Process for the preparation of retention and dewatering agents b

Details Process for the preparation of retention and dewatering agents b Process for the preparation of retention and dewatering agents b

1997-05-29

1999-03-23

Clardy, S. Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 68, 528229, C08G 6348, C08G 1200

Patent

active

058860959

ABSTRACT:
The present invention relates to a process for the preparation of branched and/or crosslinked polyamino-ethers in which polyamino-ethers, which are prepared from glycol dichlorohydrins or polyglycol dichlorohydrins and diamines and still contain free chlorohydrin groups, are crosslinked in an essentially aqueous solution under alkaline conditions under the influence of heat.

REFERENCES:
patent: 3753931 (1973-08-01), Raspanti et al.
patent: 4267059 (1981-05-01), Behn et al.
patent: 5371119 (1994-12-01), Bohlander et al.
Chemical Abstracts No. 94: 49088q for DE 2,916,356, (Nov. 13, 1980).
Translation of the main content of German Offenlegungsschrift No. 2162567 which was filed by Sandoz AG on Dec. 16, 1971, and was published on Jul. 20, 1972: Process for the production of cationic, water-soluble, thernosetting, highly branched resins, pp. 1-10.

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