Plastic and nonmetallic article shaping or treating: processes – Forming electrical articles by shaping electroconductive...
Patent
1980-04-30
1981-06-09
Levin, Stanford M.
Plastic and nonmetallic article shaping or treating: processes
Forming electrical articles by shaping electroconductive...
260 174UC, 429 27, 429 28, 429139, 429249, 429253, 525 56, 525 61, B29C 2500, C08J 324, H01M 216, H01M 218
Patent
active
042724708
ABSTRACT:
A film-forming polyvinyl alcohol polymer is mixed with a polyaldehyde-polysaccharide cross-linking agent having at least two monosaccharide units and a plurality of aldehyde groups per molecule, preferably an average of at least one aldehyde group per monosaccharide units. The cross-linking agent, such as a polydialdehyde starch, is used in an amount of about 2.5 to 20% of the theoretical amount required to cross-link all of the available hydroxyl groups of the polyvinyl alcohol polymer. Reaction between the polymer and cross-linking agent is effected in aqueous acidic solution to produce the cross-linked polymer. The polymer product has low electrical resistivity and other properties rendering it suitable for making separators for alkaline batteries. In that event, the mixture of polymer and cross-linking agent is formed into a sheet or film or the like and the film is cut to size and otherwise fabricated into a configuration suitable for a particular end use. The cross-linking reaction is then carried out to produce the final product.
REFERENCES:
patent: 3034999 (1962-05-01), Wilson
patent: 4086405 (1978-04-01), Gadessaud
Hsu Li-Chen
Philipp Warren H.
Sheibley Dean W.
Levin Stanford M.
Mackin J. A.
Manning J. R.
Musial N. T.
The United States of America as represented by the Administrator
LandOfFree
Cross-linked polyvinyl alcohol and method of making 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 Cross-linked polyvinyl alcohol and method of making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cross-linked polyvinyl alcohol and method of making same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1263518