Compositions – Magnetic – With wax – bitumen – resin – or gum
Patent
1990-09-21
1993-08-31
Willis, Jr., Prince
Compositions
Magnetic
With wax, bitumen, resin, or gum
252 6251, H01F 100, H01F 111
Patent
active
052406261
ABSTRACT:
An aqueous ferrofluid comprises a plurality of colloidally-dispersed magnetite particles and a dispersing aid. The magnetite particles are coated with an anti-agglomeration agent which is a carboxy-functional polymer.
REFERENCES:
patent: 3784471 (1974-01-01), Kaiser
patent: 3795539 (1974-03-01), DiMino
patent: 3916038 (1975-10-01), Yamaguchi
patent: 3951784 (1976-04-01), Kaiser et al.
patent: 3990981 (1976-11-01), Kovac et al.
patent: 4026713 (1977-05-01), Sambucetti
patent: 4107063 (1978-08-01), Kovac et al.
patent: 4161454 (1979-07-01), Lu
patent: 4208294 (1980-06-01), Khalafalla et al.
patent: 4519931 (1985-05-01), Soga et al.
patent: 4687596 (1987-08-01), Barduz
patent: 4824587 (1989-04-01), Kwon
Hawley's Condensed Chemical Dictionary, 11th Ed. pp. 19 and 684, 1987.
Yeh, Ferrofluid Bitter Patterns on Tape, IEEE Trans, on Mag., vol. Mag-16, No. 5, pp. 1650-1652 (Sep. 1980).
Wooding et al., Proteins and Carbohydrates As Alternative Surfactants For The Preparation of Stable Magnetic Fluids, IEEE Trans. on Mag., vol. 24, No. 2, pp. 1650-1652 (Mar. 1988).
Rosenweig, Magnetic Fluids: Phenomena and Process Applications, Chem. Eng. Proc., pp. 53-61 (Apr. 1989).
Rosensweig, Magnetic Fluids: Phenomena and Process Applications, Chem. Eng. Proc., p. 54 (Apr. 1989).
Rosensweig, A Course in Ferrohydrodynamics, p. II-7 (1980).
Cullity, Introduction of Magnetic Materials, pp. 386 and 410-418 (1972).
Morrish, The Physical Principles of Magnetism, pp. 360-363 (1980).
Chandrasekhar et al., Cobalt Ferrite Fluids and Their Application to Magnetic Ink-Jet Printing, J. of Imaging Technology, vol. 13, No. 2, p. 55 (1987).
Elkafrawy et al., IEEE Trans. on Magnetics, vol. 26, No. 5, (Sep. 1990).
Roden John S.
Thakur Ranjit
Diamond Alan D.
Griswold Gary L.
Kagan David B.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
LandOfFree
Aqueous ferrofluid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aqueous ferrofluid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous ferrofluid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2295687