C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 6/00 (2006.01)
Patent
CA 2311507
The invention relates to a method for producing water-soluble or water- swellable polymerizates with a very low residual monomer content using acrylic acid and/or acrylic acid derivatives which have been partially or completely neutralised with nitrogen compounds. The method is characterised in that the polymerizate is subsequently heated to temperatures of 120 to 240 ~C. The polymerizates produced according to the inventive method are suitable for use as e.g. flocculants, dispersants and absorbers.
L'invention concerne un procédé pour produire des polymères hydrosolubles ou pouvant gonfler dans l'eau, à partir d'acide acrylique ou de dérivés d'acide acrylique neutralisés partiellement ou entièrement avec des composés d'azote, lesdits polymères présentant une très faible teneur en monomères résiduels. Ce procédé est caractérisé par le réchauffement ultérieur du polymère à des températures comprises entre 120 et 240 ·C. Les polymères obtenus selon ce procédé s'utilisent entre autres comme floculants, dispersants et absorbants.
Chmelir Miroslav
Dahmen Kurt
Marks & Clerk
Stockhausen Gmbh & Co. Kg
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