Rigid magnetic recording media

Details Rigid magnetic recording media Rigid magnetic recording media

1985-02-11

1986-06-24

Robinson, Ellis P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

360135, 252 6254, 427128, 4283155, 4283179, 4284259, 428447, 428694, 428695, 428900, 428480, 428524, G11B 570

Patent

active

045967393

ABSTRACT:
A rigid magnetic storage media coating composition using a high concentration of magnetic particles includes a dual thermoset binder system. The two polymers forming the dual binder system cure during mutually exclusive temperature ranges to form polymer networks that are interpenetrated and entangled. The thermoset polyurethane-melamine/polyester polymer binder system possesses improved properties including the ability to retain liquid fluorinated polyether lubricant without spin-off. The addition of a small amount of silicone wax to the uncured coating composition enhances composition rheology during spin coating on a rigid substrate.

REFERENCES:
patent: 4368237 (1983-01-01), Yamada
patent: 4397751 (1983-08-01), Dichstein
patent: 4405684 (1983-09-01), Blumentritt
patent: 4410440 (1983-10-01), Ko
patent: 4536451 (1985-08-01), Shen
patent: 4546035 (1985-10-01), Ko

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