EP0276464A2
Expired / Lapsed
EP
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Process for preparing hydrosoluble copolymers of maleic acid, and their use as water-treating agents
Assignee: BASF SE
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Filing: 1987-12-22
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Granted: —
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Expires: 2007-12-22
Abstract
Abstract A process wherein (a) from 99 to 80 % by weight of maleic anhydride and (b) from 1 to 20 % by weight of a monoethylenically unsaturated monomer which can be copolymerised with maleic anhydride, and, if desired, (c) up to 10 % by weight of a crosslinking agent are copolymerised in an aromatic hydrocarbon at a temperature of from 60 to 200 DEG C in the presence of a peroxy ester derived from a saturated or monoethylenically unsaturated carboxylic acid, and the anhydride groups of the copolymer are subsequently hydrolysed. <??>The copolymers prepared in this way are used as water-treatment agents.
Inventors
- 👤 Walter Denzinger
- 👤 Heinrich Dr. Hartmann
- 👤 Ulrich Dr. Goeckel
- 👤 Felix Dr. Richter
- 👤 Hans-Juergen Raubenheimer
- 👤 Ekhard Dr. Winkler
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 19:37
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C02F5/12; C02F5/14; C08; C08F; C08F222/00; C08F222/04; C08F222/06
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