Magnetic recording medium
AssigneesSony Corporation, Shin-Etsu Chemical Co., Ltd.
InventorsKiyokazu Oiyama, Yoshinobu Ninomiya, Hiroshi Yoshioka, Ichiro Ono
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Abstract
Described is a magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon composed mainly of magnetic powder and a binder, said binder containing a compound represented by a following formula: ##STR1## wherein X represents tertiary amine sulfonate or tertiary amine sulfuric ester, Y represents a monomer having vinyl group which is copolymerizable with vinyl chloride and i, j, k represent polymerization degrees.
Claims8
A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer formed thereon composed mainly of magnetic powder and a binder, said binder containing a compound represented by a following formula:
- ##STR21## wherein X represents tertiary amine sulfonate or tertiary amine sulfuric ester, Y represents a monomer having vinyl group which is copolymerizable with vinyl chloride and i, j, k represent polymerization degrees, i being in the range from 100 to 1000 and k being in the range from 0.1 to 100;
- and x having a polar group equivalent in the range from 1000 to 100,000.
Dependencies are inferred from the claim text.