Compositions – Magnetic – With wax – bitumen – resin – or gum
Patent
1990-08-23
1992-08-04
Willis, Jr., Prince
Compositions
Magnetic
With wax, bitumen, resin, or gum
252500, 528481, C08F 850
Patent
active
051356732
ABSTRACT:
An organic ferromagnetic substance and a process for producing same are disclosed, which substance is a product of the carbonization of at least one polymer in mid course of graphitization selected from (a) an aromatic polymer having a structure such that the aromatic compounds are connected via alkylene chains which may be substituted by an alkyl or aryl group, (b) a polymer of a triarymethane, (c) a polymer of an acetylene compound and (d) a polymer of an .alpha., .beta.-unsaturated compound, characterized in that the ferromagnetic substance contains 1-10 hydrogen atoms per 100 carbon atoms. This organic ferromagnetic substance can be produced in a high yield from commercially available polymers in a simple manner and possesses excellent stability to heat, chemicals and weathering action. Accordingly, this substance can be used in various industrial fields.
REFERENCES:
patent: 4626588 (1986-12-01), Murase
patent: 4954607 (1990-09-01), Otani
patent: 5015699 (1991-05-01), Cotts
Masuda Takashi
Matsuda Akio
Murata Kazuhisa
Director General of Agency of Industrial Science and Technology
Steinberg Thomas
Willis Jr. Prince
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