High molecular weight flocculant

Details High molecular weight flocculant High molecular weight flocculant

2006-05-02

2006-05-02

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...

C525S329200, C525S329300, C525S344000

Reexamination Certificate

active

07037981

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 with commercial flocculants into the water for processing various.

REFERENCES:
patent: 2579451 (1951-12-01), Polson
patent: 2721113 (1955-10-01), Downing et al.
patent: 3345344 (1967-10-01), Fetscher et al.
patent: 3864312 (1975-02-01), Suzuki et al.
patent: 3864323 (1975-02-01), Stoy
patent: 3948870 (1976-04-01), Stoy et al.
patent: 4107121 (1978-08-01), Stoy
patent: 4526935 (1985-07-01), Wilkinson
patent: 3432569 (1986-02-01), None
patent: 42 39 128 (1994-05-01), None
patent: 0 067 362 (1982-06-01), None
patent: 0 105 201 (1984-04-01), None
patent: 0 135 727 (1984-08-01), None
patent: 0 528 409 (1992-08-01), None
patent: 0 528 409 (1993-02-01), None
patent: 0 716 882 (1996-06-01), None
patent: 2 308 663 (1976-11-01), None
patent: WO 91/18026 (1991-11-01), None
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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