00031.TIF', '@alt': 'embedded image', '@img-content': 'chem', '@img-format': 'tif'}}}, {'br': None, 'sub': 2', '2', '2', 'p', '2', '2', '2', '2', 'm', '2', 'n', '2', '2', '2', '2', 'q', '2, 'NH(CHCHO)CHCF—(OCFCF)(OCF)—OCFCH(OCHCH)NH\u2003\u2003(10)'}], 'Cis at least one kind selected from C, C, C, C, C, C, and C.'} {'br': None, 'sub': 3', '2', '2', '2', '2', '2 ...
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