EP0154903A1
Expired / Lapsed
EP
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Magnetic coating composition and magnetic recording medium
Assignee: Daikin Industries Ltd
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Filing: 1985-02-28
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Granted: —
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Expires: 2005-02-28
Abstract
Abstract @ A magnetic coating composition comprising acicular particles containing iron carbide and a main magnetic material.
Inventors
- 👤 Yoshiyuki Shibuya
- 👤 Shigeo Daimon
- 👤 Kazuo Okamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:10
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/10; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; G11B5/706; G11B5/70626; G11B5/70642; G11B5/70652; G11B5/70668; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
A magnetic coating composition comprising acicular particles containing iron carbide and a main magnetic material.
Claim 2
Dependent Claim
15 words
A magnetic coating composition comprising acicular particles containing iron carbide and a main magnetic material.
Claim 3
Dependent Claim
24 words
A composition as defined in claim 1 wherein the main magnetic material is magnetic iron oxide, cobalt-modified iron oxide, chrominum dioxide or metallic iron.
Claim 4
Dependent Claim
35 words
A composition as defined in claim 1 or 2 wherein the acicular particles are contained in an amount of about 0.5 to about 20% by weight based on the weight of the main magnetic material.
Claim 5
Dependent Claim
33 words
A composition as defined in claim 3 wherein the acicular particles are contained in an amount of about 1 to about 10% by weight based on the weight of the main magnetic material.
Claim 6
Dependent Claim
22 words
5 . A magnetic recording medium comprising a substrate coated with the magnetic coating composition of any of claims 1 to 4.
References Cited (Backward Citations)
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