Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1984-11-21
1986-04-15
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
1621646, 1621683, 1621815, 1621813, 210723, 210728, 210734, 210735, 252175, 5253294, 525344, 525363, 525370, 525371, 528395, C02F 510, B01D 2101
Patent
active
045826277
ABSTRACT:
A flocculating agent for use in water purification technology and papermaking technology is described, as well as a process of producing the flocculating agent which is the reaction product of sulphate ion-containing polymeric aluminium hydroxy chloride and one or more cationic polymers preferably selected among polyacrylic amide, polyamide amine and polyethylene imine. The most preferred cationic polymer is polyacrylic amide. The flocculating agent is produced by mixing an aqueous suspension of sulphate ion-containing aluminium polyhydroxy chloride having a solids content of 20-30 parts by weight with 0.3-60 parts by weight of cationic polymer, based upon 100 parts by weight of sulphate ion-containing aluminium polyhydroxy chloride, and by heating the mixture for 2-4 h at a temperature varying from about 80.degree. C. to the boiling point of the mixture.
REFERENCES:
patent: 3235492 (1966-02-01), Andresen et al.
patent: 3629229 (1971-12-01), Schmank
patent: 3897333 (1975-07-01), Field et al.
patent: 4435308 (1984-03-01), Thomas et al.
Lieberman Paul
Wax Robert A.
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