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Verzweigte, wasserloesliche Acrylamid-Copolymere mit hohem Molekulargewicht und Verfahren zu ihrer Herstellung

Water-soluble comb-type branched cationic acrylamide copolymers - have side chains formed by acrylamide grafted on main chain of linear cationic prepolymer contg. amino gps., useful in water purificn. and paper mfr..
 
: Hahn, M.; Jaeger, W.; Cramm, J.; Whipple, W.

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Frontpage ()

DE 1995-19524869 A: 19950707
DE 1995-19524869 A: 19950707
DE 19524869 C2: 20000504
C08F0271
Deutsch
Patent, Elektronische Publikation
Fraunhofer IAP ()

Abstract
A water-soluble comb-type branched cationic acrylamide copolymers of formula (I) with high mol. wt., which have side chains formed by acrylamide (II) and a main chain formed by linear prepolymer (III) contg. amino gps., are new; and are prepd. by an inverse emulsion polymerisation process. USE - (I) are useful in water purificn. as flocculant for purifying industrial liquors, as sludge conditioner for municipal sewage or as dewatering agent and retention aid in paper mfr. ADVANTAGES - 100% polymerisation of both monomers is attained. The water-in-oil emulsions obtd. have low vol. viscosity and are very stable.

: http://publica.fraunhofer.de/dokumente/PX-40029.html