| abstract |
The present invention relates to biuret compounds of the general formulanin which meannR 1 = C 2 -C 18 -alkylene, cycloalkylene, arylene or aralkylene,nY = -O- and / or -NH-,nR 2 = C 4 -C 22 alkyl, C 3 -C 18 alkenyl, cycloalkyl, aralkyl, C m H 2m + 1 (OC n H 2n) x - (O-CH (C 6 H 5) -CH 2 ) u -, C m H 2m + 1 (OOC-C v H 2v) x -, XC 6 H 4 - (OC n H 2n) x - (O-CH (C 6 H 5) -CH 2) u - .nwhere m = 1-22, n = 2-4, x = 0-15, u = 0-15, v = 4-5,nX = C 1 -C 12 alkyl, - (C 6 H 5) 1-4 andnR 3, R 4 and R 5 = C 2 -C 18 -alkylene, cycloalkylene, arylene or aralkylene, where R 3, R 4 and R 5 may be identical or different,nZ = -COO-, NHCO-, NHCOO-, NHCONH- and / or mixtures thereofnand where a = 1-20. The invention also relates to a process for the preparation of biuret compounds and their use as rheology control agents. The invention further relates to urethane- and / or urea-containing uretdiones, which are valuable intermediates for the preparation of the biuret compounds. |