ES437358A3 - Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)
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BASF SE
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BASF SE
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Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications
(AREA)
Abstract
Process for purifying the wastewater formed in the preparation of polystyrenes in styrene beads, in the presence of polymers of vinylpyrrolidone as a suspension stabilizer, characterized in that, at 100 parts of the wastewater, 0.05 to 5.0 are added. Parts, more especially from 0.1 to 3.0 parts, of macromolecular compounds soluble or dispersible in water containing at least 10% by weight of acrylic acid in polymerized state or its alkali or ammonium salts and the ph is regulated to a value less than 3 by the addition of mineral acids. (Machine-translation by Google Translate, not legally binding)
ES437358A1975-04-301975-04-30Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)
ExpiredES437358A3
(en)
Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)
Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)
Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)
PROCESS FOR THE ELIMINATION OF AQUEOUS ACID RESIDUES CONTAINING FERROUS IONS, BY FORMATION OF POLYCRYSTALLINE PARTICLES OF IRON COMPOUNDS, AND NEW PRODUCTS THUS OBTAINED
Procedure for purifying the wastewater formed in the obtaining of styrene pearl polymers. (Machine-translation by Google Translate, not legally binding)