EP 1315688 A2 20030604 - METHOD OF IMPROVING THE CRUSHING STRENGTH AND THE IMPACT RESISTANCE OF UREA, AND UREA COMPOSITION
Title (en)
METHOD OF IMPROVING THE CRUSHING STRENGTH AND THE IMPACT RESISTANCE OF UREA, AND UREA COMPOSITION
Title (de)
VERFAHREN ZUR VERBESSERUNG DER DRUCKFESTIGKEIT UND DER SCHLAGFESTIGKEIT VON HARNSTOFF, UND HARNSTOFFZUSAMMENSETZUNG
Title (fr)
PROCEDE D'AMELIORATION DE LA RESISTANCE A LA COMPRESSION ET DE LA RESISTANCE AU CHOC DE L'UREE, ET COMPOSITION D'UREE
Publication
Application
Priority
- NL 0100663 W 20010907
- NL 1016123 A 20000907
Abstract (en)
[origin: WO0220471A2] The invention relates to a method of improving the crushing strength and impact resistance of urea granules by the addition of an additive comprising a polyvinyl compound of the general formula (CHX-CHY)n, where n = 4-10 000, and X and Y independently of one another are selected from the group consisting of a hydrogen atom, a hydroxyl radical, carboxylic acid radical, amine radical or amide radical. This method is characterized in that it starts with a urea melt.
IPC 1-7
IPC 8 full level
C05C 9/00 (2006.01); C07C 273/14 (2006.01)
CPC (source: EP)
C05C 9/005 (2013.01); C07C 273/14 (2013.01)
Citation (search report)
See references of WO 0220471A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0220471 A2 20020314; WO 0220471 A3 20020808; AU 9439201 A 20020322; EP 1315688 A2 20030604
DOCDB simple family (application)
NL 0100663 W 20010907; AU 9439201 A 20010907; EP 01975023 A 20010907