Magnetic recording medium having a back coat layer containing a

Details Magnetic recording medium having a back coat layer containing a Magnetic recording medium having a back coat layer containing a

Filed on

1987-02-02

Date issued

1988-05-03

Examiner

Robinson, Ellis P.

Patent Class

Stock material or miscellaneous articles

SubClass

Web or sheet containing structurally defined element or...

SubSubClass

Physical dimension specified

Other Related Categories

427128, 427131, 4284259, 428694, 428695, 428900, 428447, 428480, G11B 570

Type

Patent

Status

active

Patent number

047419601

Description

ABSTRACT:
A magnetic recording medium comprising a back coat layer formed on a non-magnetic support on one side which is opposite to a side where a magnetic recording layer is formed. The back coat layer is made of a dispersion of a fluorine-modified organosiloxane in a binder resin. The organosiloxane is of the following formula ##STR1## in which R.sub.1 represents a saturated or unsaturated monohydrocarbon group having from 7 to 21 carbon atoms, R.sub.2 represents a saturated monohydrocarbon group having from 1 to 4 carbon atoms, k is an integer of from 1 to 12, l is an integer of from 2 to 6, m is an integer of 1 or 2, n is an integer of 1 or 2 provided that m+n.ltoreq.3.

REFERENCES:
patent: 4007313 (1977-02-01), Higuchi
patent: 4007314 (1977-02-01), Higuchi
patent: 4110503 (1978-08-01), Ogawa
patent: 4171406 (1979-10-01), Yamaguchi
patent: 4349608 (1982-09-01), Shimizu
patent: 4431703 (1984-02-01), Somezawa
patent: 4469750 (1984-09-01), Fujiki
patent: 4469751 (1984-09-01), Kobayashi
patent: 4501800 (1985-02-01), Fujiki
patent: 4501801 (1985-02-01), Kimura
patent: 4529659 (1985-07-01), Hoshino et al.

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