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Title
Verzweigte Polyammoniumverbindungen mit hohem Molekulargewicht und Verfahren zu ihrer Herstellung
Date Issued
2000
Author(s)
Hahn, M.
Jaeger, W.
Cramm, J.
Patent No
1995-19524867
Abstract
Comb-type branched polyammonium salts of formula (I) with high mol. wt., have side chains formed by unsatd. quat. ammonium cpd. (II) and a main chain formed by linear prepolymer (III) contg. amino gps.. USE - (I) are useful in water purificn., e.g. sewage treatment such as dewatering sludge or purification of contaminated water. ADVANTAGE - The mol. wt. of (I) can be controlled by the mol. wt. of (III) and the mol. wt. and no. of pendant gps. by the concn. of grafting points on (III). This allows the properties of (I) in soln. to be tailored over a wide range. There is a drastic rise in intrinsic viscosity during polymerisation. In addn., (I) in which (II) is diallyl-dimethyl-ammonium chloride (DADMAC) are insol. in MeOH.
Language
de
Patenprio
DE 1995-19524867 A: 19950707