Surface-modified fibrous material as a filtration medium

Details Surface-modified fibrous material as a filtration medium Surface-modified fibrous material as a filtration medium

1995-06-30

1997-04-08

Edwards, Newton

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

428375, 428221, 210639, 210507, 210509, 210679, 210777, 210505, 2105021, 442164, D02G 300

Patent

active

056186223

ABSTRACT:
A surface-modified fibrous material which includes hydrocarbon polymer fibers having cationic or anionic groups on the surfaces thereof and coated with a polyelectrolyte having a net charge opposite to that of the cationic or anionic groups on the surfaces of the fibers. The hydrocarbon polymer may be, by way of illustration, a polyolefin, such as polyethylene or polypropylene. The cationic or anionic groups may be carboxylic acid, sulfonic acid groups, or quaternary ammonium groups. Examples of polyelectrolytes include chitosan, poly(methacryloxyethyltrimethylammonium bromide), poly(acrylic acid), and poly(styrene sulfonate). Also disclosed is a method of making the surface-modified fibrous material. The surface-modified fibrous material may be used as a filtration medium for liquids.

REFERENCES:
patent: 3016599 (1962-01-01), Perry, Jr.
patent: 3322488 (1967-05-01), Feeman
patent: 3341394 (1967-09-01), Kinney
patent: 3455853 (1969-07-01), Dekking
patent: 3518040 (1970-06-01), Caldwell et al.
patent: 3649346 (1972-03-01), Bridgeford et al.
patent: 3655862 (1972-04-01), Dorschner et al.
patent: 3692618 (1972-09-01), Dorschner et al.
patent: 3704198 (1972-11-01), Prentice
patent: 3705068 (1972-12-01), Dobo et al.
patent: 3737045 (1973-06-01), Hashimoto et al.
patent: 3755527 (1973-08-01), Keller et al.
patent: 3802817 (1974-04-01), Matsuki et al.
patent: 3849241 (1974-11-01), Butin et al.
patent: 3853651 (1974-12-01), Porte
patent: 3978185 (1976-08-01), Buntin et al.
patent: 4018678 (1977-04-01), Peniston
patent: 4064605 (1977-12-01), Akiyama et al.
patent: 4091140 (1978-05-01), Harmon
patent: 4100319 (1978-07-01), Schwartz
patent: 4100324 (1978-07-01), Anderson et al.
patent: 4118531 (1978-10-01), Hauser
patent: 4170696 (1979-10-01), Hirohara et al.
patent: 4225312 (1980-09-01), Lewis et al.
patent: 4238334 (1980-12-01), Halbfoster
patent: 4265927 (1981-05-01), Ericksson et al.
patent: 4331541 (1982-05-01), Akiyama et al.
patent: 4340563 (1982-07-01), Appel et al.
patent: 4351909 (1982-09-01), Stevens
patent: 4364393 (1982-12-01), Yasnitsky et al.
patent: 4405297 (1983-09-01), Appel et al.
patent: 4434204 (1984-02-01), Hartman et al.
patent: 4501835 (1985-02-01), Berke
patent: 4627811 (1986-12-01), Greiser et al.
patent: 4644045 (1987-02-01), Fowells
patent: 4663220 (1987-05-01), Wisneski et al.
patent: 4666452 (1987-05-01), Nohr et al.
patent: 4875901 (1989-10-01), Payet et al.
patent: 4923914 (1990-05-01), Nohr et al.
patent: 5006255 (1991-04-01), Uragami
patent: 5009667 (1991-04-01), Beck et al.
patent: 5032281 (1991-07-01), Nagamatsu
patent: 5039421 (1991-08-01), Linder et al.
patent: 5208111 (1993-05-01), Decher et al.
patent: 5268004 (1993-12-01), Greak
patent: 5279614 (1994-01-01), Uchida et al.
patent: 5407581 (1995-04-01), Onodera et al.
V.A. Wente, "Manufacture of Superfine Organic Fibers", Navy Research Lab., Washington, D.C. NRL Rpt. 4364 (111437), May 25, 1954, U.S. Dept. of Commerce, Office of Technical Services.
R.R. Butin, et al., "Melt Blowing--A One Step Web Process for New Nonwoven products", Journal of the Tech. Assoc. of The Pulp and Paper Industry, V. 56, N.4, pp. 74-77, 1973.
V.A. Wente, "Superfine Thermoplastic Fibers", Industrial & Engin. Chem., V. 48, N. 8, pp. 1342-1346, 1956.
A.W. Adamson, "Physical Chemistry of Surfaces", 5th Ed., John Wiley & Sons, Inc. (1990), p. 389.
K. Allmer, et al. "Surface Modification of Polymers I. Vapour Phase Photografting with Acrylic Acid", Journal of Polymer Science, Part A. Polymer Chemistry, V. 26. pp. 2099-2111 (1988).
G. Gillberg, et al., "A Microscopic Method To Assess The Spin Finish Distribution On Polyester Yarns", Journal of Microscopy, V. 138, Pt. 1, Apr. 1985, RP1-RP2.
J.M. Lane, et al., "Surface Treatmens Of polyolefins", Progress in Organic Coatings, 21, (1993) pp. 269-284.
S. Fang Yue-E, et al. "Kinetics of Radiation-Induced Graft Copolymerization of 2-Hydroxyethyl Methacrylate onto Polyethylene Membranes", Journ. of Appl. Polym Sci., V. 38, pp. 821-828 (1989).
W.L.K. Schwoyer, Editor, "Polyelectrolytes for Water and Waste-water Treatment," CRC Press, Boca Raton, 1981.

Affiliated with

Also associated with

Rating

Surface-modified fibrous material as a filtration medium does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface-modified fibrous material as a filtration medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface-modified fibrous material as a filtration medium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2396813