C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/254, 400/301
C08G 65/26 (2006.01) C08G 59/50 (2006.01) C08G 65/333 (2006.01) C08G 65/338 (2006.01) C08G 73/00 (2006.01) C08L 71/02 (2006.01)
Patent
CA 1133190
ABSTRACT OF THE DISCLOSURE Water-soluble, crosslinked nitrogen-containing condensation products, the viscosity of which, in aqueous solution, increases with increasing temperature, are obtained by reacting a block copolymer of the formula: Image where R is Image , n being from 0.75 to 3, Image , Image , Image or Image , x is from 50 to 250, y is from 20 to 100, the ratio of x to y is from 6.5 to 1 : 15, with compounds having at least four basic NH groups in a weight ratio of from 0.8 : 1 to 30 : 1. The products are added to aqueous systems, e.g. polymer solutions and polymer dispersions, to improve the viscosity characteristics.
306822
Fikentscher Rolf
Gans Karl
Glaser Klaus
Schaefer Emil
Streit Werner
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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