C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 69/08 (2006.01) B01F 17/00 (2006.01) C08G 69/10 (2006.01) C08G 73/06 (2006.01) C08G 73/10 (2006.01) C09B 67/46 (2006.01) C09D 17/00 (2006.01) C11D 3/37 (2006.01)
Patent
CA 2150350
Process for the preparation of polymers of aspartic acid by re- acting (a) maleic anhydride and (b) ammonia and/or primary or secondary amines without diluent in the (a) : (b) molar ratio of 1 : 0.1 to 1 : 3 to give monoamides of maleic acid, fumaric acid or their ammonium salts at up to 100°C and subsequent condensation of the reaction products, with or without compounds capable of cocondensation, at above 100°C and, where appropriate, hydrolysis of the condensates and use of the polymers as scale inhibitor, as dispersants for pigments and as additive to detergents and cleaners.
Baur Richard
Hartmann Heinrich
Kroner Matthias
Kud Alexander
Potthoff-Karl Birgit
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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