Magnetic recording media

Details Magnetic recording media Magnetic recording media

1988-09-02

1990-02-13

Henderson, Christopher

Stock material or miscellaneous articles

Composite

Of polyester

4284231, 428692, 428694, 428900, B32B 2736

Patent

active

049006312

ABSTRACT:
A copolymer useful for magnetic paints is provided which is composed of (1) at least 60% by weight of vinyl chloride units (2) 0.1 to 4.0% by weight, as a sulfur- or phosphorus-containing strong acid group, of strong acid group-containing monomer units, (3) at least 0.1% by weight, as the hydroxyl groups, of units of a monomer which gives a side chain represented by the formula --X--OH wherein X is an organic group, and (4) 0 to 20% by weight of units of another monomer.

REFERENCES:
patent: 4476035 (1984-10-01), Miyoshi et al.
patent: 4537911 (1985-08-01), Chonde
patent: 4558092 (1985-12-01), Reinecke et al.

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