Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Separator – retainer – spacer or materials for use therewith
Patent
1995-05-26
1998-11-03
Maples, John S.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Separator, retainer, spacer or materials for use therewith
429222, 429223, 442170, 442171, H01M 216
Patent
active
058306048
ABSTRACT:
A polymeric sheet, which is particularly suited for use as a separator in an electrochemical device, is formed by graft copolymerizing acrylic acid, or another vinyl monomer capable of reacting with an acid or a base to form a salt directly or indirectly with fibers of a non-woven sheet, whose outer surface is provided by a polyolefin, especially polypropylene. The polyolefin is crosslinked as a result of the polymerization reaction. The polymerization reaction is preferably initiated by exposure of the sheet to ultraviolet radiation, after impregnation with an appropriate solution of the vinyl monomer.
REFERENCES:
patent: 3341366 (1967-09-01), Hodgdon, Jr. et al.
patent: 3615865 (1971-10-01), Wetherell
patent: 4122133 (1978-10-01), Bernstein et al.
patent: 4287275 (1981-09-01), Davis
patent: 4339473 (1982-07-01), D'Agostino et al.
patent: 4346142 (1982-08-01), Lazear
patent: 5024767 (1991-06-01), Kubo et al.
patent: 5089360 (1992-02-01), Kanno et al.
Zhang Pei Yao and Bengt Ranby, "Surface Modification by Continuous Graft Copolymerization. IV. Photoinitiated Graft Copolymerization onto Polypropylene Fiber Surface," Journal of Applied Polymer Science, vol. 41, 1469-1478 (1990). (No month).
B. Ranby, Z. M. Gao, A. Hult, and P.Y. Zhang, "Modification of Polymer Surfaces by Photoinduced Graft Copolymerization," American Chemical Society (1988), pp. 168-185. (No month).
Akira Kitas, Seiji Yoshida and Shiro Tanso, "Characteristics of Large Sealed Ni-Cd Batteries with Grafted Nonwoven Fabrics Separator," pp. 413-419. (No month).
Cook John Anthony
Gargan Kenneth
Singleton Raymond William
Maples John S.
Scimat Limited
LandOfFree
Polymeric sheet and electrochemical device using the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polymeric sheet and electrochemical device using the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polymeric sheet and electrochemical device using the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-687576