Method for producing a high-molecular weight flocculant

Details Method for producing a high-molecular weight flocculant Method for producing a high-molecular weight flocculant

2005-08-16

2005-08-16

Lipman, Bernard (Department: 1713)

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

Synthetic resins

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

C525S329100, C525S329200, C525S329300

Reexamination Certificate

active

06930154

ABSTRACT:
A high-molecular flocculant rendered water-soluble by conversion of cyano groups contained in a high-molecular material, a method for producing the flocculant, and a method for efficiently processing water using the flocculant. A high-molecular material containing acrylonitrile as a monomer is processed safely to impart hydrophilicity to the material and the resulting product is used for water processing to contribute to environmental conservation. An amino compound is added to a cyano group containing high-molecular material to convert at least a portion of the cyano group (—C≡N) into a molecular structure portion having an imidamino structure and, if necessary, to convert at, least the portion into one of an acid salt, a quaternary ammonium salt or a hydrolyzate structure portion to give a high-molecular flocculant. Alternatively, a high-molecular material having cyano groups is hydrolysed to convert the cyano group into carbamoyl groups, carboxylic groups or their salts to give a high-molecular flocculant. This high-molecular flocculant is charged alone or in combination the water for processing various.

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Chemical Abstracts, vol. 100, No. 8, Feb. 1984, Columbus, Ohio, US; Abstract No. 52243j, XP-002071630, JP-5896604 A (Sanyo Chemical).

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