Binder composition for magnetic recording medium and magnetic recording medium
US8501331B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Sep 28, 2010 |
| Grant date | Aug 6, 2013 |
| Priority date | — |
| Expiry date | Jul 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/714
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A binder composition for a magnetic recording medium contains a vinyl copolymer having a structural unit of general formula [1]:wherein R1 is H, halogen, or methyl, L1 is a single bond or a divalent linking group, and Y is an alicyclic group; a structural unit of general formula [2]:wherein R2 is H, halogen, or methyl, L2 is a single bond or a divalent linking group, and Z is a hydrocarbon group with a carbon number of from 8 to 50; and a structural unit of general formula [3]:wherein R3 is H, halogen, or methyl, and L3 is a single bond or a divalent linking group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.